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Animal Anatomy > Abdominal Wall and Peritoneal Structures > Flashcards

Abdominal Wall and Peritoneal Structures Flashcards

1
Q

What are the muscle layers of the abdomen? (superficial to deep)

A

External abdominal oblique m.
Internal abdominal oblique m.
Rectus abdominis m.

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2
Q

Which muscle does the rectus sheath cover?

A

Rectus abdominus

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3
Q

What is the linea alba?

A

midventral raphe; continuous with the prepubic tendon.

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4
Q

What serous membranes envelop the organs of the abdomen?

A

peritoneum

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5
Q

What membrane are abdominal organs lined with?

A

Visceral peritoneum

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6
Q

What organ is retroperitoneal?

A

Kidneys because they reside outside of the abdominopelvic cavity

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7
Q

What are the ways fold in peritoneum can be named?

A

Omenta
Mesenteries
Ligaments

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8
Q

What and where is the greater omentum?

A

Visceral pleura
attaches to the greater curvature of the stomach to dorsal body wall
Encompasses left lobe of pancreas

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9
Q

Where is the lesser omentum?

A

Connects the lesser curvature of the stomach to the hilus of the liver.

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10
Q

What is the purpose of the mesentery?

A

Suspends the intestines from body wall, an contains neurovascular and lymphatic structures.

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11
Q

What connects the mesentery to the dorsal abdominal wall?

A

root of the mesentery

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12
Q

what is the inguinal canal?

A

natural slit between the abdominal muscles

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13
Q

What peritoneum extends through the inguinal canal?

A

Male: vaginal tunic (spermatic cord)
Female: Vaginal process

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14
Q

What is the pararectal fossa?

A

pouch between the dorsal body wall and rectum

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15
Q

What is Rectogenital fossa?

A

pouch between rectum and reproductive organs

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16
Q

What is vesiculogenital pouch?

A

pouch between reproductive organs and urinary bladder

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17
Q

What is pubovesicular pouch?

A

pouch between urinary bladder and ventral abdomen

18
Q

Where does the esophagus run?

A

through thorax within the mediastinum and to the abdomen via the esophageal hiatus

19
Q

Where does the liver occupy?

A

caudal diaphragm
cranial stomach

20
Q

Where does the esophagus enter the stomach?

A

At the cardia of the stomach

21
Q

after ingesta passes through the fundus of the stomach, where does it exit?

A

The pylorus.

22
Q

What regulates ingesta movement into the duodenum?

A

Pyloric sphincter

23
Q

what is the duodenum?

A

Proximal part of small intestine where bile from gallbladder and enzymes from pancreas

24
Q

How is the spleen attached to the stomach?

A

gastrosplenic ligament

25
Q

After the duodenum, where does ingesta go?

A

The jejunum

26
Q

What is the longest portion of the small intestine?

A

The jejunum

27
Q

what is the short termination of the small intestine?

A

Ileum

28
Q

What is found at the junction of the ileum and the colon?

A

The cecum

29
Q

What separates the non-glandular and glandular portions of the equine stomach?

A

Margo plicatus

30
Q

What prevents a horse from vomiting?

A

Sharp angle of the esophagus and well developed cardiac sphincter.

31
Q

What studied animal has no gallbladder?

A

Horse

32
Q

Why is the cecum of the horse larger?

A

modified to allow fermentation

33
Q

What is the colon designed to do in the horse?

A

Fluid absorption

34
Q

WHat ligament is special to the horse?

A

Nephrosplenic ligament;
Ligament between spleen and left kidney

35
Q

What is the largest chamber of the ruminant stomach?

A

The rumen

36
Q

What chamber of the ruminant stomach gives a shag like carpet?

A

The rumen

37
Q

What chamber lies cranial to rumen? What appearacne does it give off?

A

The reticulum
Honeycomb

38
Q

Where is the omasum located?

A

right of rumen and reticulum
with large sheets of mucosae aka laminae

39
Q

What does the omasum do?

A

reabsorption water

40
Q

What allows milk to skip the chambers straight to omasum?

A

The milk groove

41
Q

What is the only glandular portion of the ruminant stomach?

A

abomasum

42
Q

Where are the small and large intestines found in a ruminant?

A

Right flank region

Animal Anatomy (5 decks)

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