Exam II (Lecture 9)

Question 1

Pancreatic openings into the duodenum.

Answer 1

Pancreatic duct (Bile duct) opens into the major duodenal papilla.

Accessory pancreatic duct opens into the minor duodenal papilla.

Note: The ox and pig only have the bile duct opening into the major duodenal papilla

Note: In the small ruminant the minor duodenal papilla is absent.

Question 2

Which species have an Anulus Pancreatis (pancreatic ring)? Which species have a Incisura Pancreatis (pancreatic notch)?

Answer 2

Pancreatic ring: pig and horse

Pancreatic notch: dog and ox

Question 3

What structure is found within the pancreatic ring or notch?

Answer 3

Hepatic portal vein

Question 4

Identify the following structures in the developing embryo.

Answer 4

1. ) Foregut
2. ) Cranial limb
3. ) Caudal limb
4. ) Cranial mesenteric artery

Question 5

What artery supplies the midgut in the developing embryo?

Answer 5

Cranial mesenteric artery

Question 6

Describe the first rotation in the embryologic development of the intestines.

Answer 6

1. ) Cranial limb of the intestines (white) undergoes explosive growth and passes to the right of the cranial mesenteric artery.
2. ) The caudal limb of the intestines (Brown) will be pushed cranially.

Question 7

Describe the second rotation in the embryologic development of the intestines.

Answer 7

1. ) The cranial limb (white)continues to undergo explosive growth and begins to move cranially.
2. ) This will cause the caudal limb (brown) to be pushed around to the right side of the mesenteric root.
3. ) There is a 270 degree rotation around the root of the mesentery
4. ) Flow of ingesta from right to left. Colon sits cranial to the mesenteric root.

Question 8

Which species goes with which intestinal tracts?

Answer 8

A.) Dog

B.) Pig

C.) Cow

D.) Horse

Question 9

What does the Celiac artery supply?

Answer 9

Supplies the foregut derivatives: Stomach, descending duodenum, pancreas, liver, spleen

Question 10

Identify the following structures labeled:

1. )
2. )
3. )
4. )

Answer 10

1. ) Celiac artery
2. ) Splenic artery
3. ) Hepatic
4. ) Left gastric

Question 11

Identify the following structures labeled:

1. )
2. )
3. )
4. )
5. )

Answer 11

1. ) Left gastroepiploic artery
2. ) Right gastroepiploic artery
3. ) Right gastric artery
4. ) Hepatic branches to the liver
5. ) Gastroduodenal artery

Question 12

Identify the following structures labeled:

1. )
2. )
3. )

A.)

B.)

Answer 12

1. ) Celiac artery
2. ) Splenic artery
3. ) Right Ruminal

A.) R/L Dorsal coronary arteries

B.) R/L Ventral coronary arteries

Question 13

Identify the following structures labeled:

1. )
2. )
3. )
4. )

Answer 13

1. ) Celiac artery
2. ) Left Gastric
3. ) Left gastroepiploic
4. ) Left Ruminal

Question 14

Identify the following structures labeled:

11. )
12. )

A.)

B.)

C.)

Answer 14

1. ) Celiac
2. ) Hepatic
3. ) Right gastroepiploic

A.) Gastroduodenal

B.) Righ gastric

C.) Hepatic branches

Question 15

What artery would you find in the right accessory longitudinal groove of the rumen?

Answer 15

Right ruminal artery

Question 16

What artery crosses over from right-left via the cranial groove and then terminates in the left longitudinal groove.

Answer 16

Left ruminal artery

Question 17

Compare the parent branch of the left gastroepiploic in the dog and the ruminant.

Answer 17

In the dog the parent branch is the splenic artery while in the ruminant it is the left gastric artery.