reproductive sex hormones

См. также в других словарях:

• Sex steroid — Sex steroids, also known as gonadal steroids, are steroid hormones that interact with vertebrate androgen or estrogen receptors.[1] Their effects are mediated by slow genomic mechanisms through nuclear receptors as well as by fast nongenomic… …   Wikipedia

• sex hormone — n a steroid hormone (as estradiol, progesterone, androstenedione, or testosterone) that is produced esp. by the ovaries, testes, or adrenal cortex and that exerts estrogenic, progestational, or androgenic activity on the growth or function of the …   Medical dictionary

• sex — /seks/, n. 1. either the male or female division of a species, esp. as differentiated with reference to the reproductive functions. 2. the sum of the structural and functional differences by which the male and female are distinguished, or the… …   Universalium

• reproductive behaviour — In animals, any activity directed toward perpetuation of a species. Sexual reproduction, the most common mode, occurs when a female s egg is fertilized by a male s sperm. The resulting unique combination of genes produces genetic variety that… …   Universalium

• reproductive system disease — Introduction       any of the diseases and disorders that affect the human reproductive system (reproductive system, human). They include abnormal hormone production by the ovaries or the testes or by other endocrine glands, such as the pituitary …   Universalium

• 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

• sex hormone — Biochem. any of a class of steroid hormones that regulate the growth and function of the reproductive organs or stimulate the development of the secondary sexual characteristics. [1935 40] * * *       a chemical substance produced by a sex gland… …   Universalium

• sex hormone — any steroid hormone, produced mainly by the ovaries or testes, that is responsible for controlling sexual development and reproductive function. Oestrogens and progesterone are the female sex hormones; androgens are the male sex hormones …   The new mediacal dictionary

• Sex assignment — refers to the assigning (naming) of the biological sex at the birth of a baby.[1] In the majority of births, a relative, midwife, or physician inspects the genitalia when the baby is delivered, sees ordinary male or female genitalia, and declares …   Wikipedia

• Sex ratio — is the ratio of males to females in a population. The primary sex ratio is the ratio at the time of conception, secondary sex ratio is the ratio at time of birth, and tertiary sex ratio is the ratio of mature organisms. [Nancy S. Coney and W. C.… …   Wikipedia

• sex hormone — sex′ hor mone n. biochem. any of a class of steroid hormones that regulate the growth and function of the reproductive organs or stimulate the development of the secondary sexual characteristics • Etymology: 1935–40 …   From formal English to slang