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  • Anatomia 168 domande A branch of biology dealing with the structure of organisms.
    • Regioni Del Corpo 15 domande Anatomical areas of the body.
    • Sistema Muscoloscheletrico 47 domande The MUSCLES, bones (BONE AND BONES), and CARTILAGE of the body.
    • Apparato Digerente 16 domande A group of organs stretching from the MOUTH to the ANUS, serving to breakdown foods, assimilate nutrients, and eliminate waste. In humans, the digestive system includes the GASTROINTESTINAL TRACT and the accessory glands (LIVER; BILIARY TRACT; PANCREAS).
    • Apparato Respiratorio 4 domande The tubular and cavernous organs and structures, by means of which pulmonary ventilation and gas exchange between ambient air and the blood are brought about.
    • Apparato Urogenitale 14 domande All the organs involved in reproduction and the formation and release of URINE. It includes the kidneys, ureters, BLADDER; URETHRA, and the organs of reproduction - ovaries, UTERUS; FALLOPIAN TUBES; VAGINA; and CLITORIS in women and the testes; SEMINAL VESICLES; PROSTATE; seminal ducts; and PENIS in men.
    • Sistema Endocrino 1 quesito The system of glands that release their secretions (hormones) directly into the circulatory system. In addition to the ENDOCRINE GLANDS, included are the CHROMAFFIN SYSTEM and the NEUROSECRETORY SYSTEMS.
    • Sistema Cardiovascolare 6 domande The HEART and the BLOOD VESSELS by which BLOOD is pumped and circulated through the body.
    • Sistema Nervoso 7 domande The entire nerve apparatus, composed of a central part, the brain and spinal cord, and a peripheral part, the cranial and spinal nerves, autonomic ganglia, and plexuses. (Stedman, 26th ed)
    • Organi Del Senso 3 domande
    • Tessuti 7 domande Collections of differentiated CELLS, such as EPITHELIUM; CONNECTIVE TISSUE; MUSCLES; and NERVE TISSUE. Tissues are cooperatively arranged to form organs with specialized functions such as RESPIRATION; DIGESTION; REPRODUCTION; MOVEMENT; and others.
    • Cellule 8 domande The fundamental, structural, and functional units or subunits of living organisms. They are composed of CYTOPLASM containing various ORGANELLES and a CELL MEMBRANE boundary.
      • Acinar Cells 0 domande Cells lining the saclike dilatations known as acini of various glands or the lungs.
      • Cellule Producenti Anticorpi 0 domande Cells of the lymphoid series that can react with antigen to produce specific cell products called antibodies. Various cell subpopulations, often B-lymphocytes, can be defined, based on the different classes of immunoglobulins that they synthesize.
      • Cellule Presentanti L'Antigene 0 domande A heterogeneous group of immunocompetent cells that mediate the cellular immune response by processing and presenting antigens to the T-cells. Traditional antigen-presenting cells include MACROPHAGES; DENDRITIC CELLS; LANGERHANS CELLS; and B-LYMPHOCYTES. FOLLICULAR DENDRITIC CELLS are not traditional antigen-presenting cells, but because they hold antigen on their cell surface in the form of IMMUNE COMPLEXES for B-cell recognition they are considered so by some authors.
      • Blastomeri 0 domande Undifferentiated cells resulting from cleavage of a fertilized egg (ZYGOTE). Inside the intact ZONA PELLUCIDA, each cleavage yields two blastomeres of about half size of the parent cell. Up to the 8-cell stage, all of the blastomeres are totipotent. The 16-cell MORULA contains outer cells and inner cells.
      • Cellule Del Sangue 8 domande The cells found in the body fluid circulating throughout the CARDIOVASCULAR SYSTEM.
      • Cellule Del Midollo Osseo 0 domande Cells contained in the bone marrow including fat cells (see ADIPOCYTES); STROMAL CELLS; MEGAKARYOCYTES; and the immediate precursors of most blood cells.
      • Cellule Coltivate 0 domande Cells propagated in vitro in special media conducive to their growth. Cultured cells are used to study developmental, morphologic, metabolic, physiologic, and genetic processes, among others.
      • Cellule Immobilizzate 0 domande Microbial, plant, or animal cells which are immobilized by attachment to solid structures, usually a column matrix. A common use of immobilized cells is in biotechnology for the bioconversion of a substrate to a particular product. (From Singleton & Sainsbury, Dictionary of Microbiology and Molecular Biology, 2d ed)
      • Strutture Cellulari 0 domande Components of a cell.
        • Membrana Cellulare 0 domande The lipid- and protein-containing, selectively permeable membrane that surrounds the cytoplasm in prokaryotic and eukaryotic cells.
        • Estensioni Di Superficie Cellulare 0 domande Specialized structures of the cell that extend the cell membrane and project out from the cell surface.
