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Anatomy > Horse Abdomen Lab > Flashcards

Horse Abdomen Lab Flashcards

1
Q

What is the heaveline

A

Musculoaponeurotic jxn of the EAO

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2
Q

Purpose and location of tunica flava

A

Adhered to EAO and helps carry weight of viscera.

-Needs to be carefully sutured when closing abdomen

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3
Q

Most cranial extent of the diaphragm

A

Olecranon and lower end of 6th rib

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4
Q

T/F Liver reaches floor of abdomen

A

F

Does not

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5
Q

T/F In normal adult, liver is located outside of thoracic cage

A

F

Entirely inside

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6
Q

T/F In foal, liver can extend beyond thoracic cage

A

T

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7
Q

T/F Lung overlies liver on both sides of the body

A

T

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8
Q

T/F Bulk of liver is on L side from 7-15th IC space

A

F

Right side

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9
Q

How can you decided texture and size of liver?

A

Ultrasonography

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10
Q

What can herniate through the epiploic foramen?

A

Loop of jejunum

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11
Q

How can you differentiate descending colon from jejunum in exploaratory celictomy?

A

Prominent free band and distinct sacculations

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12
Q

Where is the base of the cecum normally auscultated?

A

Right paralumbar fossa

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13
Q

Small colon can be auscultated?

A

Left paralumbar fossa

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14
Q

Neohrosplenic entrapment

A

Dorsal displacement of left colon

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15
Q

Explain dorsal displacement of left colon

A

Shifting of left dorsal and ventral colons into dorsal end of spleen and left kidney.
-Severe colic

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16
Q

Pain in abdomen

A

Colic

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17
Q

Ways to get colic (2)

A

Obstruction of flow in jejunum
-Twist on itself and onto epiploic foramen

Ileum can be incacerated in cecum through ileal orifice

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18
Q

4 potential sites of impaction

A

1-cecocolic jxn
2-Pelvic flexure
3-Jxn btw R dorsal and transverse colons
4-Ileum into base of cecum-ileal impaction

19
Q

Where is cardia and importance

A

Opposite of 11th rib

Do not pass nasogastric tube beyond 11th rib

20
Q

Where is stomach

A

L flank btw liver cranially and spleen caudally and entirely in thoracic cage

21
Q

Why can horse not vomit

A

Acute angle esophagus enters stomach

Thick cardiac sphincter

22
Q

Inflammation of intestine

-Clinical importance

A

Enteritis

-May cause swelling and blockage of orifices of bile and pancreatic ducts in duodenum causing stasis and jaundice

23
Q

What are mesenteric arteries vulnerable to

A

Strongylus vulgaris larvae that migrate from intestine to aorta in walls of arteries supplying gut
-Can cause verminous aneurysm

24
Q

The cecum may allow up to ____ to enter its lumen

A

4 m of ileum + jejunum via intussusception (one segment of intestine telescoping into adjacent segment)

25
Q

During ileal impaction what will you see in surgery

A

You will NOT see ileocecal fold due to intussusception

26
Q

Fiber direction of EAO

A

Caudoventral

27
Q

What forms superficial inguinal ring

A

Slit in aponeurosis of EAO

28
Q

What forms inguinal ligament

A

Caudal edge of aponeurosis of EAO

29
Q

Fiber direction of IAO

A

Cranioventral

30
Q

What originates from caudal border of IAO

A

Cremaster m

31
Q

Fiber direction of transversus abdominis

A

Dorsoventral

32
Q

Fiber direction of rectus abdominis

A

Craniocaudal

33
Q

Insertion of rectus abdominis

A

Prepubic tendon

34
Q

Point of insertion for aponeurosis of abdominal m

A

Linea alba

35
Q

T/F Gastrosplenic ligament is part of the lesser omentum

A

F

Greater omentum

36
Q

Most of equine liver lies

A

R of median plane

37
Q

What separtes glandular from nonglandular stomach

A

Margo plicatus

38
Q

What opens at major and minor duodenal papilla?

A

Bile and major pancreatic duct opens at major duodenal papilla

Accessory pancreatic duct opens at minor duodenal papilla

39
Q

How to differentiate jejunum from ileum

A

Ileum has thicker wall and firmer consistency

40
Q

Describe cecum

  • Bands/Sacculations
  • Position
  • Folds and orifices
A

4 bands and sacculated

Base is at R paralumbar fossa (puncture for gas relief)
Apex is on abdominal floor near xiphoid cartilage

Cecocolic fold=connects cecum to R ventral colon
Ileocecal fold=connects ileum to cecum
Cecocolic orifice=opening into ascending (R ventral) colon

41
Q

Large colon includes

A

Ascending and transverse

42
Q

Give route of large colon

A

Right ventral->sternal flexure->left ventral->pelvic flexure->Left dorsal-»diaphragmatic flexure->Right dorsal->transverse

43
Q

Give bands and sacculations

A 
Cecum= 4bands +sac
R ventral colon= 4 bands +sac
L ventral colon=4 bands -sac
L dorsal colon=1 band -sac
R dorsal colon=3 band -sac
Transverse=2 band
Descending=2 band
44
Q

What wraps around caudal vena cava?

A

Accessory lobe of R lung

Anatomy (14 decks)

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