penis lab

Question 1

what are the accessory glands to the penis?

Answer 1

one prostate gland, two seminal vesicles and two bulbourethral glands

Question 2

what is the scrotum?

Answer 2

it is a wall composed of skin, the dartos muscle gives it its crinkly appearance

the laters follow as the external spermatic fascia, cremasteric, internal spermatic fascia and they all derive from the abdominal wall

Question 3

describe the cremasteric reflex

Answer 3

cremaster muscle is a skeletal muscle lying deep to the dermis. in cold weather it’ll contract raising the testis

Question 4

describe the testis

Answer 4

septum separate lobules. lobules are highly coiled seminiferous tubules. per lobule there is one straight lobule which joins others to form the rete testis.
efferent ductules leave the network to join the epididymis where all the sperm is stored

Question 5

describe the tunica vaginalis

Answer 5

visceral layer lines testis, parietal lines scrotum, peritoneum sac filled with peritoneal fluid.

Question 6

describe the epididymis

Answer 6

very tightly coiled tube continuous with ductus deferens (thick smooth muscle). pseudostratified columnar epithelium with stereocilia. increase area for absorption. epididymis also starts process of maturing sperm

Question 7

describe the blood supply to the testis

Answer 7

the testicular artery is the main blood supply. venous drainage comes from the pampiniform complex drains to the testicular vein and goes to the IVC on the right and renal on the left

Question 8

describe the seminal vesicles

Answer 8

secrete alkaline viscous fluid to neutralise acidic environment of the vagina.
it also contains fructose to provide the sperm with ATP.
prostaglandins help provide motility and viability

Question 9

describe the ejaculatory duct

Answer 9

the duct of the seminal vesicle joins with the ductus deferens to form the ejaculatory duct. it penetrates through the prostate gland carrying acidic fluid to help liquefy any coagulated semen