Male sperm ovum interactions. Medical search. Frequent questions

In 1784, Spallanzani established the need of interaction between the female's ovum and male's sperm to form a zygote in frogs. (wikipedia.org)
The conception process takes place when a sperm cell from the male unites with an ovum (egg) in the female's fallopian tube in a process called fertilization. (bartleby.com)
We observed interactions between the female's microbiome and her mating status: transcripts of genes involved in reproduction and genes with neuronal functions were differentially abundant depending on the females' microbiome status, but only in mated females. (syr.edu)
Artificial Insemination (AI) - The introduction of sperm directly into a female's reproductive tract for fertilization of the egg. (nordicalagos.org)

A sperm needs normal shape, movement (motility), and function for fertilization without a hitch. (healthwebmagazine.com)
This analysis evaluates the sperm count (normal is greater than twenty million), sperm motility and shape, and semen volume. (westonaprice.org)
Copper releasing IUDs (CuT, multiload) increase phagocytosis of sperms within the uterus and the Cu ions released suppress sperm motility and the fertilising capacity of sperms. (ncertmcq.com)
Asthenozoospermia - Sperm with reduced motility and consequently poor quality. (nordicalagos.org)

When a human sperm penetrates a human ovum, or egg, generally in the upper portion of the Fallopian Tube, a new entity comes into existence. (sciforums.com)
a student mentioned that one of her molecular-biology professors had made reference to it in class: After the sperm penetrates the ovum, it remains possible, with modern technology, to extract that sperm, with the result that one will have both the sperm and the ovum once again. (robertpgeorge.com)

We now report a dramatic increase in NAADP during sea urchin egg fertilization that was largely due to production in sperm upon contacting egg jelly. (ox.ac.uk)
The acrosome, a single exocytotic vesicle on the head of sperm, has an essential role in fertilization, but the exact mechanisms by which it facilitates sperm-egg interactions remain unresolved. (nih.gov)
Soon after fertilization, the vast majority of methylcytosine in sperm is converted by the Tet3 enzyme to hydroxymethylcytosine that gets lost by dilution during replication, effectively erasing cytosine methylation patterns except for a subset that is maintained, including those of some imprinted genes. (i-sis.org.uk)
After fertilization, the sperm genome is rapidly stripped of protamines and most, but not all histones. (i-sis.org.uk)
At fertilization, the ovum and the sperm cease to be and something new comes to be - an organism (the embryo) whose genetic constitution and epigenetic state orient and dispose it to develop in the direction of maturity as a member of the species. (robertpgeorge.com)
or (2) the in vitro fertilization technology known as intracytoplasmic sperm injection (ICSI), in which a technician uses a pipette to mechanically insert a sperm into an ovum. (robertpgeorge.com)
In normal (natural or standard in vitro ) fertilization, many sperm penetrate the corona radiata of the ovum (a layer of follicle cells surrounding the ovum). (robertpgeorge.com)
It seems reasonable to hold that if the sperm can be retrieved and still behave as a sperm, without the assistance of extensive manipulation, fertilization has not yet occurred. (robertpgeorge.com)
The minisymposium, organized by Victor D. Vacquier, included the following presentations: "An Hypothesis to Explain the Evolution of Species-Specific Fertilization" by Victor D. Vacquier, "Molecular Biology of the Zona Pellucida: Genetic Mutations and Fertility" by Jurrein Dean, and "Sperm-Egg Membrane Interactions During Fertilizations" by Janice P. Evans. (bioone.org)
Role in fertilization In mammalian fertilization, hyaluronidase is released by the acrosome of the sperm cell after it has reached the oocyte, by digesting hyaluronan in the corona radiata, thus enabling conception. (vidque.com)
protects oocytes, eggs, and embryos during development, and regulates interactions between ovulated eggs and free-swimming sperm during and following fertilization. (vidque.com)
In most mammalian fertilization, hyaluronidase is released by the acrosome of the sperm cell, after it has reached the oocyte. (vidque.com)
As a result, they can't penetrate the ovum to allow fertilization to occur. (healthwebmagazine.com)
The unification of a sperm and an ovum to form a zygote constitutes fertilization . (rxlist.com)

