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Tut 2, Hormonal regulation of GIT functions, Physiology

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1)Hormonal regulation of gastrointestinal tract functions
1.Hormones of GIT are secreted from:
a. Pituitary gland  
b. Suprarenal gland
c. Entero endocrine cells

2.GIT hormones are classified according to:-
a. Function 
 b.structure
c. Both

3.Gastrin family include all of the following except:-
a. Gastrin
b. CCK
c. VIP

4.All the following are true regarding Gastrin except:-
A-Has 3 forms
B-Secreted from stomach
C-Cause contractions of lower osophygeal  sphincter
D-Its  main action is increasing HCL

5.Which of the following is true regarding CCK:-
A-Formed of 45 A.A
B-Has +ve feedback
C-Its main stimulation is long chain fatty acids
D-B&C

6.Enzymatic pancreatic secretions is:-
A-Rich in HCO3
B-Rich in enzymes
C-Large in volume

7.The main stimulation of secrtin  secretion is:-
A-Long chain fatty acids 
B-PH<4.5
C-Protein digistive products

8.About action of VIP which is true:-
A-V.D of intestinal B.V
B-Inhibition of gastric secretion
C-Relaxation of GIT smooth muscles
D-All are true

9.Which of the following hormones increase aqueous pancreatic secretions:-
a. CCK
b. VIP
c. GIP
d. Secretin

10.Which of the following hormones is secreted by I cells:-
a. Gastrin 
b.CCK
c.VIP
d.GIP

Answers:-

1-C
2-B
3-C
4-D
5-D
6-B
7.  B
8.  D
9.  D
10-B



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