The oocyte is pierced through the oolemma and the sperm is directed into the inner part of the oocyte (cytoplasm). The sperm is ... not required in the case of ICSI where sperm cell viability can be easily evaluated on the basis of sperm motility in most ... In ICSI IVF, the male partner or a donor provides a sperm sample on the same day when the eggs are collected.[23] The sample is ... Intracytoplasmic sperm injection (ICSI /ˈɪksi/ IK-see) is an in vitro fertilization (IVF) procedure in which a single sperm ...

... with the volume of a man's semen and sperm motility (the ability of sperm to move towards an egg) decrease continually between ... the UK more than 20 babies are born to women over age 50 per year through in-vitro fertilization with the use of donor oocytes ... In both cases the children were conceived through IVF with donor eggs. The oldest verified mother to conceive naturally (listed ... but they are nearly always due to the use of IVF with donor eggs. Pregnancies among older women have been a subject of ...

... frozen and stored specifically for transfer and donation by using donor eggs and sperm. Also, oocyte cryopreservation can be ... such as low sperm count or motility, a single sperm may be injected directly into the egg using intracytoplasmic sperm ... In the egg donor process, eggs are retrieved from a donor's ovaries, fertilised in the laboratory with the sperm from the ... In these cases the partner's or a donor's sperm may be used. ICSI is also used when sperm numbers are very low. When indicated ...

A more specified measure is motility grade, where the motility of sperm are divided into four different grades: Grade a: Sperm ... It is also commonly used for testing human donors for sperm donation, and for animals semen analysis is commonly used in stud ... or more of the observed sperm have normal morphology. Morphology is a predictor of success in fertilizing oocytes during in ... Sperm count, or sperm concentration to avoid confusion with total sperm count, measures the concentration of sperm in a man's ...

The first detailed studies of ion channels in human sperm. Detailed characterisation of the events occurring in sperm in ... and issues surrounding motivation to be a donor and receipt of donor gametes. The ChRS does not directly enter into patient ... "Stimulation of human spermatozoa with progesterone gradients to simulate approach to the oocyte. Induction of [Ca(2+)](i) ... response to steroid hormones, including the discovery of slow calcium oscillations, now thought to possibly regulate motility. ...

... gives donors the choice of being either anonymous or non-anonymous to the receiving couple. Furthermore, Nordic sperm donors ... During fertilization, the sperm provides three essential parts to the oocyte: (1) a signalling or activating factor, which ... In animals most of the energy for sperm motility is derived from the metabolism of fructose carried in the seminal fluid. This ... Mendelian inheritance Ejaculation Female sperm Female sperm storage Polyspermy Sperm competition Sperm donation Sperm granuloma ...

... by private sperm donors or sperm donors donating through an agency. A sperm agency will generally supply the male collection ... This device allows for the separation of semen samples in relation to sperm morphology, motility, progressive motility, speed, ... Ovulation is the time of the month when the oocyte, or egg, is released by the woman. This is identified as the most fertile ... Where a donor is being used, timing is particularly important because donor sperm which is supplied by a sperm bank or a ...

ASA production are directed against surface antigens on sperm, which can interfere with sperm motility and transport through ... In-vitro fertilization and donor insemination are major procedures involved. Epidemiology[edit]. Prevalence of infertility ... "Eight-hydroxy-2'-deoxyguanosine in granulosa cells is correlated with the quality of oocytes and embryos in an in vitro ... Intracytoplasmic sperm injection[edit]. ICSI technique is used in case of poor semen quality, low sperm count or failed ...

Many lesbian couples want to have children of their own. In order to raise children, they sometimes adopt. However some places do not allow homosexual couples to adopt children, so many of them want to be able to adopt children. Some lesbian couples also have their own biological children. To do this they may have artificial insemination. This is when sperm from a donor male is placed in a woman to make a pregnancy. Some lesbian women do this at home with a friend they choose to be the donor. However many may use sperm banks. These are medical businesses that match couples who need donor sperm with men who will donate. Sometimes this is done anonymously which means the couple does not know the donor. Sometimes this is done with the donor known and even chosen by the couple. ...

