Medical dictionary. 2011.
Acrosome reaction — During fertilization, the acrosome reaction is the reaction which occurs in the acrosome of the sperm as it approaches the egg. The acrosome is a cap like structure over the anterior half of the sperm s head.As the sperm approaches the zona… … Wikipedia
acrosome — A caplike organelle or saccule derived from the golgi that surrounds the anterior two thirds of the nucleus of a sperm cell. Within this cap are enzymes that are thought to facilitate entry of the sperm through the zona pellucida. [acro + G. soma … Medical dictionary
Acrosome — In spermatozoa (also known as sperm/sperm cell) of many animals, the Acrosome is an organelle that develops over the anterior half of the sperm s head. It is a cap like structure derived from the Golgi apparatus. Acrosome formation is completed… … Wikipedia
acrosome — n. the caplike structure on the front end of a spermatozoon. It breaks down just before fertilization (the acrosome reaction), releasing a number of enzymes that assist penetration between the follicle cells that still surround the ovum. Failure… … The new mediacal dictionary
Cortical reaction — Human ovum. The zona pellucida is seen as a thick clear girdle surrounded by the cells of the Corona radiata. Gray s … Wikipedia
ARIC — acrosome reaction ionophore challenge [test]; Atherosclerosis Risk in Communities [study] … Medical dictionary
ARIC — • acrosome reaction ionophore challenge [test]; • Atherosclerosis Risk in Communities [study] … Dictionary of medical acronyms & abbreviations
fertilization — fertilizational, adj. /ferr tl euh zay sheuhn/, n. 1. an act, process, or instance of fertilizing. 2. the state of being fertilized. 3. Biol. a. the union of male and female gametic nuclei. b. fecundation or impregnation of animals or plants. 4.… … Universalium
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
Human fertilization — is the union of a human egg and sperm, usually occurring in the ampulla of the fallopian tube. It is also the initiation of prenatal development.Fertilization constitutes the penetration of the oocyte (egg) which the sperm performs, fusion of the … Wikipedia
