1
ALS 3304 Exam 1 Questions and
Answers (100% Correct Answers)
Already Graded A+
What are the 4 parts of the Scrotum? Correct Answer:
epididymis
tunica dartos
© 2025 Assignment
scrotal fascia
Guru01 - Stuvia
parietal vaginal tunica
Expert
What does the epididymis act as? Correct Answer:
thermosensor - sweat glands
What are sweat glands in the epididymis innervated by?
Correct Answer: sympathetic nerves
If an animal experiences an elevated temperature, which part
of the brain reacts and how? Correct 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? Correct Answer:
heat transfer
What is the tunica dartos a part of? Correct Answer: scrotum
What kind of muscle is tunica dartos and what is it described
as? Correct Answer: smooth muscle layer under skin (mesh-
like)
, 2
What is the function of tunica dartos? Correct Answer: elevate
testes for a sustained time
What is constantly being adjusted in the tunica dartos muscle
and what is it in response to? Correct Answer: contractions
b/c of change in scrotal skin temperature
When the tunica dartos muscle contracts, what does it allow?
Correct Answer: body & testes to be close
© 2025 Assignment
An increase in surface area in the tunica dartos muscle causes
what two occurrences? Correct Answer: perspiration, which
leads to cooling
Guru01 - Stuvia
Expert
How is the tunica dartos muscle able to contract? Correct
Answer: androgen
What is the scrotal fascia and what is it a part of? Correct
Answer: layers underneath scrotal skin; scrotum
What is the parietal vaginal tunic a part of? Correct Answer:
scrotum
What does the spermatic cord do? Correct Answer: suspend
testes
What does the spermatic cord house? Correct Answer: vas
deferens, cremaster muscle, pampiniform plexus
What does the spermatic cord connect? Correct Answer:
epididymis to pelvic urethra through the vas deferens
What does the spermatic cord provide? Correct Answer:
vascular, lymphatic, and neural connection to body
, 3
What kind of muscle is the cremaster muscle and what does it
do? Correct 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) Correct Answer:
cremaster muscle
What helps move blood through the spermatic cord and how?
Correct Answer: cremaster muscle w/ pumping action on
pampiniform plexus = facilitates blood flow
© 2025 Assignment
What are the three main things the pampiniform plexus does?
Guru01 - Stuvia
Correct Answer: concurrent heat exchanger (39C-34C)
Expert
pulse pressure eliminator
network of artery & two veins = cool testes
What is the countercurrent heat exchange? Correct Answer:
network of an artery and 2 veins = cool blood--> testes
Do veins or arteries have cooler blood? What do the 2 veins
surround in pampiniform plexus? Correct Answer: Veins;
testicular artery
What happens as the blood in veins gets closer to abdomen?
What is the range of degree change Correct Answer: Artery
warms blood in veins; 39C-34C
What are the two layers of the testicular capsule? Correct
Answer: tunica vaginalis (visceral) & tunica albuginea
What is the tunica vaginalis (visceral) for? Correct Answer:
invagination of abdominal peritoneum
ALS 3304 Exam 1 Questions and
Answers (100% Correct Answers)
Already Graded A+
What are the 4 parts of the Scrotum? Correct Answer:
epididymis
tunica dartos
© 2025 Assignment
scrotal fascia
Guru01 - Stuvia
parietal vaginal tunica
Expert
What does the epididymis act as? Correct Answer:
thermosensor - sweat glands
What are sweat glands in the epididymis innervated by?
Correct Answer: sympathetic nerves
If an animal experiences an elevated temperature, which part
of the brain reacts and how? Correct 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? Correct Answer:
heat transfer
What is the tunica dartos a part of? Correct Answer: scrotum
What kind of muscle is tunica dartos and what is it described
as? Correct Answer: smooth muscle layer under skin (mesh-
like)
, 2
What is the function of tunica dartos? Correct Answer: elevate
testes for a sustained time
What is constantly being adjusted in the tunica dartos muscle
and what is it in response to? Correct Answer: contractions
b/c of change in scrotal skin temperature
When the tunica dartos muscle contracts, what does it allow?
Correct Answer: body & testes to be close
© 2025 Assignment
An increase in surface area in the tunica dartos muscle causes
what two occurrences? Correct Answer: perspiration, which
leads to cooling
Guru01 - Stuvia
Expert
How is the tunica dartos muscle able to contract? Correct
Answer: androgen
What is the scrotal fascia and what is it a part of? Correct
Answer: layers underneath scrotal skin; scrotum
What is the parietal vaginal tunic a part of? Correct Answer:
scrotum
What does the spermatic cord do? Correct Answer: suspend
testes
What does the spermatic cord house? Correct Answer: vas
deferens, cremaster muscle, pampiniform plexus
What does the spermatic cord connect? Correct Answer:
epididymis to pelvic urethra through the vas deferens
What does the spermatic cord provide? Correct Answer:
vascular, lymphatic, and neural connection to body
, 3
What kind of muscle is the cremaster muscle and what does it
do? Correct 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) Correct Answer:
cremaster muscle
What helps move blood through the spermatic cord and how?
Correct Answer: cremaster muscle w/ pumping action on
pampiniform plexus = facilitates blood flow
© 2025 Assignment
What are the three main things the pampiniform plexus does?
Guru01 - Stuvia
Correct Answer: concurrent heat exchanger (39C-34C)
Expert
pulse pressure eliminator
network of artery & two veins = cool testes
What is the countercurrent heat exchange? Correct Answer:
network of an artery and 2 veins = cool blood--> testes
Do veins or arteries have cooler blood? What do the 2 veins
surround in pampiniform plexus? Correct Answer: Veins;
testicular artery
What happens as the blood in veins gets closer to abdomen?
What is the range of degree change Correct Answer: Artery
warms blood in veins; 39C-34C
What are the two layers of the testicular capsule? Correct
Answer: tunica vaginalis (visceral) & tunica albuginea
What is the tunica vaginalis (visceral) for? Correct Answer:
invagination of abdominal peritoneum