          • Assoni 0 domande Nerve fibers that are capable of rapidly conducting impulses away from the neuron cell body.
          • Cellulosomi 0 domande Extracellular structures found in a variety of microorganisms. They contain CELLULASES and play an important role in the digestion of CELLULOSE.
          • Ciglia (Biol) 0 domande Populations of thin, motile processes found covering the surface of ciliates (CILIOPHORA) or the free surface of the cells making up ciliated EPITHELIUM. Each cilium arises from a basic granule in the superficial layer of CYTOPLASM. The movement of cilia propels ciliates through the liquid in which they live. The movement of cilia on a ciliated epithelium serves to propel a surface layer of mucus or fluid. (King & Stansfield, A Dictionary of Genetics, 4th ed)
          • Dendriti 0 domande Extensions of the nerve cell body. They are short and branched and receive stimuli from other NEURONS.
          • Fimbrie Batteriche 0 domande Thin, hairlike appendages, 1 to 20 microns in length and often occurring in large numbers, present on the cells of gram-negative bacteria, particularly Enterobacteriaceae and Neisseria. Unlike flagella, they do not possess motility, but being protein (pilin) in nature, they possess antigenic and hemagglutinating properties. They are of medical importance because some fimbriae mediate the attachment of bacteria to cells via adhesins (ADHESINS, BACTERIAL). Bacterial fimbriae refer to common pili, to be distinguished from the preferred use of "pili", which is confined to sex pili (PILI, SEX).
          • Flagelli 0 domande A whiplike motility appendage present on the surface cells. Prokaryote flagella are composed of a protein called FLAGELLIN. Bacteria can have a single flagellum, a tuft at one pole, or multiple flagella covering the entire surface. In eukaryotes, flagella are threadlike protoplasmic extensions used to propel flagellates and sperm. Flagella have the same basic structure as CILIA but are longer in proportion to the cell bearing them and present in much smaller numbers. (From King & Stansfield, A Dictionary of Genetics, 4th ed)
            • Coda Dello Spermatozoo 0 domande The posterior filiform portion of the spermatozoon (SPERMATOZOA) that provides sperm motility.
          • Microvilli 0 domande Minute projections of cell membranes which greatly increase the surface area of the cell.
          • Neuriti 0 domande In tissue culture, hairlike projections of neurons stimulated by growth factors and other molecules. These projections may go on to form a branched tree of dendrites or a single axon or they may be reabsorbed at a later stage of development. "Neurite" may refer to any filamentous or pointed outgrowth of an embryonal or tissue-culture neural cell.
          • Peli Batterici 0 domande Filamentous or elongated proteinaceous structures which extend from the cell surface in gram-negative bacteria that contain certain types of conjugative plasmid. These pili are the organs associated with genetic transfer and have essential roles in conjugation. Normally, only one or a few pili occur on a given donor cell. (From Singleton & Sainsbury, Dictionary of Microbiology and Molecular Biology, 2d ed, p675) This preferred use of "pili" refers to the sexual appendage, to be distinguished from bacterial fimbriae (FIMBRIAE, BACTERIAL), also known as common pili, which are usually concerned with adhesion.
          • Pseudopodi 0 domande A dynamic actin-rich extension of the surface of an animal cell used for locomotion or prehension of food.
          • Stereocilia 0 domande Mechanosensing organelles of hair cells which respond to fluid motion or fluid pressure changes. They have various functions in many different animals, but are primarily used in hearing.
        • Parete Cellulare 0 domande The outermost layer of a cell in most PLANTS; BACTERIA; FUNGI; and ALGAE. The cell wall is usually a rigid structure that lies external to the CELL MEMBRANE, and provides a protective barrier against physical or chemical agents.
        • Cromosomi 0 domande In a prokaryotic cell or in the nucleus of a eukaryotic cell, a structure consisting of or containing DNA which carries the genetic information essential to the cell. (From Singleton & Sainsbury, Dictionary of Microbiology and Molecular Biology, 2d ed)
        • Spazio Extracellulare 0 domande Interstitial space between cells, occupied by INTERSTITIAL FLUID as well as amorphous and fibrous substances. For organisms with a CELL WALL, the extracellular space includes everything outside of the CELL MEMBRANE including the PERIPLASM and the cell wall.
        • Corpi D'Inclusione 0 domande A generic term for any circumscribed mass of foreign (e.g., lead or viruses) or metabolically inactive materials (e.g., ceroid or MALLORY BODIES), within the cytoplasm or nucleus of a cell. Inclusion bodies are in cells infected with certain filtrable viruses, observed especially in nerve, epithelial, or endothelial cells. (Stedman, 25th ed)
        • Spazio Intracellulare 0 domande The area within CELLS.
