Week 12: Equine GI Flashcards

1
Q

The tunica flava abdominis is associated with what muscle?

A

External abdominal oblique

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2
Q

Special feature of the esophagus in the horse

A

Cardiac sphincter is extremely tight, meaning there is no reguritation

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3
Q

Parts of the equine stomach include

A
  • Non-glandular mucosa (fundus)

- Glandular mucosa

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4
Q

What divides the non-glandular and glandular mucosa of the stomach?

A

Margo plicatus

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5
Q

Parts of the duodenum

A
  • Cranial flexure
  • Descending
  • Caudal flexure
  • Ascending
  • Duodenocolic fold
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6
Q

Jejunum is suspended by

A

The root of the mesentary

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7
Q

Parts of the ileum

A
  • Ileocecal fold
  • Ileocecal orifice
  • Ileal papilla
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8
Q

Large intestines possess ____ _____ (bands) and _____ (pouches), which are variable in number from one region to another

A
  • Taenia coli

- Haustra

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9
Q

Parts of the cecum

A
  • Base
  • Body
  • Apex
  • Cecocolic fold
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10
Q

Parts of the ascending colon

A
  • Right ventral colon
  • Ventral diaphragmatic (sternal) flexure
  • Left ventral colon
  • Pelvic flexure
  • Left dorsal colon
  • Dorsal diaphragmatic flexure
  • Right dorsal colon
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11
Q

Parts of the large intestine

A
  • Cecum
  • Ascending colon
  • Transverse colon
  • Descending (small) colon
  • Rectum
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12
Q

Are the right parts of the ascending colon fixed or mobile?

A

Fixed

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13
Q

Are the left parts of the ascending colon fixed or mobile?

A

Mobile

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14
Q

Are bands present in the small intestine?

A

Nope

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15
Q

Bands (taeniae coli) are longitudinal thickenings of

A

The tunica muscularis

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16
Q

How many bands does the cecum have?

A

4

17
Q

How many bands do the right ventral colon, ventral diaphragmatic flexure, and left ventral colon have?

A

4

18
Q

How many bands do the pelvic flexure and left dorsal colon have?

A

1

19
Q

How many bands do the dorsal diaphragmatic flexure and the right dorsal colon have?

A

3

20
Q

How many bands do the transverse colon and the descending colon have?

A

2

21
Q

The dorsal band of the cecum leads to

A

The ileocecal fold

22
Q

The lateral band of the cecum connects to the

A
  • Ventrolateral band of the colon

- “Cecocolic fold”

23
Q

Haustra result from

A

The shortening of the teniae

24
Q

Haustra are more prominent in what part of the colon?

A

Ventral colon

25
Q

What are the visceral projections on the left abdominal wall?

A
  • Liver
  • Stomach
  • Spleen
  • Descending colon
  • Jejunum
  • Left dorsal colon
  • Left ventral colon
26
Q

What are the viscera located between the left costal arch and the tuber coxae? What quadrants are they in?

A
  • Left dorsal quadrant: Jejunum and descending colon

- Left ventral quadrant: Left ventral and left dorsal ascending colon

27
Q

What are the visceral projections on the right abdominal wall?

A
  • Liver
  • Right kidney
  • Descending duodenum
  • Right dorsal colon
  • Cecum
28
Q

Base of the cecum is in contact with what?

A
  • The abdominal roof

- Connected to right kidney via the peritoneum attachment

29
Q

Location of the base of the cecum

A

Between the tuber coxae and the 15th rib

30
Q

The body of the cecum extends what direction, and is in contact with what?

A
  • Cranioventromedially

- The right flank

31
Q

Where does the apex of the cecum terminate?

A

Near the xiphoid cartilage between the right ventral colon and the left ventral colon

32
Q

Relationship of the ileum and cecum in ruminants

A

Ileum enters the large intestine at the cecocolic junction

33
Q

Relationship of the ileum and cecum in carnivores

A

There is an ileocolic orifice and a cecocolic orifice.

There is no ileocecal orifice.

34
Q

Relationship of the ileum and cecum in equine

A

There is a ileocecal orifice and a cecocolic orifice

35
Q

What artery supplying the ileum in the dog is absent in the horse?

A

Antimesenteric ileal branch of the cecal branch of the ileocolic artery

36
Q

In the horse, what supplies the cecum?

A
  • Cecal artery of the ileocolic artery

- Lateral and medial cecal arteries of the ileocolic artery

37
Q

The right colic artery supplies what in the horse?

A
  • Right dorsal colon

- Left dorsal colon

38
Q

The colic branch of the ileocolic artery supplies what in the horse?

A
  • Left ventral colon

- Right ventral colon