ALS 3304 Exam 1 Questions With Complete Solutions
What are the 4 parts of the Scrotum? - (ANSWER)epididymis
tunica dartos
scrotal fascia
parietal vaginal tunica
What does the epididymis act as? - (ANSWER)thermosensor - sweat glands
What are sweat glands in the epididymis innervated by? - (ANSWER)sympathetic nerves
If an animal experiences an elevated temperature, which part of the brain reacts and how? -
(ANSWER)hypothalamus - sends impulses to sweat glands --> causes animal to sweat and cools testes
Besides the hypothalamus sending impulses to sweat glands, what other way does the epididymis cool
by? - (ANSWER)heat transfer
What is the tunica dartos a part of? - (ANSWER)scrotum
What kind of muscle is tunica dartos and what is it described as? - (ANSWER)smooth muscle layer under
skin (mesh-like)
What is the function of tunica dartos? - (ANSWER)elevate testes for a sustained time
What is constantly being adjusted in the tunica dartos muscle and what is it in response to? -
(ANSWER)contractions b/c of change in scrotal skin temperature
When the tunica dartos muscle contracts, what does it allow? - (ANSWER)body & testes to be close
An increase in surface area in the tunica dartos muscle causes what two occurrences? -
(ANSWER)perspiration, which leads to cooling
, ALS 3304 Exam 1 Questions With Complete Solutions
How is the tunica dartos muscle able to contract? - (ANSWER)androgen
What is the scrotal fascia and what is it a part of? - (ANSWER)layers underneath scrotal skin; scrotum
What is the parietal vaginal tunic a part of? - (ANSWER)scrotum
What does the spermatic cord do? - (ANSWER)suspend testes
What does the spermatic cord house? - (ANSWER)vas deferens, cremaster muscle, pampiniform plexus
What does the spermatic cord connect? - (ANSWER)epididymis to pelvic urethra through the vas
deferens
What does the spermatic cord provide? - (ANSWER)vascular, lymphatic, and neural connection to body
What kind of muscle is the cremaster muscle and what does it do? - (ANSWER)striated muscle; pulls &
relax and contract & relax during sexual excitation
Which muscle helps move sperm from testes to accessory sex glands? (can't be done for very long) -
(ANSWER)cremaster muscle
What helps move blood through the spermatic cord and how? - (ANSWER)cremaster muscle w/
pumping action on pampiniform plexus = facilitates blood flow
What are the three main things the pampiniform plexus does? - (ANSWER)concurrent heat exchanger
(39C-34C)
pulse pressure eliminator
network of artery & two veins = cool testes
What are the 4 parts of the Scrotum? - (ANSWER)epididymis
tunica dartos
scrotal fascia
parietal vaginal tunica
What does the epididymis act as? - (ANSWER)thermosensor - sweat glands
What are sweat glands in the epididymis innervated by? - (ANSWER)sympathetic nerves
If an animal experiences an elevated temperature, which part of the brain reacts and how? -
(ANSWER)hypothalamus - sends impulses to sweat glands --> causes animal to sweat and cools testes
Besides the hypothalamus sending impulses to sweat glands, what other way does the epididymis cool
by? - (ANSWER)heat transfer
What is the tunica dartos a part of? - (ANSWER)scrotum
What kind of muscle is tunica dartos and what is it described as? - (ANSWER)smooth muscle layer under
skin (mesh-like)
What is the function of tunica dartos? - (ANSWER)elevate testes for a sustained time
What is constantly being adjusted in the tunica dartos muscle and what is it in response to? -
(ANSWER)contractions b/c of change in scrotal skin temperature
When the tunica dartos muscle contracts, what does it allow? - (ANSWER)body & testes to be close
An increase in surface area in the tunica dartos muscle causes what two occurrences? -
(ANSWER)perspiration, which leads to cooling
, ALS 3304 Exam 1 Questions With Complete Solutions
How is the tunica dartos muscle able to contract? - (ANSWER)androgen
What is the scrotal fascia and what is it a part of? - (ANSWER)layers underneath scrotal skin; scrotum
What is the parietal vaginal tunic a part of? - (ANSWER)scrotum
What does the spermatic cord do? - (ANSWER)suspend testes
What does the spermatic cord house? - (ANSWER)vas deferens, cremaster muscle, pampiniform plexus
What does the spermatic cord connect? - (ANSWER)epididymis to pelvic urethra through the vas
deferens
What does the spermatic cord provide? - (ANSWER)vascular, lymphatic, and neural connection to body
What kind of muscle is the cremaster muscle and what does it do? - (ANSWER)striated muscle; pulls &
relax and contract & relax during sexual excitation
Which muscle helps move sperm from testes to accessory sex glands? (can't be done for very long) -
(ANSWER)cremaster muscle
What helps move blood through the spermatic cord and how? - (ANSWER)cremaster muscle w/
pumping action on pampiniform plexus = facilitates blood flow
What are the three main things the pampiniform plexus does? - (ANSWER)concurrent heat exchanger
(39C-34C)
pulse pressure eliminator
network of artery & two veins = cool testes
