Follicle with ovum

См. также в других словарях:

• ovum — /oh veuhm/, n., pl. ova /oh veuh/. 1. Cell Biol. a. the female reproductive cell or gamete of animals, which is capable of developing, usually only after fertilization, into a new individual. b. the female reproductive cell or gamete of plants. 2 …   Universalium

• 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

• follicle — 1. A more or less spherical mass of cells usually containing a cavity. 2. A crypt or minute cul de sac or lacuna, such as the depression in the skin from which the hair emerges. SYN: folliculus [TA]. [L. folliculus, a small sac, dim. of follis, a …   Medical dictionary

• Ovarian follicle — Human ovarian follicle Latin folliculi ovarici primarii, folliculi ovarici vesiculosi Gray s …   Wikipedia

• cycle — 1. A recurrent series of events. 2. A recurring period of time. 3. One successive compression and rarefaction of a wave, as of a sound wave. [G. kyklos, circle] anovulatory c. a …   Medical dictionary

• Germ cell — Germ cells are progenitors of the gametes. These singled out cells move through the gut to the developing gonads and undergo mitotic proliferation followed by meiosis and differentiation into either eggs or sperm (mature gametes). Plants do not… …   Wikipedia

• Ovulation — is the process in a female s menstrual cycle by which a mature ovarian follicle ruptures and discharges an ovum (also known as an oocyte, female gamete, or casually, an egg). Ovulation also occurs in the estrous cycle of other female mammals,… …   Wikipedia

• reproductive system, human — Organ system by which humans reproduce. In females, the ovaries sit near the openings of the fallopian tubes, which carry eggs from the ovaries to the uterus. The cervix extends from the lower end of the uterus into the vagina, whose opening, as… …   Universalium

• Menstrual cycle — See also: Menstruation and Menstruation (mammal) The menstrual cycle is the scientific term for the physiological changes that can occur in fertile women. This article focuses on the human menstrual cycle. The menstrual cycle, under the… …   Wikipedia

• Oogenesis — Oogenesis, ovogenesis or oögenesis (  /ˌoʊ …   Wikipedia

• menstruation — /men strooh ay sheuhn, stray /, n. 1. the periodic discharge of blood and mucosal tissue from the uterus, occurring approximately monthly from puberty to menopause in nonpregnant women and females of other primate species. 2. the period of… …   Universalium