Abdomen and inguinal ring lecture

Question 1

Abdomen

Answer 1

body region from caudal extent of thoracic region to cranial extent of pelvis

Question 2

Differences between peritoneal cavity and pleural cavitiy

Answer 2

no negative pressure in peritoneal cavity, peritoneal cavity is in the abdominal cavity and pleural cavity is in the thoracic cavity

Question 3

Vaginal process

Answer 3

abdominal extension of the peritoneal cavity

Question 4

Vaginal cavity

Answer 4

peritoneum that extends out of the abdominal cavity and lines the structures of the vaginal process

Question 5

Why does the female K9 possess a vaginal process

Answer 5

Female gene turns on later during fetal developement

Question 6

Peritoneum types

Answer 6

Parietal- against walls, Visceral- on organs, Connecting- between dorsal wall to organs (mesentery) and organs to organs (ligaments)

Question 7

Broad ligament

Answer 7

mesentery

Question 8

Number peritoneal cavity in the fetal and after birth

Answer 8

Fetal: 2.

After birth: 1.

Question 9

Borders of deep inguinal rings

Answer 9

Rectus abdominus, internal abdominal oblique, inguinal ligament

Question 10

Borders of superficial inguinal ring

Answer 10

External abdominal oblique

Question 11

Inguinal canal

Answer 11

space between the deep inguinal ring and the superficial inguinal ring

Question 12

Structures that pass through the inguinal canal for both genders

Answer 12

External pudendal a. and v., genitofemoral n., vaginal process, gubernaculum

Question 13

Vaginal ring

Answer 13

Transition from parietal peritoneum to vaginal tunic. It is superimposed on the deep side of the deep inguinal ring

Question 14

Purpose of the gubernaculum in fetal development

Answer 14

To guide the male gonads into the scrotum

Question 15

Remnants of the gubernaculum in the female

Answer 15

Suspensory lig of the ovary- dorsal wall to ovary;
Proper lig of the ovary- ovary to tip of uterine horn;
Round lig of the uterus- tip of uterine horn to vaginal process

Question 16

Process of the gubernaculum (guber for short) guiding the testes to the scrotum

Answer 16

Guber grows from the dorsal wall to the testis, epididymus and out of the inguinal ring to attach to the scrotal area.
The dorsal wall attachment breaks down and the remaining guber shrinks, pulling the testis to the body wall near the inguinal ring.
Guber swells forcing the inguinal ring to expand until the testis has room to fall through the inguinal ring.
Guber continues to shrink placing the testis in the scrotum and becoming the proper lig of the testis and the lig of the tail of the epididymus.

Question 17

Outer layer of vaginal tunic

Answer 17

Parietal

Question 18

Vaginal tunic around the ductus deferens, testis, and epididymus

Answer 18

Visceral

Question 19

Vaginal tunic/mesentery around vessels supplying the testis

Answer 19

Mesorchium

Question 20

Vaginal tunic/mesentery around the vessels supplying the ductus deferens

Answer 20

Mesoductus deferens