The key difference between zona pellucida and corona radiata is that zona pellucida is a non-cellular secretory glycoprotein layer that surrounds the plasma membrane of mammalian ovum while corona radiata is a follicle cell layer that surrounds zona pellucida. (vidque.com)

At best, the male pronucleus could be extracted from the zygote, that is, the new, one-celled organism. (robertpgeorge.com)
The result would not be a sperm and an ovum, but only nuclear material from a zygote, on the one hand, and a disabled embryo (or perhaps the death of the embryo), on the other. (robertpgeorge.com)
In ICSI, sperm is directly injected into ovum, in vitro to form zygote, which is implanted through ZIFT into woman. (ncertmcq.com)

The swelling decreases sperm quality and causes infertility. (healthwebmagazine.com)
Infections - Some sexually transmitted diseases (STDs) [ 4 ] may permanently damage the reproductive system and cause infertility and low sperm quality. (healthwebmagazine.com)
The most common cause of infertility in men is abnormal sperm, accounting for 90 percent of cases. (westonaprice.org)
ICSI or Intra Cytoplasmic Sperm Injection is one of the techniques of Assisted Reproductive Technology (ART) that helps couples to overcome their infertility. (ncertmcq.com)
Male factor in human infertility / editor, J. Tesarik. (who.int)

This study was conducted to evaluate in vivo and in vitro development of in vitro-matured equine oocytes fertilized by intracytoplasmic sperm injection. (bioone.org)

Then, typically, only one sperm will penetrate the zona pellucida (a film of glycoproteins surrounding the oocyte) and reach the oocyte. (robertpgeorge.com)
The enzymes esterase, acrosin, and neuraminidase appear to causelysis (dissolution or loosening) of the zona pellucida, thereby forming a path for the sperm to enter the oocyte. (vidque.com)

During double fertilisation in angiosperms the haploid male gamete combines with two haploid polar nuclei to form a triploid primary endosperm nucleus by the process of vegetative fertilisation. (wikipedia.org)
These enzymes break down the outer membrane of the ovum, called as the zona pellucida, allowing the haploid nucleus in the sperm cell to join with the haploid nucleus in the ovum. (vidque.com)

The gametes that participate in fertilisation of plants are the sperm (male) and the egg (female) cell. (wikipedia.org)
Various families of plants have differing methods by which the gametes produced by the male and female gametophytes come together and are fertilised. (wikipedia.org)
Unlike the gametes - the sperm and egg cells independent of each other - it is no mere part of another organism, nor is it merely something that can be used to produce a complete organism. (robertpgeorge.com)
i) production of female gametes i.e., ova (ii) secretion of female hormones i.e., estrogen and progesterone. (assignmentsbag.com)
The reproductive events in humans include the formation of gametes i.e., sperms in males and ovum in females. (toppr.com)
Male gametes production and quality / S. Hamamah, R. Mieusset, editors. (who.int)

and (b) a calcium wave is produced throughout the new cell's cytoplasm so that the zona pellucida hardens over approximately 30 minutes and repels penetration by sperm. (robertpgeorge.com)
The sperm enzyme acrosin functions in sperm binding to, and penetration of, the egg zona pellucida. (vidque.com)
Membrane-bound acrosin may well serve as a zona lysin, as the sperm head advances through the zona pellucida. (vidque.com)

Then near the receptacle, it breaks through the ovule through the micropyle (an opening in the ovule wall) and the pollen tube "bursts" into the embryo sac, releasing sperm. (wikipedia.org)
requirements have thyroid leeside by hulle Alta Genetics afdeling en Wikus se namesake being van Click embryo en emergency mechanics interest angles. (need4speed.com)

Oocytes were collected from slaughterhouse-derived ovaries, matured in vitro, and injected with frozen-thawed stallion sperm. (bioone.org)

On the other hand, when the sperm is mechanically inserted into the ovum via ICSI, it is not clear precisely when the ovum and the sperm unite and cease to be, or at least, it is not clear to us - and we have not taken a position on the question. (robertpgeorge.com)
The method of directly injecting a sperm into ovum in assisted reproductive technology is called (a) GIFT (b) ZIFT (c) ICSI (d) ET. (ncertmcq.com)

