Stomach (9 questions on final) Flashcards Preview

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Flashcards in Stomach (9 questions on final) Deck (18)
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1
Q

3 functions of the stomach

A
  1. Continue digestion of carbs
  2. Storage PRIMARY FXN
  3. Some nutrient breakdown (primarily chemical, little physical)
2
Q

Surface epithelium of mucosa

A

Simple columnar

3
Q

Surface epithelium has 2 cell types. Tell me about them

A
  1. Surface mucous (surface lining)
    - function to produce thick visible mucus and secrete bicarbonate ions
  2. Regenerative cells @ the bases of pits
4
Q

In what layer do we find AVA (atriovenous anastomosis)?

A

Submucosa (highly vascular layer)

5
Q

What is the function of AVA in the submucosa?

A

To shut down activity and secretions FAST

6
Q

In what layer do we find submucosal (Meissner’s) plexus?

A

Submucosa.

Duh.

7
Q

Functions of Submucosal (Meissner’s plexus)

A
  1. To influence the mucosa

ie- secretion, blood flow, any limited muscle contrations

8
Q

3 muscle layers are possible in the muscularis externa. What are they?

Were are they especially present?

A
  1. Innermost OBLIQUE (not always present)
  2. Middle circular (well developed)
  3. Outer longitudinal (thin)

Especially between cardia region and greater curvature; all smooth m.

9
Q
The stomach is covered in 
A. Serosa
B. Adventitia
C. Both
D. Boom shaka la
A

A. Serosa

10
Q

Does the Cardiac region have chief cells?

A

No. No chief cells in the cardiac region. None.

11
Q

Another name for a gastric gland

A

zymogenic gland

12
Q

DNES cells aka ____________ are found in the _______ region of a gastric gland

A

enteroendocrine cells

Isthmus

13
Q

Name 3 types of DNES cells in the stomach

A

Type D
Type EC
Type G

14
Q

What do type G cells do (DNES cells)

A

produce gastrin which stimulates:

  • HCL and pepsinogen secretion
  • gastric motility
  • regenerative cells in body of stomach
15
Q

How long do neck cells in a gastric gland live?

A

6 days

16
Q

Neck mucous cells in the neck region of a gastric gland produce _________, which functions to __________

A

produce a soluble, less alkaline mucus, which functions to lubricate gastric contents

17
Q

The pyloric sphincter is

A

the anatomical sphincter between the pylorus of the stomach and the duodenum

18
Q

Characteristics of an anatomical sphincter

A
  1. Well developed inner circular layer of muscle in the ME

2. Inner circular layer in ME can be independently controlled