ANIMAL NUTRITION AND DIGESTIVE SYSTEM 3 Flashcards

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1
Q

is the point of entry of food into the digestive system

A

Oral Cavity

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2
Q

is a watery substance produced in the mouths of many animals

A

Saliva

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3
Q

There are three major glands that secrete saliva

A

the parotid, the submandibular, and the sublingual

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4
Q

Saliva also contains an enzyme called ______ that begins the process of converting starches in the food into a disaccharide called ______

A

salivary amylase
maltose

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5
Q

Another enzyme called ______ is produced by the cells in the tongue

A

lipase

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6
Q

leads to the lungs

A

trachea

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7
Q

leads to the stomach

A

esophagus

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8
Q

The trachea has an opening called the

A

glottis

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9
Q

covered by a cartilaginous flap called the

A

epiglottis

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10
Q

When swallowing, the epiglottis _____ the glottis and food passes into the _______ and not the _________

A

closes
esophagus
trachea

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11
Q

a tubular organ that connects the mouth to the stomach.

A

esophagus

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12
Q

The smooth muscles of the esophagus undergo a series of wave like movements called _______ that push the food toward the stomach

A

peristalsis

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13
Q

The peristalsis wave is _______—it moves food from the mouth to the stomach, and reverse movement is not possible.

A

unidirectional

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14
Q

A ring-like muscle called a _______ forms valves in the digestive system.

A

sphincter

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15
Q

located at the stomach end of the esophagus.

A

gastro-esophageal sphincter

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