OVULATION AND MENSTRUATION Flashcards
secreted during
the first half of cycle; stimulates development of
graafian follicle; secreted by anterior pituitary gland.
Follicle stimulating hormone (FSH)
stimulating hormone, leuteinizing hormone (ICSH,
LH) stimulates ovulation and development of corpus luteum; secreted by pituitary gland.
Interstitial cell
assists in ovarian follicle maturation; stimulates
endometrial thickening; responsible for development of secondary sex characteristics; maintains endometrium during pregnancy. secreted by ovaries and adrenal cortex during cycle and by placenta during pregnancy
Estrogen
aids in endometrial thickening; facilitates secretory
changes; maintains uterine lining for implantation and early pregnancy; relaxes smooth muscle. Secreted by corpus luteum and placenta
Progesterone
substances produced by various body organs that
act hormonally on the endometrium to influence the onset and continuation of labor. Used to efface the cervix before induction of labor in term pregnancies.
Prostaglandins
First half of the ovarian cycle
PROLIFERATIVE OR FOLLICULAR PHASE
Always variable in length
PROLIFERATIVE OR FOLLICULAR PHASE
Follicles of ovaries are growing Uterus lining
(endometrium) is proliferating
• Elevated Hormones
PROLIFERATIVE OR FOLLICULAR PHASE
INCREASES SECRETION OF FOLLICLE STIMULATING
HORMONE
Anterior Pituitary
Most mature of all follicles
GRAAFIAN FOLLICLE
With clear fluid rich in ESTROGEN
GRAAFIAN FOLLICLE
Only one (1) follicle matures per menstrual cycle
GRAAFIAN FOLLICLE
Ovum stays in the Fallopian tube for one (1) to three (3) days
• Peak is twenty-four hours
Extrusion of ovum from the Graafian Follicle
• Signal for Ovulation
LH Surg
Second half of the ovarian cycle
LUTEAL OR SECRETORY PHASE
Constant part
• Always fourteen (14) days in length
LUTEAL OR SECRETORY PHASE