Flashcards in E5 Ch. 25 Deck (122)
Loading flashcards...
1
what are the primary sex organs
testes and ovaries
2
name the accessory sex organs
glands and external genitalia
3
where are the testes located
w/in the scrotum
4
what is the scrotum
skin and superficial fascia surrounding testes, positioning provides an environment 3 degrees cooler than body temp
5
what is the dartos muscle and function
layer of smooth muscle responsible for wrinkling scrotal skin
6
what is the cremaster muscle and function
band of skeletal muscle surrounding testes that elevates them
7
tunica vaginalis
serous sac enclosing testes
8
tunica albuginea
fibrous capsule of testes; divides each into 250-300 lobules
9
epididymis
comma-shaped structure on posterior testis
10
pampiniform plexus and function
where testicular veins arise from; helps keep testes cool
11
what part of the NS innervates the testes
parasympathetic and sympathetic divisions of the ANS
12
what separates the seminiferous tubules
separated by areolar CT
13
what are spermatogenic cells
sperm-forming cells
14
what are columnar sustentocytes
support cells
15
what do spermatogenic cells produce
sperm
16
about how much sperm is formed per day
~400 million
17
what part of life does sperm production being
at puberty; takes 75 days
18
what is the process of sperm formation
cells differentiate and move toward lumen
spermatogonia (stem cells)- secondary spermatocytes- spermatids-sperm
19
what do sustentocytes do
surround spermatogenic cells, assist sperm production, and secrete testicular fluid and androgen-binding protein
20
what are myoid cells
surround seminiferous tubules and contract rhythmically
21
what do interstitial endocrine cells secrete in males and what is it regulated by
testosterone; secretion regulated by LH
22
when uncoiled how long is the duct of the epididymis
6 m long
23
what type of tissue line s the epididymis
dominated by pseudostratified columnar epithelium, bears tufts of sterocilia- immotile, long microvilli
24
where do sperm gain the ability to swim and fertilize an egg though
though the acrosomal reaction
25
function of the ductus deferens
stores and transports sperm
26
describe the histology of the ductus deferens
epithelium= pseudostratified columnar, thick muscularis, and adventitia
27
list the structures found in the spermatic cord
ductus deferens, testicular blood vessels, and nerves
28
where does the superior portion of ductus deferens run though
inguinal canal
29
list the parts of the male urethra
prostatic, imtermediate (membranous), and spongy urethra
30
