Lecture 18 (part 2)

Question 1

What are vascular tissues of the penis?

Answer 1

Enlarges by retaining blood in the erectile tissue

• stallions, humans, dogs

Question 2

What is fibroelastic tissue of the penis?

Answer 2

Straightening of sigmoid flexure by relaxation of retractor penis muscle

Question 3

What is unilateral cryptorchidism?

Answer 3

One testis fails to descend, may still be fertile

Question 4

What is Bilateral cryptorchidism?

Answer 4

Both testes fail to descend, likely sterile

Question 5

What is Castration?

Answer 5

Process of removing the testes

Prevent inferior genetics from passing.
Removes source of testosterone

Question 6

What is sterility?

Answer 6

Reduction or absence of fertility

Question 7

What is the difference of the avian testes?

Answer 7

Located within the abdomen

Question 8

What is the difference of the avian epididymis

Answer 8

Small compared to mammals, less sperm storage

Question 9

What is the difference of the avian ductus deferens?

Answer 9

Leads from testicles to cloaca

Major storage site for sperm

Question 10

What is the difference of the avian penis?

Answer 10

Rudimentary Phallus

- erectile in ducks and geese

Question 11

What is the difference of the avian accessory sex glands?

Answer 11

Nonexistent in avians

• seminal fluid produced by the testes
• papillae in the cloacal wall deliver sperm during mating

Question 12

How is Sperm delivered in the avian species?

Answer 12

“Cloacal kiss”