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S + F 2 > Horse GIT > Flashcards

Horse GIT Flashcards

1
Q

innervation of the oesophagus?

A

vagus nerve
glosso-pharyngeal nerve

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2
Q

what predisposes horses to impaction (choke)

A

Oesophagus lumen narrows at the thoracic inlet and oesophageal hiatus of the diaphragm

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3
Q

average length of oesophagus

A

1.5m

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4
Q

what type of stomach has a horse got?

A

simple composite stomach

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5
Q

why is a horses stomach known as simple?

A

has glandular and non-glandular regions

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6
Q

capacity of horse stomach

A

5-15L

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7
Q

which side of the abdomen does the stomach mainly lie in?

A

left

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8
Q

Non-glandular and glandular regions separated by visible raised line called what?

A

margo plicatus

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8
Q

Non-glandular and glandular regions separated by visible raised line called what?

A

margo plicatus

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9
Q

what are the 3 sections of the horse stomach?

A

succus caeucus
fundis
pyloric

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10
Q

what is known as the succus caecus?

A

first region food enters after oesophagus

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11
Q

what cells line the non-glandular region of the stomach?

A

stratified squamous epithelium

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12
Q

which region of the stomach does the oesophagus enter?

A

non-glandular

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13
Q

what cells line the glandular region of the stomach?

A

simple columnar epithelium

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14
Q

where is pyloric sphincter in the stomach located?

A

where pylorus meets duodenum

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15
Q

why can’t horses vomit?

A

strong cardiac sphincter

16
Q

describe the Fundic gland region of the stomach

A
  • gastric pits
  • presence of surface mucous cells
  • simple columnar epithelium
17
Q

Name the parts of the small intestine of the horse

A

Duodenum
Jejunum
Illeum

18
Q

describe the duodenum?

A

ingesta from the stomach passes into the duodenum, it is a short section that sits in the right side of the stomach and is suspended from the dorsal body wall by the mesentery

19
Q

describe the jejunum

A

associated with mesentery. It is very long and coiled

19
Q

describe the jejunum

A

associated with mesentery. It is very long and coiled

20
Q

describe the ileum

A

lack of villi on the mucosa. It is the terminal portion of the small intestine.

21
Q

what are the 4 layers of the small intestine from outer to inner layer?

A

serosa
smooth muscle
submucosa
mucosa

22
Q

which is the longest part of the small intestine?

A

jejunum

23
Q

which is the thickest part of the small intestine?

A

ileum

24
Q

name the parts of the large intestine

A

caecum
colon
rectum

25
Q

what are the portions of the colon?

A

ascending
transverse
descending

26
Q

what is known as bands/taenia?

A

longitudinal smooth muscle cords on the caecum and segments of the colon.

27
Q

Are their bands/taenia in the small intestine?

A

no

28
Q

what are sacculations/haustra?

A

series of pouches in the caecum and ventral colon formed by the segments of taenia

29
Q

list the order in which the large intestine goes

A

Caecum (body, apex, base)
Ascending colon:
RVC
sternal flexure
LVC
pelvic flexure
LDC
diaphragmatic flexure
RDC
transverse colon
descending colon

30
Q

how many bands/teania does each part of the large intestine have?

A

caecum - 4
RVC- 4
sternal flexure- 4
LVC- 1
Pelvic flexure- 1
LDC- 1
Diaphragmatic flexure-3
RDC- 3
transverse colon- 2
descending colon- 2

31
Q

right side of the horse

A
  • caecum
  • RVC
  • RDC
32
Q

left side of horse

A
  • most of small intestine is on left dorsal side
  • LVC
  • LDC
33
Q

Possible sites for obstruction in a horse?

A
  • pe;vic flexure
  • transverse colon
  • descending colon
  • caecum
34
Q

topographical location of the stomach

A

in the cranial part of the abdominal cavity - left of median plane

S + F 2 (30 decks)

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