Nokea
Absorption of digested food chiefly occurs in-
- A. Stomach
- B. Colon
- C. Small Intestine
- D. Large Intestine
Correct Answer: C
Rationale: The small intestine is the primary site for nutrient absorption due to its large surface area.
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Amylase enzyme acts on starch and convert it into-
- A. Maltose
- B. Glucose
- C. Fructose
- D. Galactose
Correct Answer: A
Rationale: Amylase breaks down starch into maltose, a disaccharide.
In congenital megacolon or Chagas' disease the following is affected:
- A. Muscularis mucosa.
- B. Intestinal lining epithelium
- C. Nerve plexuses of GIT resulting in disturbances in digestive tract motility with dilatation in some areas.
- D. Mucosal glands.
Correct Answer: C
Rationale: Both conditions affect the enteric nerve plexuses (e.g., Auerbach's and Meissner's), leading to motility issues like dilatation.
Which is the longest organ of digestive system in human body?
- A. Pancreatic duct
- B. Small intestine
- C. Large intestine
- D. Esophagus
Correct Answer: B
Rationale: The small intestine is the longest part of the digestive system, measuring about 7 meters (22 feet). Its main functions are to complete the digestion of food and to absorb nutrients.
Chymotrypsin is-
- A. Proteolytic enzyme
- B. Fat digestive enzyme
- C. Vitamin
- D. Hormone
Correct Answer: A
Rationale: Chymotrypsin is a proteolytic enzyme secreted by the pancreas.
Into which tubes do the nephrons drain?
- A. Proximal convoluted tubule
- B. Collecting duct
- C. Distal convoluted
- D. Ureter
Correct Answer: B
Rationale: Nephrons drain into collecting ducts, which lead to the ureter.