220- Male histo

Question 1

what is the path of sperm?

Answer 1

seminiferous tubules to straight tubules to rete testis in mediastinum to efferent ductules to head then tail of epididymis to vas deferens, combines with seminal vesicle to form ejaculatory duct, urethra, then bulbourethral gland comes in

Question 2

what do the primary sex cords give rise to

Answer 2

seminiferous tubules, straight tubules, rete testis. Mesonephric duct becomes efferent ductules, duct of epididymis and vas deferens

Question 3

what forms the blood-testis barrier? why is it important

Answer 3

sertoli cells. Keeps body from reacting to antigen

Question 4

basic levels of developing sperm and main even of each phase

Answer 4

spermatogonia (mitosis or spermiocytogenesis), spermatocytes (meiosis), spermatids (spermiogenesis), spermatozoon

Question 5

what is the release of sperm into lumen called? what happens if it doesnt

Answer 5

spermiation. Common cause of infertility in men

Question 6

acrosome

Answer 6

vesicle of enzymes which enlarges to surround nucleus. Acrosome reaction happens to allow entry to ovum (different from capacitation)

Question 7

axoneme

Answer 7

microtubule doublets of the tail created by centriole. Wrapped in a sheath of mitochondria in the MIDDLE piece of tail

Question 8

what epithelium does the rete teste have? the efferent ductules and duct of epididymis and most of rest of the tract?

Answer 8

simple cuboidal

pseudostratified columnar

Question 9

are sperm motile at spermiation

Answer 9

no. They acquire motility in the epididymis

Question 10

where are sperm stored until ejaculation

Answer 10

tail of epididymis.

Question 11

capacitation

Answer 11

happens inside the female so the sperm can fertilize the egg. Glycoproteins are removed from head of sperm

Question 12

what is the sequence of events in ejaculation

Answer 12

Bulbourethral glands contract to lubricate. Vas deferens contracts to move sperm into urethra. Prostate contracts to liquefy semen. Seminal vesicles contract to add nourishment. Bulbospongiosus contracts to push it all out

Question 13

cortical reaction

Answer 13

blockage of sperm by depolarization of the ovum cell membrane then hardening of zona pellucida.

Question 14

if you give someone a drug for male infertility, how long might it take to see an effect

Answer 14

74 days of spermatogenesis plus 12 days maturing in epididymis= 86 days

Question 15

how do you identify a prostate tissue under the microscope

Answer 15

prostatic concretions (round calcifications)