Week 3 Flashcards
What substance does negative feedback on FSH release from pituitary?
inhibin
Which cells respond to LH in the male? FSH?
LH - Leydig cells (not temp. sensitive)
FSH - Sertoli cells
What is the main contribution of the seminal vesicle?
fructose and fluid for energy for motile sperm
Which glands of the prostate contribute to benign prostatic hyperplasia?
mucosal glands
What does the prostate secrete?
thin, milky, slightly acidic fluid; 25% of seminal fluid
What do bulbourethral glands (Cowper’s glands) secrete?
clear, viscous, lubricating material into urethra
What nerve causes ejaculation?
S1-S2; pudendal nerve
What are the 3 main targets of the National Prevention Council?
tobacco free, healthy eating, physical activity
About how many of the 1 million oogonia develop into mature eggs and ovulate?
400-500
What are the 2 “arrests” of oocytes?
- primary oocyte arrested in prophase of meosis 1 during 3rd month fetal development
- secondary oocyte arrested in metaphase 2 (until fertilization)
What menstrual phase begins at the end of mentstrual flow?
proliferative phase
-estrogen dependent (thecal output)
What menstrual phase has thickening my edema versus mitosis?
Secretory phase (proliferative phase is by mitosis) -sawtooth appearance to glands by end
Which arteries constrict intermittently during the premenstrual phase and permanently during the menstrual phase?
coiled arteries
-causes shedding of the functional layer
What is the most common site of precancerous lesions and carcinomas of the cervix?
Squamocolumnar junction (cervix is columnar and vagina is stratified squamous non-keratinizing)
What is the diagnostic test for testicular torsion?
ultrasound (surgery under 6 hours may save testicle)
Which layer of developing embryo gives rise to the urogenital system?
intermediate mesoderm
What structure develops from the mesonephric duct?
ductus (vas) deferens
What structure gives rise to the ureteric bud?
Mesonephric duct
What structure blocks ascent of a horse shoe kidney?
inferior mesenteric artery
What structure is responsible for dividing the cloaca into the urogenital sinus and rectum?
Urorectal septum
What is responsible for the presence of a urachal fistula?
patent allantois
What is responsible for the occurrence of epispadias and exstrophy of the bladder?
failure of lateral folding of the embryo