        • Frazioni Subcellulari 0 domande Components of a cell produced by various separation techniques which, though they disrupt the delicate anatomy of a cell, preserve the structure and physiology of its functioning constituents for biochemical and ultrastructural analysis. (From Alberts et al., Molecular Biology of the Cell, 2d ed, p163)
      • Cellule Cromaffini 0 domande Cells that store epinephrine secretory vesicles. During times of stress, the nervous system signals the vesicles to secrete their hormonal content. Their name derives from their ability to stain a brownish color with chromic salts. Characteristically, they are located in the adrenal medulla and paraganglia (PARAGANGLIA, CHROMAFFIN) of the sympathetic nervous system.
      • Cellule Del Tessuto Connettivo 0 domande A group of cells that includes FIBROBLASTS, cartilage cells, ADIPOCYTES, smooth muscle cells, and bone cells.
      • Endocrine Cells 0 domande Secretory cells of the ductless glands. They secrete HORMONES directly into the blood circulation (internal secretion) to be carried to the target cells. The secreted chemicals can be PEPTIDES; STEROIDS; NEUROPEPTIDES; or BIOGENIC AMINES.
      • Cellule Epiteliali 0 domande Cells that line the inner and outer surfaces of the body by forming cellular layers (EPITHELIUM) or masses. Epithelial cells lining the SKIN; the MOUTH; the NOSE; and the ANAL CANAL derive from ectoderm; those lining the RESPIRATORY SYSTEM and the DIGESTIVE SYSTEM derive from endoderm; others (CARDIOVASCULAR SYSTEM and LYMPHATIC SYSTEM) from mesoderm.
      • Cellule Eritroidi 0 domande The series of cells in the red blood cell lineage at various stages of differentiation.
      • Cellule Eucariotiche 0 domande Cells of the higher organisms, containing a true nucleus bounded by a nuclear membrane.
      • Cellule Germinali 0 domande The reproductive cells in multicellular organisms at various stages during GAMETOGENESIS.
      • Cellule Giganti 0 domande Multinucleated masses produced by the fusion of many cells; often associated with viral infections. In AIDS, they are induced when the envelope glycoprotein of the HIV virus binds to the CD4 antigen of uninfected neighboring T4 cells. The resulting syncytium leads to cell death and thus may account for the cytopathic effect of the virus.
      • Hepatic Stellate Cells 0 domande Perisinusoidal cells of the liver, located in the space of Disse between HEPATOCYTES and sinusoidal endothelial cells.
      • Mesophyll Cells 0 domande Large and highly vacuolated cells possessing many chloroplasts occuring in the interior cross-section of leaves, juxtaposed between the epidermal layers.
      • Cellule Muscolari 0 domande Mature contractile cells, commonly known as myocytes, that form one of three kinds of muscle. The three types of muscle cells are skeletal (MUSCLE FIBERS, SKELETAL), cardiac (MYOCYTES, CARDIAC), and smooth (MYOCYTES, SMOOTH MUSCLE). They are derived from embryonic (precursor) muscle cells called MYOBLASTS.
      • Cellule Mieloidi 0 domande The classes of BONE MARROW-derived blood cells in the monocytic series (MONOCYTES and their precursors) and granulocytic series (GRANULOCYTES and their precursors).
      • Mioblasti 0 domande Embryonic (precursor) cells of the myogenic lineage that develop from the MESODERM. They undergo proliferation, migrate to their various sites, and then differentiate into the appropriate form of myocytes (MYOCYTES, SKELETAL; MYOCYTES, CARDIAC; MYOCYTES, SMOOTH MUSCLE).
      • Neoplastic Cells, Circulating 0 domande Exfoliate neoplastic cells circulating in the blood and associated with metastasizing tumors.
      • Nevroglia 0 domande The non-neuronal cells of the nervous system. They not only provide physical support, but also respond to injury, regulate the ionic and chemical composition of the extracellular milieu, participate in the BLOOD-BRAIN BARRIER and BLOOD-RETINAL BARRIER, form the myelin insulation of nervous pathways, guide neuronal migration during development, and exchange metabolites with neurons. Neuroglia have high-affinity transmitter uptake systems, voltage-dependent and transmitter-gated ion channels, and can release transmitters, but their role in signaling (as in many other functions) is unclear.
      • Neuroni 0 domande The basic cellular units of nervous tissue. Each neuron consists of a body, an axon, and dendrites. Their purpose is to receive, conduct, and transmit impulses in the NERVOUS SYSTEM.
      • Cellule Ossifile 0 domande Large cells with small irregular nuclei and dense acidophilic granules due to the presence of abundant MITOCHONDRIA. Oxyphil cells, also known as oncocytes, are found in oncocytomas of the kidney, salivary glands, and endocrine glands. In the thyroid gland, oxyphil cells are known as Hurthle cells and Askenazy cells.
