Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Physiology > GI: Gastric Secretions > Flashcards

GI: Gastric Secretions Flashcards

1
Q

Parietal cells (oxyntic) secrete?

A 
Gastric Acid (HCL)
Intrinsic Factor (IF)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Chief cells secrete?

A

Pepsinogen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Mucous cells secrete?

A

Mucus

Bicarbonate (HCO3-)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

G cells secrete?

A

Gastrin

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Cells of the Body and Fundus?

A 
Parietal cells (HCl, IF)
Chief cells (Pepsinogen)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Cells of the Entire Stomach (particularly Antrum)?

A

Mucus cells (Mucus, Bicarbonate)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Cells of the Antrum and Duodenum?

A

G cells (Gastrin)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What does Gastric Acid (HCl) do?

A

Aids in digestion
Activates Pepsinogen into Pepsin
Kills pathogens

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What does Intrinsic factor (IF) do?

A

Binds to Vit. B12

–> Leads to its uptake in the Ileum

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What does Pepsinogen do?

A

Zymogen for Pepsin

Digests protein at a pH (1.0 - 3.0)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What does Mucus do?

A

Protects Mucosa from Acidic environment and Pepsin

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What does Bicarbonate (HCO3-) do?

A

Neutralizes acid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What does Gastrin do?

A

Increases secretion of H+, Pepsinogen, Histamine
Trophic on Gastric mucosa
Increases Gastric motility

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What regulates Gastric Acid (HCl)?

A

Stimulus: Gastrin, ACh (Vagus), Histamine
Inhibits: Low pH, Prostaglandins, GIP secretion ( - fb), Somatostatin

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What regulates Intrinsic Factor (IF)?

A

Stimulus: Gastrin, ACh (Vagus), Histamine
Inhibits: Low pH, Prostaglandins, GIP secretion ( - fb), Somatostatin

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What regulates Pepsinogen?

A

Stimulus: ACh (Vagus), Increased local H+
Inhibits: Somatostatin

17
Q

What regulates Mucus?

A

Stimulus: ACh (Vagus)
Inhibits: None

18
Q

What regulates Bicarbonate (HCO3-)?

A

Stimulus: ACh (Vagus)
Inhibits: None

19
Q

What regulates Gastrin?

A

Stimulus: Small peptides, Amino acids, Ca++ in gastric lumen, GRP (Vagus), Gastric distention
Inhibits: Increase H+ in the Gastric antrum

Physiology (22 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions