MCQs on Gastrointestinal Tract and Liver Physiology Part 3

# Parietal cells of gastric mucosa secrete :
A. HCl
B. Gastrin
C. Mucin
D. All of the above

# Most potent stimulus for secretin is :
A. Dilatation of intestine
B. Acid chyme
C. Protein
D. Fat

# The only sugar absorbed in the intestine against a concentration gradient is :
A. Xylose
B. Mannose
C. Glucose
D. Galactose

# Cephalic phase of Gastric secretion is mediated by :
A. Neurohormones
B. Vagus
C. Hormones
D. Gastrin

# Secretin does not cause :
A. Bicarbonate secretion
B. Augment the action of CCK
C. Contraction of pyloric sphincter
D. Gastric secretion increase
# The final sugars in intestinal chyme are :
A. Glucose and fructose
B. Ribose and mannose
C. Ribose and xylulose
D. Xylulose and fructose

# Gastric secretion is stimulated by all of the following except :
A. Secretin
B. Gastric distension
C. Gastrin
D. Vagal stimulus

# Peristalsis in the gut is due to :
A. Pre-peristaltic intestinal secretion
B. Mechanical distension
C. Simultaneous action of circular and longitudinal mnuscles
D. Extrinsic nervous influence

# Maximum absorption of bile occurs at :
A. Jejunum
B. Duodenum
C. Ileum
D. Colon

# Gall bladder contraction is controlled primarily by :
A. Pancreatozymine
B. Cholecystokinin- pancreozymin
C. Secretin
D. Glucagon

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