12.5 - Avian Male Reproductive System

Question 1

The testes of birds, like those of mammals, are paired. However, as in elephants and cetaceans, the testes do not undergo?

Answer 1

descent

Question 2

What skin does the avian male reproductive system lacks that envelopes the testes?

Answer 2

Scrotum

Question 3

► lies against the dorsomedial surface of the testis, extending along approximately two-thirds of the testicular border
► It is not divided into segments

Answer 3

Epididymis

Question 4

► This duct follows a strongly meandering course, occupying a retroperitoneal position ventromedial to the kidney
► It opens at the ostium ductus deferentis located on the conical papilla ductus deferentis (particularly prominent in chickens) in the urodeum

Answer 4

The ductus deferens

Question 5

What phallus seen for example in chickens, is composed of:
► an unpaired median phallic body flanked by
► paired lateral phallic bodies

Answer 5

non-protrusible phallus

Question 6

The phallus of the male bird is a component of the?

Answer 6

cloaca

Question 7

What type of phallus does ducks, geese and ratites have?

Answer 7

protrusible phallus