topic 32

Question 1

general canine penis

Answer 1

musculocavernous type, where the blood spaces are much larger
In Ca, the distal end of the cavernous body is modified to form the os penis, with its ventral groove, which accommodates the urethra within the spongy body.

Question 2

muscles of the penis(se FC)

Answer 2

M. retractor penis
M. ischiocavernosusIschiadic
M. bulbospongiosus
(M. ischiourethralis)

Question 3

radix penis

Answer 3

2*crus( corpus cavernosus) with m. ischiocavernosus covering them

m. bulbospongiosus forming the bulb

(corpus spongiosum around urethra)

Question 4

corpus penis

Answer 4

• 2* corpus cavernusus with septum btw
• corpus attach to os penis ventrally

(corpus spongiosum around urethra)

Question 5

glans penis

Answer 5

pars bulbus glandis
- thickening forms “lock”

pars longus glandis
- rest of penis after bulbus glandis

(corpus spongiosum around urethra)

Question 6

blood supply of penis

Answer 6

a. penis ex pudenda interna
- perinealis ventralis (caudually)
- bulbus penis(dist) and profunda penis(prox) go inside
- dorsalis penis

a. pudenda externa
- r. preputialis to preputium (we se supf dors on penis)
- r. scrotalis ventralis (to scrotum)

Question 7

innervation of penis

Answer 7

from the lumbar and sacral plexuses:

• Paired pelvic (paraymp.)
• pudendal (mixed) nerves

Hypogastric nerves (symp.)from pelvic plexus for ejaculation and prostatic secretion

Question 8

prepuce

Answer 8

external lamina: outer hairy part
internal lamina: internal part, O: greatest diameter of bulbus glandis, ends at fornix where it is continour with skin of glans

the two meet at the tip - forming the ostium preputiale

Question 9

The area between the internal lamina and the skin of the glans is called the

Answer 9

preputial cavity

Question 10

a cutaneous trunk muscle, making sure the prepuce is drawn back over the glans in a flaccid state. They relax during erection.

Answer 10

M. protractor preputii

Question 11

innervation of prepuce

Answer 11

N. penis dorsalis -> rr. preputiales (from the n. pudenda)

N. genitofemoralis -> rr. cutaneus lateralis

Question 12

blood supply of prepuce

Answer 12

A. penis dorsalis(anastamosing branches)

A. pudenda externa -> A. epigastrica superficialis caudalis

A. bulbi penis

Question 13

layers of scrotum

Answer 13

1. fascia spermatica int
2. fascia sperm ext
3. t. dartos
4. cutis scroti (skin)

Question 14

ductus deferens enter testis where

Answer 14

cauda

Question 15

a/v/testicularis

Answer 15

v-> plexus pampiniformis, enter on caput

Question 16

inside int sperm fascia

Answer 16

cavum/proc vaginalis

Question 17

m. cremaster attached to

Answer 17

int sperm fascia

Question 18

mesorchium prox/dist

Answer 18

prox: from O of blood vessels to epididymis forming the
- plica ductus deferens and plica vasculosa

dist: btw epididymis and testis (forming wall of bursa testicularis)

Question 19

lig btw testis to tail(ductus deferens)

Answer 19

lig testis proprium

Question 20

lig to t. dartos

Answer 20

lig. scroti

Question 21

why doesnt the dog have lig. caudae epididymis

Answer 21

fascia sperm int is fused to tail of epididymis(ductus def), dont need a ligament

Question 22

blood supply and innervation of scrotum

Answer 22

r. genitalis ex n. genitofemoralis + plexus pelvinus (PS and S) + plexus mes caud(symp)

a. testicularis
r. ductus deferens