Male reproductive anatomy AHS1 Flashcards Preview

Animal Health Science 1 > Male reproductive anatomy AHS1 > Flashcards

Flashcards in Male reproductive anatomy AHS1 Deck (30)
Loading flashcards...
1
Q

What is the difference between an open and closed castration?

A

The vaginal tunic remains intact in a closed castration

2
Q

What are the 3 main things the male repro tract produces?

A

Spermatozoa
Seminal fluid
Testosterone

3
Q

What is the testes heat exchange system called?`

A

Pampiniform plexus

4
Q

What makes up the pampiniform plexus?

A

The highly coiled testicular vein

5
Q

What is the muscle that retracts the testes? What is it part of?

A

The cremaster muscle

Part of the internal abdominal oblique

6
Q

What is the peritoneum that wraps around the testes called?

A

The vaginal tunic

7
Q

What are the two layers of the vaginal tunic called?

A

Parietal and visceral vaginal tunic

8
Q

What is the visceral vaginal tunic closely associated with?

A

The surface of the testes

9
Q

What is the parietal vaginal tunic closely associated with?

A

The internal spermatic fascia

10
Q

What is the internal (deep) spermatic fascia like?

A

Very tough - must cut

Cant separate it from the parietal vaginal tunic

11
Q

What is the external (superficial) spermatic fascia like?

A

Weak so can easily be blunt dissected

12
Q

What is the muscle that is closely associated with the skin surrounding the testes?

A

The dartos muscle

13
Q

What are the layers of the tissue surrounding the testes from out to in?

A
Skin
Dartos muscle
External spermatic fascia 
Internal spermatic fascia
Parietal vaginal tunic
Visceral vaginal tunic
Testes
14
Q

What happens to the cranial gonadal ligament during development?

A

It degenerates to allow the testes to be pulled caudally

15
Q

What happens to the caudal gonadal ligament?

A

It becomes the 3 main ligaments of the testes

16
Q

What are the 3 main ligaments of the testes?

A

Proper ligament of the testis
Ligament of the tail of the epididymis
Scrotal ligament

17
Q

What does the proper ligament of the testes attach between?

A

Between the testis and the ductus deferens

18
Q

What does the ligament of the tail of the epididymis attach between?

A

The ductus deferens/testis and the internal spermatic fascia

19
Q

What does the scrotal ligament attach between?

A

The internal and external spermatic fascia - easy to break down

20
Q

What is the glans part of the canine divided into?

A

The pars longa glandis and the bulbus glandis

21
Q

What is the pars longa glandis?

A

The long part of the glans - doesn’t expand as much as the bulbus glandis

22
Q

What is the bulbus glandis?

A

The bulb of the penis which expands when erect for copulatory lock

23
Q

Where is the corpus spongiosum found?

A

Surrounding the urethra

24
Q

What is the glans of the canine penis?

A

Distal expansion of the corpus spongiosum

25
Q

What is the os penis formed from?

A

The corpus cavernosa

26
Q

What muscles are contracted in the flaccid penis?

A

Retractor penis muscle and smooth muscle in walls of cavernous spaces

27
Q

What response of the nervous system causes as erection?

A

Inhibition of the sympathetic tone

28
Q

What compresses venous return?

A

The urogenital diaphragm - ischiocavernosus, ishiourethralis and bulbospongiosus

29
Q

What key blood vessel is compressed by what muscle of the urogenital diaphragm?

A

The dorsal vein of the penis is compressed by the ischiourethralis muscle

30
Q

In copulatory lock what muscle from the female constricts which blood vessel of the male?

A

The constrictor vestibuli/vestibularis muscle of the female constricts the superficial vein of the glans