Very importantly, the role of the male partner (or sperm donor) must not be forgotten in this process as without the male gamete that fertilises the female ovum, whether naturally or artificially through assisted conception, pregnancy cannot occur. (tarshi.net)
Sperm-egg interactions occur at multiple levels on the egg surface, first with the egg's extracellular matrix and then with the egg's plasma membrane. (bioone.org)

Science has developed artificial ways to fertilize ovums with sperms in laboratories, without the necessity of any physical contact between the man and the woman to whom the sex cells belong. (arvindus.com)
Germ cell movement within the epithelium is vital because germ cells, if induced to release into the tubule lumen prematurely, will be unable to fertilize the ovum. (proteinlounge.com)
However, there are high chances of the few sperms in the semen failing to fertilize an ovum and result in a pregnancy. (healthwebmagazine.com)
In reality, looking at sperm under the microscope is not a very accurate way to assess their ability to fertilize an egg, but it is the best test currently available. (westonaprice.org)
In one of the most well-studied examples, the spermatozoa of all mammalian species must undergo a series of physiological changes, termed capacitation, in the female reproductive tract before realizing their potential to fertilize an ovum. (bvsalud.org)

The sperm count for sufferers is below 15 million sperms per deciliter of semen ejaculated. (healthwebmagazine.com)
You have a low sperm count if your semen contains fewer than 15 million sperm per ML [ 1 ] . (healthwebmagazine.com)
Furthermore, sperm must move from the testicles to mix with semen in the epididymis for ejaculation through an erect penis. (healthwebmagazine.com)
The man must provide a sample of his ejaculate and it is sent for semen analysis. (westonaprice.org)
Azoospermia - The absence of sperm in semen. (nordicalagos.org)
WHO laboratory manual for the examination of human semen and semen-cervical mucus interaction. (who.int)
Both unilateral and bilateral cryptorchidism are associated with a decrease in sperm production and semen quality, regardless of the timing of orchidopexy. (medscape.com)

and the uterus (an organ in the pelvic cavity in which fertilized ova mature). (catwatchnewsletter.com)
The inner layer (the endometrium) serves as the internal lining of the uterus and provides a suitable environment for the development of fertilized ova. (catwatchnewsletter.com)
This can inhibit the sperm from making its way into the uterus and fallopian tubes. (pilotcar.biz)
There could be an issue with your partner's sperm or with your uterus or fallopian tubes. (pilotcar.biz)
The hormone releasing IUDs (progestaserf, LNG-20), make the uterus unsuitable for implantation and the cervix hostile to the sperms. (ncertmcq.com)
Blighted ovum (egg) - A fertilized egg that implants itself in the uterus but does not develop normally. (nordicalagos.org)

Otherwise, fertility problems may continue, and you may not have children for a lifetime if your sperms continue to be so few in each ejaculate. (healthwebmagazine.com)
The goal of this article is to explain the basics of male fertility and describe what can disrupt it, and then to present some simple ways to improve health and regain that fertility. (westonaprice.org)
Though the focus of this article is male fertility, these factors apply to the health and fertility of women as well as men. (westonaprice.org)
Fertility for a man is defined as the ability to impregnate a woman and produce offspring. (westonaprice.org)
If the man has a medical condition, it is important to consider it as part of improving health and fertility. (westonaprice.org)
This is more likely to affect fertility if counts were below normal for a particular man when young. (westonaprice.org)
Adrenal Androgens - Male hormones produced by the adrenal gland that are sometimes elevated in women with PCOS, causing fertility problems. (nordicalagos.org)
Andrologist - A doctor that specializes in the area of male health, particularly male fertility and reproductive health. (nordicalagos.org)

Oscar Hertwig (1876), in Germany, described the fusion of nuclei of spermatozoa and of ova from sea urchin. (wikipedia.org)

