11. Gonadal Sex Determination

Question 1

Secrete
1. testosterone
2. Mullerian Inhibiting
Hormone (MIH)

for development of
a) Wolffian duct and
b) Mullerian duct regression

Answer 1

Fetal TESTIS

Question 2

Secrete estrogen for development of
a) Mullerian duct
b) Wolffian duct regression.

Answer 2

Fetal OVARIES

Question 3

• Only left ovary is functional
• Right ovary is rudimentary

(usually undergoes regression alongside with the oviduct)

Answer 3

domestic chicken ovary

Question 4

(3) that has right functional ovary and oviduct (both ovaries are functional)

Answer 4

1) falcon
2) hawk
3) kiwi

Question 5

AVIAN:

secretion of estrogen and progesterone

Answer 5

steroidogenesis

Question 6

AVIAN:

uniquely in chickens, there is continuous
production of follicles

Answer 6

oogenesis

Question 7

Funnel-shaped opening at cranial end of the oviduct

a. Site of fertilization
b. Catches follicle during ovulation
c. Serves as a sperm nest - storage for sperms
d. Contributes to the formation of chalaza

Answer 7

Infundibulum

Question 8

Domestic Chicken OVIDUCT (3)

Answer 8

1. Infundibulum
2. Magnum
3. Isthmus

Question 9

Secretes albumen

Answer 9

Magnum

Question 10

a. Secretes shell membrane (inner & outer) of the egg
b. Produces fluid for albumen

Answer 10

Isthmus

Question 11

Thick, muscular pouch-like structure
- secretes more fluid for albumen

Question 12

Uterus / shell gland secretes ____ ____ to
form egg shell

Answer 12

calcium carbonate

Question 13

Short, muscular tube which opens into
the cloaca

Transports egg out of female reproductive tract into the cloaca

Answer 13

Vagina

Question 14

Common passageway for egg, feces, and urine

Answer 14

Cloaca