Intracervical insemination (ICI) is painless and is the easiest and most common insemination technique. It closely replicates the ejaculation of semen by the penis into the vagina during intercourse. ICI involves the introduction of unwashed or raw semen into the vagina at the entrance to the cervix, usually by means of a needleless syringe. It is the simplest type of artificial insemination, and unwashed or raw semen is normally used, but semen supplied by a donor through a sperm bank which has been prepared for IUI use may also be used. The procedure is commonly used in home, self-insemination and practitioner insemination procedures, and for insemination where semen is provided by private donors. In order to perform an ICI insemination, air must be expelled from a needle-less syringe which is then filled with semen which has been allowed to liquify. Any further enclosed air must be removed by gently pressing the plunger forward. The woman ...

Belgian gay rights activists are grouped into several organisations. Several of these are part of Çavaria and Wel Jong Niet Hetero (Dutch for 'Young But Not Straight'), two associations of Dutch-speaking LGBT organisations in the Flemish and Brussels regions of Belgium. The French-speaking counterpart in the Walloon and Brussels regions is the Federation des Associations Gayes et Lesbiennes. Belgian gay rights activism is made most visible by means of the BLGP "Belgium Lesbian and Gay Pride" demonstration marches. The marches are held annually in Belgium's capital Brussels since 1996, with similar events having been held intermittently in preceding years in both Brussels and other cities. While the marches have a festive character, they are also used to present the gay movement's political agenda in the form of a list of demands. The list was updated a number of times (in 1996, 1999, 2000, 2004 and 2005) and has included demands for anti-discrimination laws, inclusion of gay relationships in ...

... is an oral sex act performed by a person on a female's genitalia (the clitoris, other parts of the vulva or the vagina). The clitoris is the most sexually sensitive part of the human female genitalia, and its stimulation may result in female sexual arousal or orgasm. Cunnilingus can be sexually arousing for participants and may be performed by a sexual partner as foreplay to incite sexual arousal before other sexual activities (such as vaginal or anal intercourse) or as an erotic and physically intimate act on its own. Like most forms of sexual activity, oral sex can be a risk for contracting sexually transmitted infections (STIs/STDs). However, the transmission risk for oral sex, especially HIV transmission, is significantly lower than for vaginal or anal sex. Oral sex is often regarded as taboo, but most countries do not have laws which ban the practice. Commonly, heterosexual couples do not regard cunnilingus as affecting the virginity of either partner, while lesbian couples ...

As of the census[64] of 2010, there were 28,549 people, 12,000 households, and 5,895 families residing in the city. Northampton has the most lesbian couples per capita of any city in the US.[65] The population density was 833.7 people per square mile (321.6/km²). There were 12,728 housing units (12,000 occupied) at an average density of 360.0 per square mile (139.0/km²). The racial makeup of the city was 87.7% White, 2.7% African American, 0.3% Native American, 4.1% Asian, 0.1% Pacific Islander, 2.4% from other races, and 2.7% from two or more races. Hispanic or Latino of any race were 6.8% of the population. There were 12,000 households, out of which 21.5% had children under the age of 18 living with them, 34.6% were so-called "Husband-wife" married couples living together, 11.3% had a female householder with no husband present, and 50.9% were non-families. 37.2% of all households were made up of individuals and 10.2% had someone living alone who was 65 years of age or older. The average ...

As of the census[65] of 2010, there were 28,549 people, 12,000 households, and 5,895 families residing in the city. Northampton has the most lesbian couples per capita of any city in the US.[66] The population density was 833.7 people per square mile (321.6/km²). There were 12,728 housing units (12,000 occupied) at an average density of 360.0 per square mile (139.0/km²). The racial makeup of the city was 87.7% White, 2.7% African American, 0.3% Native American, 4.1% Asian, 0.1% Pacific Islander, 2.4% from other races, and 2.7% from two or more races. Hispanic or Latino of any race were 6.8% of the population. There were 12,000 households, out of which 21.5% had children under the age of 18 living with them, 34.6% were so-called "Husband-wife" married couples living together, 11.3% had a female householder with no husband present, and 50.9% were non-families. 37.2% of all households were made up of individuals and 10.2% had someone living alone who was 65 years of age or older. The average ...

A father is the male parent of a child. Besides the paternal bonds of a father to his children, the father may have a parental, legal, and social relationship with the child that carries with it certain rights and obligations. An adoptive father is a male who has become the child's parent through the legal process of adoption. A biological father is the male genetic contributor to the creation of the infant, through sexual intercourse or sperm donation. A biological father may have legal obligations to a child not raised by him, such as an obligation of monetary support. A putative father is a man whose biological relationship to a child is alleged but has not been established. A stepfather is a male who is the husband of a child's mother and they may form a family unit, but who generally does not have the legal rights and responsibilities of a parent in relation to the child. The adjective "paternal" refers to a father and comparatively to "maternal" for a mother. The verb ...