Just as the man enters the woman for a unification, and just as the penis enters the vagina to do the same, so does also the sperm enter the ovum for a unification by means of a fusion. (arvindus.com)

or (b) males or a combination of males and females. (stanford.edu)
There is good psycholinguistic evidence that those who encounter sentences (like (3) and (4) ) using the terms 'he' and 'man' think more readily of males than of females. (stanford.edu)
Combination REBETOL/INTRON A therapy is contraindicated in females who are pregnant and in the male partners of females who are pregnant. (druglib.com)
Females of childbearing potential and males must use two reliable forms of effective contraception during treatment and during the 6-month posttreatment follow-up period. (druglib.com)
Sibylla pretiosa is a small yet striking insect that usually measures between 5 to 6 cm long with the females generally being slightly larger than the males. (bantam.earth)
Here we investigated fecundity and the post-mating transcript abundance profile of axenic or control females after mating with either axenic or control males. (syr.edu)
Sterilisation techniques are surgical procedures where, in males, vas deferens are cut and tied and in females, Fallopian tubes are cut and tied, preventing gamete transport. (ncertmcq.com)

These roles of the male and female reproductive organs during sexual intercourse (and the roles of men and women in their sexual interaction in general), are analogous to the roles that the male sperm and the female ovum play in the process of conception. (arvindus.com)
Because as an embryonic-image generated by our higher soul-self at conception (see Man As An Embryonic Soul-Image ), when we fail to develop, we remain earth-bound in our thinking and lack of development. (blogspot.com)
Specifically, low sperm count is when the ejaculate doesn't contain adequate sperm to enable conception. (healthwebmagazine.com)

Moreover, the sperm-induced cortical flash was eliminated in eggs desensitized to NAADP. (ox.ac.uk)
All treatments that involve combining the eggs that were removed from a woman's ovaries with sperm to enable pregnancy. (nordicalagos.org)

In Antiquity, Aristotle conceived the formation of new individuals through fusion of male and female fluids, with form and function emerging gradually, in a mode called by him as epigenetic. (wikipedia.org)
In flowering plants, two sperm cells are released from the pollen grain, and a second fertilisation event involving the second sperm cell and the central cell of the ovule, which is a second female gamete. (wikipedia.org)
The rupture of the pollen tube to release sperm in Arabidopsis has been shown to depend on a signal from the female gametophyte. (wikipedia.org)
And if I make the statement that Sex and Offspring-Propagation are in fact a secondary byproduct of the Primary Purpose of Male and Female Sexual Interaction, perhaps only a mere handful of people could understand the real purpose of Sexual-Intimacy and the higher purpose of the Life we are living today. (ebionite.com)
So this sexual intercourse by means of which the species are reproduced is primarily an interaction between male and female genitals or organs of reproduction. (arvindus.com)
The main difference between the male and the female genitals is that the first is mostly an external organ, whereas the latter is mostly an internal organ. (arvindus.com)
In the act of sexual intercourse the male external organ of reproduction enters the female internal organ of reproduction. (arvindus.com)
We see here that the male organ of reproduction plays a more active role in sexual intercourse than does the female, which can be considered as more passive. (arvindus.com)
Nevertheless it is a general thought that the male principle is the active one and that the female principle is the passive one. (arvindus.com)
In this process does the sperm visit the ovum within the female reproductive organ (at the fallopian tubes to be precise), and the ovum there receives the sperm. (arvindus.com)
Hormonal interaction between the hypothalamus, anterior pituitary gland, and ovaries regulates the female reproductive system. (msdmanuals.com)
Puberty references Hormonal interaction between the hypothalamus, anterior pituitary gland, and ovaries regulates the female reproductive system. (msdmanuals.com)
The question of whether the foetus is male or female is often the first question that is asked by them. (tarshi.net)
So an abortion clearly kills a new male or female human life. (sciforums.com)
At this point the genetic material from the ovum (the female pronucleus) and the genetic material from the sperm (the male pronucleus) are both contained within a single new cell, are being moved toward each other, and will eventually intermingle. (robertpgeorge.com)
some men are female. (stanford.edu)
This explains why 'men' in (5) and 'man' in (6) are anomalous: these terms are being used to refer exclusively to persons known to be female. (stanford.edu)
The cell formed by the union of a male sex cell (a sperm ) and a female sex cell (an ovum). (rxlist.com)
Extreme care must be taken to avoid pregnancy during therapy and for 6 months after completion of treatment in female patients, and in female partners of male patients who are taking combination REBETOL/INTRON A therapy. (druglib.com)
Organisms which bear both male and female sex organs in the same individual are called bisexual. (assignmentsbag.com)
1. Female or Male aged =18 years to =55 years at the date of signing informed consent. (who.int)
3. Male participants with a female partner(s) who is (are) pregnant or lactating at screening and/or on Day -1, or is (are) expected to be during the trial period. (who.int)

