Digestive System Flashcards

1
Q

What is the mucosa?

A

The innermost later of the digestive tract. Consists of 3 layers of its own- inner layer of epithelium, loose connective tissue, and smooth muscle.

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2
Q

What is the submucosa?

A

Thicker layer of connective tissue. Contains glands, vessels, lymhatic vessels, and nerves.

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3
Q

What is the muscularis?

A

Two layers of smooth muscle. The inner layer encircles the tract while the outer layer runs longitudinally.

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4
Q

What is the serosa?

A

The outmost layer covers the portion of the digestive tract within the peritoneal cavity.

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5
Q

What is the Peritoneum?

A

It suspends the digestive organs within the abdominal cavity while anchoring them loosely to the abdominal wall.

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6
Q

What does saliva consist of?

A

Mostly water but also mucus, antibacterial compounds, electrolytes, and two digestive enzymes.

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7
Q

What is the pharynx?

A

A muscular tube divided into 3 regions: Nasopharynx, Oropharynx, and Laryngopharynx. Food moves through the oro and larynx.

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8
Q

What is the esophagus?

A

A muscular tube about 10 inches long connecting the pharynx to the stomach. Glands within secrete mucus that helps lubricate food bolus.

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9
Q

What is the stomach?

A

A muscular sac- primary function is to store food. Also prepares food for digestion.

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10
Q

What does the small intestine do?

A

Most chemical digestion and nutrient absorption occurs in the small intestine. Consists of duodenum, jejunum, and ilium.

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11
Q

What does the large intestine do?

A

Absorbs large amounts of water.

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12
Q

What is amalyse?

A

Hydrolyze polysaccharides into disaccarides

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13
Q

What is protease?

A

Enzymes working in the stomach and small intestine to break peptide bonds.

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14
Q

Which 2 glands help in digestion?

A

Liver and pancreas

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