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organizational effect
The effect of a hormone on tissue differentiation and development, occurs during prenatal development TERM 2
activational effect
DEFINITION 2 Second role of sex hormones. occur in a fully developed organism and effects may depend on organisms prior exposure to organizational effects hormones. TERM 3
Sry
DEFINITION 3 the sex determining gene on the y chromosome whose product instructs the undifferentiated fetal gonads to develop into testes. TERM 4
Mullerian system
DEFINITION 4 the embryonic precursor to the female internal sex organs. TERM 5
Wolffian system
DEFINITION 5 the embryonic the precursor to the male internal sex organs.
anti-Mullerain hormone
peptide secreted by the fetal testes (Wolffian system) that inhibits the development of the Mullerain system which would otherwise become the female anatomy. used to defeminize TERM 7
defeminizing effect
DEFINITION 7 An effect of a hormone present in early development (anti- Mullerain hormone) that reduces or prevents the later development of female anatomy. TERM 8
androgen
DEFINITION 8 Androgen is a male sex steroid hormone secreted by the Wolffian system. 2 types testosterone is the principal type found in males and dihydrotesterone. TERM 9
masculinizing effect
DEFINITION 9 effect of a hormone (androgen) early in development that promotes the later development of anatomical or behavioral characteristics typical of males. TERM 10
dihydrotestosterone
DEFINITION 10 an androgen produced from testosterone by the enzyme 5- reductase.
luteinizing hormone
(LH) a hormone produced by the anterior pituitary gland that causes ovulation and devolopment of the ovarian follicle into a corpus luteum. TERM 17
estradiol
DEFINITION 17 produced by the ovaries the main type of estrogen in humans. responsible for maturation of female anatomy breasts fat deposits uterine lining inhibition of bone growth and sexdrive. if incresed stimulates surge of LH TERM 18
estrogen
DEFINITION 18 a class of sex hormones that cause female characteristics. TERM 19
menstrual cycle
DEFINITION 19 reproductive cycle in females controled by hormones of the pitutary glands and ovaries where uteral lining builds, ovulation occurs, the corpus luteum develops an without pregnancy mensuration occurs. cycle in non primates = estrous cycle. TERM 20
corpus luteum
DEFINITION 20 after ovulation ,under the influence of LH, the ruptured ovum becomes a cluster of cells that secrets estradiol and progesterone.
progesterone
a steroid hormone produced by the ovary that maintains the lining of the uterus durring the later part of the mentral cycle an inhibits the ovaries from producing another follicle ... and durring pregnancy(along with estradiol) it promote receptivity in mamals on the estrous cycle. TERM 22
pheromone
DEFINITION 22 a chemical released that affects the behavior or physiology of another animal TERM 23
Lee-boot effect
DEFINITION 23 is a phenomenon concerning the slowing an eventaul stop of oestrous cycles of rodents, when females are housed in groups and isolated from males. caused by a pheramone in the animals urine. TERM 24
Whitten effect
DEFINITION 24 synchronization of the menstrual/estrous cycle of a group of females which occurs only when a male pheromone is present. TERM 25
Vandenbergh effect
DEFINITION 25 is a phenomenon in which an early induction of the first estrous cycle in prepubertal female mice as a result of exposure to the pheromone-laden urine of a sexually mature (dominant) male mouse.
