Male Repro

Question 1

What are the male animal’s gonads that produce gametes?

Answer 1

Testes

Question 2

Where do testis begin development?

Answer 2

In cranial abdominal cavity

Question 3

Through which structure do testis descend?

Answer 3

Inguinal canal

Question 4

What covers the testes along with its related structures as they descend ?

Answer 4

Visceral serosal layer

Question 5

What is the name of the visceral and parietal layers that cover the testes once in the scrotum?

Answer 5

Vaginal tunic

Question 6

What is the deeper layer of the testes?

Answer 6

Tunica albuginea testis

Question 7

Which structure is attached to the testis and is the maturation site for spermatozoa?

Answer 7

Epidydimis

Question 8

List the 3 parts the make up the epidydimis

Answer 8

• head
• body
• tail

Question 9

What carries mature spermatozoa to urethra?

Answer 9

Ductus deferens

Question 10

Where does the ductus deferens meet the pelvic urethra?

Answer 10

At the level of the prostate in the dog

Question 11

Describe a closed castration

Answer 11

Scrotum incised
Ligate vessels
On parietal vaginal tunic

Question 12

Describe an open castration

Answer 12

Scrotum incised
Open parietal vaginal tunic
Ligate vessels on visceral vaginal tunic

Question 13

What are 3 ways of temperature regulation of the testicle?

Answer 13

• Pampiniform plexus
• tunica dartos mm
• Cremaster mm

Question 14

Define the pampiniform plexus

Answer 14

Venous plexus surrounding testicular artery that cools the arterial blood arriving to testicle

Question 15

Which muscle runs along spermatic cord and raises and lowers the testicle?

Answer 15

Cremaster muscle

Question 16

Describe the origin and insertion of the cremaster muscle

Answer 16

-Originates from the internal abdominal oblique
-Inserts on the vaginal tunic

Question 17

What is the musculature of the scrotum?

Answer 17

Tunica dartos

Question 18

What is the term used for a retained testicle?

Answer 18

Cryptorchidism

Question 19

Where can a testicle be retained if it is undescended?

Answer 19

In the inguinal canal or in the body (not adhered to anything)

Question 20

What is the mesentery of the testicular vessels and nerves?

Answer 20

Mesorchium

Question 21

Define the mesoductus deferens

Answer 21

Mesentery of the ductus deferens

Question 22

The mesentery spanning between the 2 ductus deferentia as they course towards urethra: ________________

Answer 22

Vaginal tunic???

Question 23

List the structures associated with the spermatic cord

Answer 23

• testicular artery
• testicular vein
• nervous/lymphatic supply
• mesorchium
• ductus deferens + its mesentery

Question 24

What is the structure that anchors the testis to the tail of the epidydimis?

Answer 24

Proper ligament of the testis

Question 25

What is the function of the ligament of the tail of the epidydimis?

Answer 25

Anchor the epidydimis to the scrotum