Embryogenesis (PPP)

Question 1

Which reproductive structures originate from ECTODERM?

(8)

Answer 1

• Mammary glands
• Hypothalamus
• Pituitary Gland
• Vagina
• Vestibule
• Penis
• Clitoris

Question 2

Which reproductive structures originate from MESODERM?

(7)

Answer 2

• Gonads
• Uterus
• Cervix
• Part of the Vagina
• Epididymis
• Ductus deferens
• Accessory sex glands

Question 3

In what trimester does the broad ligament form?

Answer 3

2^nd Trimester

Question 4

In which trimester do ruminant testes descend?

Answer 4

2^nd Trimester

Question 5

In which trimester do Equine/Porcine testes descend?

Answer 5

3^rd Trimester

Question 6

What gives rise to the efferent ducts of the male repro tract?

Answer 6

Mesonephric tubules

Question 7

What gives rise to the epididymis and ductus deferens of the male repro tract?

Answer 7

Mesonephric ducts

Question 8

What anatomical structure is responsible for testes descention?

Answer 8

Gubernaculum

Question 9

Which cells secrete Anti-Müllerian Hormone?

Answer 9

Sertoli cells

Question 10

The fusion of the paramesonephris ducts leads to what 2 female reproductive structures?

Answer 10

• Uterus
• Vagina

Question 11

What does “Freemartinism” result in for female heifers?

Answer 11

• “blind” repro tracts
• canalization
• Ovaries stop growing → T production
• Behaves like a bull

Question 12

What embryonic structure gives rise to the Vestibule?

Answer 12

Urogenital sinus