      • Pancreatic Stellate Cells 0 domande Star-shaped, myofibroblast-like cells located in the periacinar, perivascular, and periductal regions of the EXOCRINE PANCREAS. They play a key role in the pathobiology of FIBROSIS; PANCREATITIS; and PANCREATIC CANCER.
      • Periciti 0 domande Unique slender cells with multiple processes extending along the capillary vessel axis and encircling the vascular wall, also called mural cells. Pericytes are imbedded in the BASEMENT MEMBRANE shared with the ENDOTHELIAL CELLS of the vessel. Pericytes are important in maintaining vessel integrity, angiogenesis, and vascular remodeling.
      • Fagociti 0 domande Cells that can carry out the process of PHAGOCYTOSIS.
      • Plant Cells 0 domande Basic functional unit of plants.
      • Cellule Procariotiche 0 domande Cells lacking a nuclear membrane so that the nuclear material is either scattered in the cytoplasm or collected in a nucleoid region.
      • Protoplasti 0 domande
      • Cellule Di Reed-Stemberg 0 domande Large cells, usually multinucleate, whose presence is a common histologic characteristic of classical HODGKIN DISEASE.
      • Sferoplasti 0 domande Cells, usually bacteria or yeast, which have partially lost their cell wall, lost their characteristic shape and become round.
      • Spores 0 domande The reproductive elements of lower organisms, such as BACTERIA; FUNGI; and cryptogamic plants.
      • Cellule Staminali 0 domande Relatively undifferentiated cells that retain the ability to divide and proliferate throughout postnatal life to provide progenitor cells that can differentiate into specialized cells.
      • Thymocytes 0 domande HEMATOPOIETIC PROGENITOR CELLS that have migrated to the THYMUS where they differentiate into T-LYMPHOCYTES. Thymocytes are classified into maturational stages based on the expression of CELL SURFACE ANTIGENS.
    • Liquidi E Secrezioni 13 domande Liquid substances produced by living organisms to fulfill specific functions or excreted as waste.
    • Anatomia Animale 5 domande Organs and other anatomical structures of non-human vertebrate and invertebrate animals.
    • Sistema Stomatognatico 4 domande The mouth, teeth, jaws, pharynx, and related structures as they relate to mastication, deglutition, and speech.
    • Sistema Ematico E Immunitario 2 domande Organs involved in the production of BLOOD, including the cellular and the molecular components essential in providing defense against foreign organisms or substances.
    • Strutture Embrionali 1 quesito The anatomical parts that make up an organism in the early stages of development.
    • Apparato Tegumentario 1 quesito The outer covering of the body composed of the SKIN and the skin appendages, which are the HAIR, the NAILS; and the SEBACEOUS GLANDS and the SWEAT GLANDS and their ducts.
    • Plant Structures 0 domande The parts of plants, including SEEDS.
    • Fungal Structures 0 domande The parts of fungi.
    • Bacterial Structures 1 quesito The parts of bacteria.
    • Viral Structures 0 domande The structural parts of the VIRION.
  • Organismi 49 domande Any living biological entity, such as an animal, plant, fungus, or bacterium.
  • Malattie 323 domande Any impairment of normal physiological function affecting all or part of an organism, esp a specific pathological change caused by infection, stress, etc, producing characteristic symptoms; illness or sickness in general.
  • Sostanze chimiche e Farmaci 202 domande Any substance used in or resulting from a reaction involving changes to atoms or molecules, especially one derived artificially for practical use and any synthetic, semisynthetic, or natural chemical substance used in the treatment, prevention, or diagnosis of disease, or for other medical reasons.
  • Tecniche ed apparecchiature analitiche, diagnostiche e terapeutiche 109 domande
  • Psichiatria e Psicologia 14 domande The branches of medicine concerned with the diagnosis and treatment of mental illness and the scientific study of all forms of human and animal behaviour, sometimes concerned with the methods through which behaviour can be modified.
  • Scienze biologiche 31 domande
  • Scienze naturali 17 domande
  • Antropologia, Formazione, Sociologia e fenomeni sociali 3 domande
  • Tecnologia, Industria, Agricoltura 4 domande
  • Discipline umanistiche 0 domande The study of literature, philosophy, and the arts.
  • Scienza dell'informazione 0 domande The field of knowledge, theory, and technology dealing with the collection of facts and figures, and the processes and methods involved in their manipulation, storage, dissemination, publication, and retrieval. It includes the fields of COMMUNICATION; PUBLISHING; LIBRARY SCIENCE; and informatics.
  • Gruppi di persone 8 domande
  • Assistenza sanitaria 34 domande
  • Caratteristiche della Pubblicazione 4 domande
  • Luoghi geografici 7 domande The study of the natural features of the earth's surface, including topography, climate, soil, vegetation, etc, and man's response to them.
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