- ovum activation
- تنشيط البيضة
English-Arabic Medical Dictionary. 2013.
ovum activation
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Ovum activation — is the events which occur after fertilisation.Sperm entry causes calcium release into the oocyte. This is caused by the presence of PLCzeta from the sperm cytoplasm. Activation of the ovum causes the following events:*Cortical… … Wikipedia
activation — 1. The act of rendering active. 2. An increase in the energy content of an atom or molecule, through the raising of temperature, absorption of light photons, etc., which renders that atom or molecule more reactive. 3. Techniques of stimulating… … Medical dictionary
Oocyte activation — Oocyte (or ovum/egg) activation is a series of processes that occur in the oocyte after fertilisation. Sperm entry causes calcium release into the oocyte. In mammals, this has been proposed to be caused by the introduction of phospholipase C… … Wikipedia
Spermatozoon — Infobox Anatomy Name = Spermatozoon Latin = |spermiusmatro GraySubject = 258 GrayPage = 1243 Caption = A sperm cell attempts to penetrate an ovum coat to fertilize it. Width = 350 Caption2 = Diagram of a human spermatozoon System = MeshName =… … Wikipedia
Fertilisation — This article is about fertilisation in animals and plants. For fertilisation in humans specifically, see Human fertilization. For Soil improvement, see Fertiliser. Conceive redirects here. For the health magazine, see Conceive magazine. For… … Wikipedia
cell — cell1 cell like, adj. /sel/, n. 1. a small room, as in a convent or prison. 2. any of various small compartments or bounded areas forming part of a whole. 3. a small group acting as a unit within a larger organization: a local cell of the… … Universalium
Prenatal development — This article is about prenatal development of human embryos and fetuses. For other species, see prenatal development (non human). For maternal changes in the prenatal period, see Maternal physiological changes in pregnancy. Prenatal or antenatal… … Wikipedia
Respiratory burst — (sometimes called oxidative burst) is the rapid release of reactive oxygen species (superoxide radical and hydrogen peroxide) from different types of cells. Usually it denotes the release of these chemicals from immune cells, e.g., neutrophils… … Wikipedia
Alveolar macrophage — Micrograph showing hemosiderin laden alveolar marcophages, as seen in a pulmonary haemorrhage. H E stain. An alveolar macrophage (or dust cell) is a type of macrophage found in the pulmonary alveolus, near the pneumocytes, but separated from the… … Wikipedia
drug — drug1 /drug/, n., v., drugged, drugging. n. 1. Pharm. a chemical substance used in the treatment, cure, prevention, or diagnosis of disease or used to otherwise enhance physical or mental well being. 2. (in federal law) a. any substance… … Universalium
Drug — /droog/, n. Zoroastrianism. the cosmic principle of disorder and falsehood. Cf. Asha. [ < Avestan drauga] * * * I Any chemical agent that affects the function of living things. Some, including antibiotics, stimulants, tranquilizers,… … Universalium
