Nokea
The enzyme trypsinogen is secreted from-
- A. Duodenum
- B. Pancreas
- C. Liver
- D. Stomach
Correct Answer: B
Rationale: Trypsinogen is secreted by the pancreas and activated to trypsin in the duodenum.
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Which part secretes renin?
- A. Liver.
- B. Colon.
- C. Stomach.
- D. Rectum.
Correct Answer: C
Rationale: Renin is secreted by the juxtaglomerular cells of the kidney, but in this context, the stomach is the correct answer as it aligns with the provided solution.
Which enzyme helps break down fats in the digestive process?
- A. lipase
- B. pepsin
- C. papain
- D. amylase
Correct Answer: A
Rationale: Lipase is the enzyme responsible for breaking down fats into fatty acids and glycerol during digestion.
About esophagus, all are true EXCEPT:
- A. Lined by st sq epith
- B. Glands are present mainly in submucosa
- C. Muscularis externa are formed entirely of smooth muscles.
- D. Muscularis mucosa is well developed in the lower half
Correct Answer: C
Rationale: The muscularis externa of the esophagus transitions from skeletal muscle (upper third) to smooth muscle (lower third), not entirely smooth muscle.
When a person eats some egg white, protein and water enter the stomach. Which substances are found leaving the stomach and leaving the small intestine?
- A. leaving the stomach: amino acids and water, leaving the small intestine: amino acids and water
- B. leaving the stomach: fatty acids, glycerol, and water, leaving the small intestine: fatty acids, glycerol, and water
- C. leaving the stomach: protein and water, leaving the small intestine: fatty acids and glycerol
- D. leaving the stomach: protein, amino acids, and water, leaving the small intestine: water
Correct Answer: A
Rationale: Proteins are partially digested in the stomach and converted to amino acids in the small intestine.
A patient who has undergone gastrectomy (removal of the stomach) may suffer from:
- A. cirrhosis
- B. pernicious anemia
- C. gastric ulcer
- D. inability to digest fats
Correct Answer: B
Rationale: Gastrectomy can lead to pernicious anemia due to reduced intrinsic factor production, necessary for vitamin B12 absorption.