Reproductive Organs Flashcards
Ovary function
Produce oocyte/follicles/hormones
Ovary blood supply
Ovarian artery, collateral flow from uterine vessels of internal iliac artery
Ovary innervation
Pelvic splanchnic nerves (S2-S4; parasympathetic); thoracic/abdominal sympathetic chain (T11-L1; sympathetic);
sensation pathways: unconcious/reflex (pelvic splanchnic), pain (sympathetic)
Uterine tube function
Transports oocyte into uterus, common site of fertilization
Note: Implantation in uterine tube or anywhere not in the myometrium of the uterus=ectopic pregnancy
Uterine tube blood supply
Ovarian artery, collateral flow from uterine vessels of internal iliac artery
Uterine tube innervation
Pelvic splanchnic nerves (S2-S4; parasympathetic); thoracic/abdominal sympathetic chain (T11-L1; sympathetic); sensation pathways: unconcious/reflex (pelvic splanchnic), pain (sympathetic)
Uterus function
Supports development of infant from embryo to neonate
Note: Highly muscular and composed of numerous parts-fundus, body, and cervix. Endometrial lining proliferates and sheds regularly due to the actions of ovarian hormones. Pathway for pain innervation dependent on position relative to pelvic pain line-highly relevant for anesthesia
Uterus blood supply
Uterine/vaginal branches of internal iliac artery
Uterus innervation
Parasympathetic: Pelvic splanchnic nerves (S2-S4);
Sympathetic: abdominal sympathetic chain (L1-L2);
**Sensation pathways: **unconcious/reflex (pelvic splanchnic),
Pain: (sympathetic in fundus and much of body, pelvic splanchnic in lower uterus/cervix)
Cervix function
Superior part of birth canal
Note: Muscular part of uterus that protrudes into vagina
Cervix blood supply
Uterine/vaginal branches of internal iliac artery
Cervix innervation
Pelvic splanchnic nerves (S2-S4; parasympathetic); abdominal sympathetic chain (L1-L2 sympathetic); sensation pathways: unconcious/reflex (pelvic splanchnic), pain (pelvic splanchnic)
Vagina Function
Reception of sperm to uterus for fertilization, passage of infant during birth, passage of shed uterine lining during menstruation
Note: Muscle-walled canal, contains numerous mucous glands.
Vagina blood supply
Uterine/vaginal branches of internal iliac artery
Vagina innervation
Pelvic splanchnic nerves (S2-S4; parasympathetic); abdominal sympathetic chain (L1-L2 sympathetic); sensation pathways: unconcious/reflex (pelvic splanchnic), pain (pelvic splanchnic)
Labia Majora function
Protect the clitoris/urethral/vaginal openings
Note: Surrounds the labia minora forming outermost part of the vulva
Labia majora blood supply
Internal pudendal artery