Chapter C8. La digestione e la nutrizione #108761

How animals acquire and process food

Animals that feed discontinuously

A:

have digestive tracts that permit storage.

B:

are always filter feeders.

C:

exhibit extremely rapid digestion.

D:

have a nonspecialized digestive tract.

E:

usually eat only meat.

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How animals acquire and process food

The digestive system

A:

breaks down food into usable nutrients.

B:

absorbs nutrients.

C:

eliminates waste.

D:

All of these are correct.

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Mammalian organs of digestion

The stomach

A:

is lined with a thick layer of mucus.

B:

contains sphincter glands.

C:

has a pH of about 6.

D:

digests carbohydrates.

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Pancreas and liver are vital organs

Which of these is not a proper contrast between the pancreas and the liver?

A:

secretes insulin—secretes bile

B:

sends digestive juices to the duodenum—sends toxins to the small intestine

C:

long and flat—composed of lobules

D:

sends a duct directly to the duodenum—first sends a duct to the gallbladder

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Mammalian organs of digestion

Which of these does not occur in the mouth?

A:

amylase digests protein

B:

salivary glands secrete juices into the mouth

C:

chewing is mechanical digestion

D:

preparation for swallowing occurs

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Mammalian organs of digestion

Bile

A:

is an important enzyme for the digestion of fats.

B:

cannot be stored.

C:

is made by the gallbladder.

D:

emulsifies fat.

E:

All of these are correct.

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Pancreas and liver are vital organs

Which organ has both an exocrine and an endocrine function?

A:

liver

B:

esophagus

C:

pancreas

D:

cecum

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Mammalian organs of digestion

The vermiform appendix

A:

is connected to the small intestine at the junction of the large intestine.

B:

plays a role in fighting infection.

C:

Both of these are correct.

D:

Neither of these is correct.

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Mammalian organs of digestion

Peristalsis occurs

A:

from the mouth to the small intestine.

B:

from the beginning of the esophagus to the anus.

C:

only in the stomach.

D:

only in the small and large intestines.

E:

only in the esophagus and stomach.

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Mammalian organs of digestion

Which of these is not a proper contrast between the stomach and the small intestine?

A:

digests protein—digests all large biomolecules

B:

stores food—absorbs food

C:

is very long—expands

D:

is connected to the esophagus—is connected to the large intestine

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