3. MAMMARY GLANDS

8問 • 6ヶ月前

問題一覧

BODY STRUCTURES INVOLVED IN MENSTRUATION; – ultimate initiator of menstrual cycle. Secretes GnRH. Releases FSHRF during the first half of the cycle & LHRF during the second half of the cycle.

HYPOTHALAMUS

BODY STRUCTURES INVOLVED IN MENSTRUATION; – releases the gonadotropin hormones (GH) FSH & LH

ANTERIOR PITUITARY GLAND

BODY STRUCTURES INVOLVED IN MENSTRUATION; – site of ovulation & releases estrogen & progesterone.

OVARIES

BODY STRUCTURES INVOLVED IN MENSTRUATION; – the organ from which menstrual discharge is formed. The changes in the uterine endometrium are due to ovarian hormones

UTERUS

Uterine Cycle: ____________ ( bleeding phase) • Day 1- day 5 • First day of bleeding is the first day of cycle • Stratum functionale is shed • Period of absolute infertility • Total blood loss during menses range from 30-80 ml. 60 ml average! • More than 80ml blood loss is considered excessive- need for iron supplements • Ave daily loss of iron is 0.5 to 1mg

MENSTRUAL PHASE

Uterine cycle: ___________ ( estrogenic, follicular ) • Day 6- day 14 of a 28 day cycle • The very low estrogen level during menstruation stimulates hypothalamus to secrete FSHRF, which in turn stimulates the APG to secrete FSH • Estrogen is lowest on the 3rd day of the menstrual cycle & highest a day before ovulation

PROLIPERATIVE PHASE

Uterine cycle: _________ • Day 15- day 28 • Endometrium becomes thicker and glands secrete nutrients • Uterus is prepared for implantation • Due to progesterone • If no fertilization→ constriction vessels→ menstruation

SECRETORY PHASE

Uterine cycle: Ischemic phase • If fertilization does not occur, the corpus luteum shrivels as its life span is only 8-10 days from date of ovulation. On the 26th day of a 28 day cycle, if pregnancy has not occurred, the corpus luteum begins to degenerate and becomes corpus albicans. Two days after, menstruation occurs

ISCHEMIC PHASE

HCI

JHAYS · 5問 · 1年前

HCI