Making of the male

Question 1

Testicular Formation

Answer 1

• formed in the gonadal ridge of the foetus
• descend to scrotum before puberty; some species show abdominal retention
• anorchidism; failure of testicular development
• cryptorchidism; temporary or permanent failure to descend

Question 2

Retained Testes

Answer 2

• steroidogenesis still occurs
• NO spermatogenesis

Question 3

Types of testes

Answer 3

• Pendulous; protrude ventrally in inguinal region
• Non-pendulous; protrude caudally in perineal region
• Intermediate; protrude into caudal inguinal region

Question 4

Type of testes of Bull and Rams

Answer 4

PENDULOUS

Question 5

Types of testes of Cats and Boars

Answer 5

NON-PENDULOUS

Question 6

Types of testes of Stallion and Dogs

Answer 6

INTERMEDIATE

Question 7

Testicular Function

Answer 7

Testicles are both endocrine and exocrine glands
- INTERSTITIUM; leydig cells —> androgen synthesis
- blood and lymphatic vessels
- fibroblasts and connective tissue
- SEMINIFEROUS TUBULES; spermatogenesis

Question 8

4x types of spermatogenic cell types

Answer 8

• Spermatogonia
• Spermatocytes
• Spermatids
• Spermatozoa