Terms oligospermia and oligozoospermia refer to semen with a low concentration of sperm and is a common finding in male infertility. Often semen with a decreased sperm concentration may also show significant abnormalities in sperm morphology and motility (technically oligoasthenoteratozoospermia). There has been interest in replacing the descriptive terms used in semen analysis with more quantitative information. The diagnosis of oligozoospermia is based on one low count in a semen analysis performed on two occasions. For many decades sperm concentrations of less than 20 million sperm/ml were considered low or oligospermic, recently, however, the WHO ...

Play media In biology, motility is the ability to move spontaneously and actively, consuming energy in the process. It is not to be confused with mobility, which describes the ability of an object to be moved. Motility is genetically determined (see genetic determinism) but may be affected by environmental factors. For instance, muscles give animals motility but the consumption of hydrogen cyanide (the environmental factor in this case) would adversely affect muscle physiology causing them to stiffen leading to rigor mortis. Most animals are motile but the term applies to unicellular and simple multicellular organisms, as well as to some mechanisms of fluid flow in multicellular organs, in addition to animal locomotion. Motile marine animals are commonly called free-swimming. Motility may also refer to an organism's ability to move food through its digestive tract, i.e. peristalsis (gut motility, intestinal ...

... is the final stage of spermatogenesis, which sees the maturation of spermatids into mature, motile spermatozoa. The spermatid is a more or less circular cell containing a nucleus, Golgi apparatus, centriole and mitochondria. All these components take part in forming the spermatozoon. The process of spermiogenesis is traditionally divided into four stages: the Golgi phase, the cap phase, formation of tail, and the maturation stage. The spermatids, which up until now have been mostly radially symmetrical, begin to develop polarity. The head forms at one end, and the Golgi apparatus creates enzymes that will become the acrosome. At the other end, it develops a thickened mid-piece, where the mitochondria gather and the distal centriole begins to form an axoneme. ...

Ang '''semilya''' (Ingles :'''semen''' o '''seminal fluid''') ay isang pluidong naglalaman ng [[spermatozoa]](tamod). Ito ay inilalabas ng mga [[gonad]](glandulang sekswal) at iba pang mga organong sekswal ng lalake o mga [[hermaproditiko]]ng mga hayop at maaaring magpunlay(fertilize) ng [[itlog ng babae]](ovum o ova). Sa mga tao, ang semilya ay naglalaman ng ilang mga bahagi bukod pa sa spermatozoa: ang proteolytic at iba pang mga [[ensaym]] gaya ng [[fructose]] ay mga elemento ng semilya na nagtataguyod ng pagpapatuloy ng spermatozoa at magbigay ng medium upang malanguyan ng mga ito ...

... is the ability of an organism to move independently, using metabolic energy.[3][4] This is in contrast to mobility, which describes the ability of an object to be moved. Motility is genetically determined,[5] but may be affected by environmental factors. For instance, muscles give animals motility but the consumption of hydrogen cyanide (the environmental factor in this case) would adversely affect muscle physiology, causing them to stiffen, leading to rigor mortis.[6][7][8] In addition to animal locomotion, most animals are motile (some move by passive locomotion). The term applies to bacteria and other microorganisms, and to some multicellular organisms, as well as to some mechanisms of fluid flow in multicellular organs and tissue. Motile marine animals are commonly called free-swimming,[9][10][11] and motile non-parasitic organisms are called free-living.[citation needed]. Motility also refers to an organism's ability to move food through its ...

Severe and non-severe thunderstorms peak in frequency from June through August but can occur at any time. Thunderstorms form from daytime convective heating and frontal activity; in the south, lake breeze convergences also intensify storms. Another severe type of thunderstorm is known as a Mesocyclonic Convective Complex or Derecho, which is a larger cluster-type thunderstorm mass with a more or less circular shape, often with a pronounced bow shape at its front or leading edge. During periods of hot weather in summer, they often develop in the afternoon west of the Great Lakes then strike Southern and Central Ontario at night with great forward motion, bringing severe straight-line winds over wide areas resulting in damage to forests, power interruption and infrastructure damage. The areas with the highest severe weather frequency in the province are Southwestern (Windsor, Chatham, Stratford corridor) and Central Ontario (Simcoe County including the city of Barrie, Lake Simcoe and the Kawartha ...