Reproductive Anatomy and Estrus Flashcards
Major male functions
- Produces sperm
- Introduces sperm into female repro trac
Testes
Production of sperm and testosterone
List the protecting and supporting structures:
- Scrotum
- Cremaster and tunica dartos muscles
- Spermatic chord
Secondary sex organs
Ducts that carry sperm out of testes and body
- Epididymis
- Vas deferens
- Urethra
- Penis
Accessory sex glands (3)
-Add fluid to semen
- Bulbourethral glands
- Seminal vesicles
- Prostate gland
Seminal vesicles:
Secrete fluid, energy substrates and buffers (prevent death in female repro tract)
Bulbourethral glands
Produce gel - forms a plug in female repro tract
1.5in in diameter
Prostate gland
Hot dog bun around urethra
- Fluid + salts to semen
- Provides most of the medium for transport
Rete testis
Collecting ducts for sperm
Spermatogenesis
FSH stimulates sperm production
Seminiferous tubule
Sperm formation
Cauda epididymis
Warehouse for sperm
Sperm maturation is approx. ___ days.
35
When penis is not stimulated,
- Retractor penis muscle is contracted and forms “s” shape
- long penis inside body
- prevents extension out of prepuce
When penis is stimulated,
- Retractor penis muscle is relaxed and “s” bend unfolds and penis extends
Fibroelastic penis
- During ejaculation, the penis twists and the free end forms a corkscrew shape
- Matches pattern of cervix
Boars ejaculate ________ml in volume.
150-250ml