Equine Digestive Accessory Organs (16) Flashcards

Dr. Nader

1
Q

What are the other abdominal organs?

A

liver
gallbladder
spleen
pancreas
accessory digestive organs

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2
Q

In the equine, the liver is mostly oriented on the [right/left] side of the abdomen

A

right

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3
Q

What are the equine liver lobes?

A

right lobe
left lateral lobe
left medial lobe
quadrate lobe
caudate process of caudate lobe

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4
Q

What does the equine not have regarding the liver?

A

papillary process
gallbladder

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5
Q

What is the name of the duct branching from the liver?

A

common hepatic duct

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6
Q

What large vein branches from the liver?

A

hepatic portal vein

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7
Q

Is the caudal vena cava dorsal or ventral to the common hepatic duct?

A

dorsal

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8
Q

Is this the left or right side?

A

left - notice how there is not much liver on the left side

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9
Q

Label 1-2

A
  1. right lobe of the liver
  2. quadrate lobe
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10
Q

Where is the equine spleen located?

A

left dorsal abdomen

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11
Q

The [apex/base] of the spleen extends cranially

A

apex

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12
Q

What part of the spleen is possibly palpable via the rectum?

A

caudal edge of greater curvature

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13
Q

What does the nephrosplenic ligament connect?

A

spleen and the left kidney

remember, spleen is mostly on left side, so it would make sense that the spleen connects to the left kidney specifically

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14
Q

What does the gastrosplenic ligament connect?

A

runs in the greater omentum and connects the lesser curvatures of the spleen to the greater curvature of the stomach

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15
Q

Label 1-2

A
  1. nephrosplenic ligament
  2. gastrosplenic ligament
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16
Q

Where is the equine pancreas located? What is its shape?

A

located transversely across the abdomen, touching the dorsal body wall

heart-shaped

17
Q

Which vessel does the pancreas wrap around?

A

the portal vein

18
Q

Which arteries arise from the celiac artery in the equine?

A

splenic a.
left gastric a.
hepatic a.

19
Q

What artery branches off the splenic artery?

A

left gastroepiploic a.

20
Q

What artery branches off the hepatic a.?

A

right gastric a.

21
Q

From the R. gastric a. (which is derived from the hepatic a.), what is its next branch?

A

gastroduodenal a.

22
Q

What are the 4 circled structures?

A
  1. celiac a.
  2. splenic a. —> L. gastroepiploic a.
  3. L. gastric a.
  4. hepatic a. —> R. gastric —> gastroduodenal a.
23
Q

What are the branches off the cranial mesenteric a.?

A

caudal pancreaticoduodenal a.
jejunal a.
ileocolic a. —> ileocolic branch
right colic a.
middle colic a.

24
Q

What are the branches off the caudal mesenteric a.?

A

L. colic a.

25
Q

Which artery supplies blood to the remaining portion of the duodenum; to all of the jejunum, ileum, cecum, large colon, and transverse colon; and to the first portion of the descending (small) colon?

A

cranial mesenteric a.

26
Q

What does the ileocolic a. supply? It’s from _____ a.

A

supplies the ileum, cecum, proximal loop of the colon, the spiral colon, and the distal loop of the colon

cranial mesenteric a.

27
Q

In equine fetal circulation, the umbilical vein becomes the ________, and the umbilical arteries become the _________

A

umbilical vein: falciform ligament

umbilical arteries: round ligaments of the bladder

28
Q

What are the equine fetal circulatory system modifications? (Structures)

A

umbilical vein
umbilical arteries
foramen ovale
ductus arteriosus

29
Q

What is the significance of the ductus arteriosus in the fetal equine?

A

serves as a shunt between the pulmonary artery and the aorta

In the fetus, blood is oxygenated in the placenta and ultimately pumped to the body systems. The fetal lungs are filled with amniotic fluid and, therefore, cannot be used to oxygenate the blood.

30
Q

What is the significance of the fossa ovale in the fetal equine?

A

allows blood flow to bypass the lungs