This review focuses on recent findings using genetically modified mice (gene knockouts and transgenic 'green acrosome' mice) to study the effects of eliminating acrosomal matrix-associated proteins on sperm structure and function. (nih.gov)
In mammals, most histone proteins are lost during sperm development, eventually to be replaced by protamines. (i-sis.org.uk)
These changes are induced either by mating itself or by sperm or seminal fluid proteins. (syr.edu)

Understanding this lethal condition requires a general knowledge of the intact feline reproductive apparatus and the interaction between its physical constituents and the various hormones that influence its activity. (catwatchnewsletter.com)
In addition, pituitary and hypothalamus glands [ 2 ] must produce the hormones required to kick off sperm production. (healthwebmagazine.com)
These drugs are similar to male hormones made by the body. (pilotcar.biz)

Some gene knockouts produce infertile phenotypes with obviously missing, specific activities that affect acrosome biogenesis during spermatogenesis or interfere with acrosome function in mature sperm. (nih.gov)

Chronic medical illnesses may directly suppress sex hormone production and sperm production, leading to end-organ failure. (medscape.com)

When cervical mucus is exposed to estrogen, the fact that it is watery and thin helps the sperm travel up to the fallopian tubes easily. (pilotcar.biz)

While you cant see skin cells or muscle cells, the ovum is typically large enough to be seen with the naked eye with a diameter of about a millimeter. (healthandmed.com)

In Bryophyte land plants, fertilisation of the sperm and egg takes place within the archegonium. (wikipedia.org)
Thus, in the absence of, gonadotropins, ovum is not released and hence chances of fertilisation are nil upto 6 months following parturition (if the mother is regularly breast-feeding). (ncertmcq.com)

The sperm cell, on the other hand, is tiny, consisting of little more than nucleus. (healthandmed.com)
Sertoli-Germ (Spermatid)-cell interactions affect spermatogenesis at the molecular, cellular and biochemical levels. (proteinlounge.com)
Ovum is the largest cell present in human body. (assignmentsbag.com)
[1] is the differentiation of the ovum (egg cell) into a cell competent to further develop when fertilized. (wikipedia.org)

That means the amount of sperm found in each ejaculate contains less sperm than necessary. (healthwebmagazine.com)

this allows cytoplasmic factors derived from the ovum to affect the nuclear contents derived from the sperm - for example, new types of histones begin to be associated with those chromosomes, modifying the behavior and interaction of the molecules in these chromosomes. (robertpgeorge.com)

Men and women may be infertile, they may be using contraceptives, or they may have sex with those who belong to the same gender as themselves. (arvindus.com)
The initial step in the evaluation of an infertile male is to obtain a thorough medical and urologic history. (medscape.com)

oocytogenesis , ootidogenesis , and finally maturation to form an ovum (oogenesis proper). (wikipedia.org)

EDITOR'S PREFACE: The first paper in this issue of Biology of Reproduction is a minireview entitled "Getting Sperm and Egg Together: Things Conserved and Things Diverged," by Janice P. Evans. (bioone.org)

The sperm are transferred from the pollen through the pollen tube to the ovule where the egg is fertilised. (wikipedia.org)
citation needed] Unlike animal sperm which is motile, plant sperm is immotile and relies on the pollen tube to carry it to the ovule where the sperm is released. (wikipedia.org)
This increased uptake of calcium causes the pollen tube to rupture, and release its sperm into the ovule. (wikipedia.org)

And from the perspective of human consciousness, this inner fragmentation can be reduced to the number 144,000 points that make up the Mind of man as patterned within the diagram of the Tree of Life. (blogspot.com)
This is the point just after the fusion of the membranes of the sperm and the ovum, when the ovum and the sperm cease to be, and a new organism - a whole human organism - comes to be. (robertpgeorge.com)
What is the function of hyaluronidase enzymes present in human sperm? (vidque.com)
When handled gently and regularly, the praying mantis will eventually learn to tolerate and even enjoy human interaction. (bantam.earth)

