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BIOL261 - Chapter 21 (The Digestive System)

Terms in this set (10)

Which is an accessory organ of digestion?
A. Colon
B. Pancreas
C. Esophagus
D. Spleen
E. Stomach
Pancreas
The __________ is a significant site of absorption of water and electrolytes, but NOT of nutrients.
A. Small intestines
B. Mouth
C. Large intestines
D. Stomach
Large intestine
Secretion refers to the:
A. Breakdown of food into particles small enough to cross epithelial cells
B. Release of substance into the lumen of the gut
C. Input of food into the digestive track
D. Movement of nutrients from the lumen into the epithelial cells
Release of substance into the lumen of the gut
Mucus in the digestive track functions in:
A. Protection, lubrication, and enzyme activation
B. Protection only
C. Lubrication only
D. Enzyme activation only
E. Protection and lubrication
Protection and lubrication
Nutrient absorption occurs primarily in the:
A. Large intestines
B. Stomach
C. Mouth
D. Small intestines
Small intestines
________________ involve short segments of intestine that alternately contract and relax which mixes food in the gut.
A. Slow wave contractions
B. Segmental contractions
C. Degulitition
D. Peristaltic contractions
Segmental contractions
A hormone secreted by cells in the stomach.
A. Gastric inhibitory protein
B. Secretin
C. Motilin
D. Gastrin
Gastrin
A hormone that stimulate insulin release:
A. Gastric inhibitory protein
B. Motilin
C. Secretin
D. Gastrin
Gastric inhibitory protein
Carbohydrate digestion begins here.
A. Stomach
B. Large intestine
C. Mouth
D. Small intestine
Mouth
Chemical digestion of food starts in the _______________.
A. Mouth
B. Small intestines
C. Large intestines
D. Stomach
Mouth
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