Lecture 28: Male repro organs

Question 1

What role does the gubernaculum play?

Answer 1

connects the lower pole of the gonad to the future inguinal canal (for descent reasons)

Question 2

What is the capillary network of the testes

Answer 2

Rete testis and efferent ductules

Question 3

What is the position of the head of the epididymis?

Answer 3

craniodorsal

Question 4

What are the two ligaments of the testes

Answer 4

ligament of the tail of the epididymis and the proper ligament

Question 5

Layers of the scrotum (outer to inner)

Answer 5

Skin (epidermis and dermis), tunica dartos, spermatic fascia (external and internal), parietal vaginal tunic, vaginal cavity, visceral vaginal tunic, tunica albuginea

Question 6

What is the role of the tunica dartos?

Answer 6

Forms the scrotal septum and helps regulate internal temp

Question 7

where does the cremaster muscle originate?

Answer 7

it originates free border of the internal abdominal oblique m.

Question 8

where does the cremaster muscle insert?

Answer 8

on the spermatic fascia and the parietal vaginal tunic

Question 9

where is colliculus seminalis located and whats it a continuation of?

Answer 9

its located on dorsal surface of prostatic urethra and is a continuation of the urethral crest

Question 10

What are the three regions of the canine penis

Answer 10

root, body, glans

Question 11

Name the three muscles associated with canine penis

Answer 11

bulbospongiousus m. (around bulb of penis), Ischiocavernosus m. (from ischiatic tuberosities to crura of penis), retractor penis m. (from external anal sphincter to the gland, caudoventral)

Question 12

What does the ligament of the tail of the epididymis connect?

Answer 12

Parietal vaginal tunic with the tail of the epididymis

Question 13

What does the proper ligament of the testis connect?

Answer 13

Tail of the epididymis to the testis

Question 14

What nerve innervates the cremaster muscle?

Answer 14

Genitofemoral nerve (L3-L4)

Question 15

What are the components of the cranial spermatic cord

Answer 15

Testicular a/v, pampiniform plexus, testicular lymphatics and testicular nerve

Question 16

What are the components of the caudal spermatic cord

Answer 16

Ductus deferens, deferent a/v, internal cremaster m

Question 17

What meso- connects the deferent duct to the mesofuniculum

Answer 17

mesoductus deferens

Question 18

What meso- connects the vascular portion of the testis to the mesofuniculum?

Answer 18

mesorchium

Question 19

Preputial orifice role in erection

Answer 19

compresses dorsal veins of penis

Question 20

Ischial arch role in erection

Answer 20

compresses dorsal veins of penis

Question 21

ischiourethralis muscle role in erection

Answer 21

restricts venous return

Question 22

What is the preputial orifice

Answer 22

ostium - opening of the prepuce

Question 23

What is the preputial fornix

Answer 23

fundus - just caudal to glans

Question 24

Name the 4 erectile tissues of the penis

Answer 24

corpus cavernosum penis (starts in root), corpus spongiosum penis (hugs urethra), corpus spongiosum glandis of the bulbus glandis (caudal glans), corpus spongiosum glandis of pars longa glandis (cranial glans)

Question 25

What are the testicular parenchyma and seminiferous tubules

Answer 25

Regions of the testes where sperm is produced in the seminiferous tubules