Large intestine Flashcards

1
Q

The Rectum is an

A

expandable organ for temporary storage of feces

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2
Q

The rectum forms last

A

15 cm (6 in.) of digestive tract

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3
Q

movement of fecal material into rectum triggers urge to defecate is in what place

A

The rectum

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4
Q

Last portion of the rectum

A

anal canal

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5
Q

anal columns

A

small longitudinal folds

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6
Q

Internal anal sphincter

A
  • Circular muscle layer of muscularis externa
  • Has smooth muscle cells, not under voluntary control
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7
Q

External anal sphincter

A

Encircles distal portion of anal canal
* A ring of skeletal muscle fibers, under voluntary control

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8
Q

Physiology of the Large Intestineis less than

A

10% of nutrient absorption occurs in large
intestine

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9
Q

Physiology of the Large Intestine prepares

A

fecal material for ejection from the body

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