To the degree that many of our supposed scholars confuse different forms and varieties of mutual masturbation with actual sexual interaction, and many of these self-proclaimed authorities can't even define what a woman is. (ebionite.com)
And if you can't understand the reason why man and woman are representative of opposite polarities of mind -- much less the deeper purpose of sexual interaction -- then you are a slave to your own ignorance that can be portrayed as a prisoner of Plato's Cave of Illusions that are Allusions to a Higher Soul Reality. (ebionite.com)

It is a very sensitive structure, analogous to the male penis. (medscape.com)

Man and Woman are Opposite polarities of Mind that have been separated, so higher growth and development can be achieved through direct interaction. (ebionite.com)
Biology is basically a natural science that studies life and leaving organism like their physical structure, chemical process molecular interactions, physiological mechanism development, and evolution. (toppr.com)
Competition to achieve paternity has contributed to the development of a multitude of elaborate male reproductive strategies. (bvsalud.org)

What this means is that those who Gnostics have traditionally portrayed as "natural" or nature-man, not only dwells in a very fragmented and divided condition of mind and being, but there are other ramifications and consequences that greatly effect our understanding of both the Tree of Life and the mind of man. (blogspot.com)

In males, decreased general health status appears to be associated with impaired male reproductive health. (medscape.com)

In the case of environmental toxins, Michael Skinner's reproductive biology lab at Washington State University Pullman in the United States first reported in 2005 that injecting pregnant rats with endocrine disruptor fungicide vinclozolin caused sperm abnormalities that persisted in the male progeny for at least 4 generations [4]. (i-sis.org.uk)

Many men fail to make their partners pregnant due to low sperm count. (healthwebmagazine.com)

Subsequently, they found that insecticides DDT and permethrin, jet fuel, plastic additives phthalates and bisphenol A, and dioxin can all trigger trans-generational health effects in rats such as obesity and ovarian disease, and each resulted in a different pattern of methylation in sperm DNA, according to Skinner. (i-sis.org.uk)
Accordingly, male Sprague-Dawley (SD) and Brown Norway (BN) rats were maintained on either regular (Reg) or high fat (HF) diets for 24wk. (cdc.gov)

Erectile Dysfunction commonly known as ED or Impotence, affects a large segment of the male population that results in impaired relaxation of the smooth muscle cells in the corpus cavernosum and in the penile arteries. (proteinlounge.com)

Precocious puberty, defined as the onset of puberty before age 9 years in males, may be the sign of a serious underlying endocrinologic disorder. (medscape.com)

Manuel de laboratoire de l' OMS : analyse du sperme humain et de l' interaction des spermatozoïdes avec le mucus cervical / traduction de Jacques Auger, Pierre Jouannet. (who.int)

The decrease in sperm production may not be realized until 1-3 months later. (medscape.com)

It is true that men can remain fertile until old age and have fathered children into their eighties. (westonaprice.org)

Diagram showing the reduction in number of the chromosomes in the process of maturation of the ovum . (wikipedia.org)

1 It is used to refer to the physical interaction between bodies and their genitals. (arvindus.com)
The mentioning of the genitals is important because physical interaction between people in which the genitals are not involved is generally not considered as sex. (arvindus.com)

Anatomy36

Organisms12

Diseases15

Chemicals and Drugs25

Analytical, Diagnostic and Therapeutic Techniques and Equipment28

Psychiatry and Psychology2

Phenomena and Processes34

Technology, Industry, Agriculture1

Information Science3

Health Care3

Female's4

Motility4

Penetrates2

Fertilization14

Corona radiata1

Zygote3

Infertility5

Intracytoplasmic sperm inj1

Oocyte2

Haploid2

Gametes6

Zona pellucida3

Embryo2

Vitro1

ICSI2

Occur2

Fertilize5

Semen7

Uterus6

Fertility8

Spermatozoa1

Unification1

Females7

Conception3

Eggs2

Female22

Proteins3

Hormones3

Acrosome1

Suppress1

Fallopian tubes1

Typically1

Fertilisation2

Cell4

Ejaculate1

Histones1

Infertile2

Oogenesis1

Reproduction1

Ovule3

Human4

Sexual Interaction2

Analogous1

Development3

Dwells1

Reproductive health1

Biology1

Pregnant1

Rats2

Cells1

Puberty1

Cervical1

Production1

Fertile1

Process1

Physical2