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Bio 161: Basic A & P - 17 The Digestive System > Digestive Questions - 17.3 The Stomach > Flashcards

Digestive Questions - 17.3 The Stomach Flashcards

1
Q

What quadrant region does most of the stomach lie in?

A

Left upper

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2
Q

Digestion of protein in the body begins in the ____________.

A

Stomach

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3
Q

List the 4 regions of the stomach.

A
  • Cardiac
  • Fundus
  • Body
  • Pyloric
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4
Q

What region of the stomach does the bolus enter?

A

The cardiac

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5
Q

What region of the stomach lies against the diaphragm?

A

The Fundus

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6
Q

What region of the stomach is the largest?

A

The Body

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7
Q

What region of the stomach empties chyme into the duodenum of the small intestine?

A

The Pyloric

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8
Q

What valve regulates the amount of chyme flowing into the duodenum of the small intestine?

A

Pyloric sphincter

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9
Q

What is the function of rugae?

A

Allow Expansion of the stomach to accommodate large amounts of food.

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10
Q

The stomach wall has three layers of muscles instead of two as found in all other areas of the GI (digestive) tract. What does this allow the stomach to do?

A

Churn the stomach’s contents and to make it into chyme.

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11
Q

Why do the chief cells secrete an inactive digestive enzyme called pepsinogen?

A

The active enzyme called pepsin can actually digest the stomach’s own cells.

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12
Q

We learn only three (3) types of cells found in the gastric pits found in the stomach mucosal layer. Name them.

A
  • Mucous cells
  • Parietal cells
  • Chief cells
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13
Q

What is the name of the sphincter valve at the inferior portion of the stomach?

A

Pyloric Sphincter

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14
Q

What do parietal cells of the stomach secrete?

A
  • Hydrochloric acid
  • Intrinsic factor
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15
Q

What do the chief cells of the stomach secrete?

A

Pepsinogen

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16
Q

What do mucous cells of the stomach mucosa secrete?

A

Mucus

17
Q

In the stomach, HCL functions to activate __________ into pepsin.

A

Pepsinogen

18
Q

In the stomach, HCL kills _______________ as they enter with food and liquids.

A

Microorganisms such as bacteria

19
Q

Pepsin digests _______________ in the stomach.

A

Proteins

20
Q

A mechanical type of digestion called churning occurs in the stomach. This type of digestion is caused by the three (3) layers of smooth muscles in the ___________________ of the stomach wall.

A

Muscularis externa

21
Q

What is the precursor form of pepsin?

A

Pepsinogen

22
Q

The normal pH of chyme in the stomach is:

A

Acidic

23
Q

The mucosal layer of the stomach secretes mucus. What is the function of mucus in the stomach?

A

Protects mucosa from HCL and digestive enzymes.

24
Q

The pH of chyme must be __________________ in the duodenum of the small intestine. neutralized

A

Neutralized

Bio 161: Basic A & P - 17 The Digestive System (5 decks)

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