Nokea
Amylase in saliva initiates digestion of:
- A. lipids
- B. proteins
- C. fats
- D. carbohydrates
Correct Answer: D
Rationale: Salivary amylase breaks down carbohydrates into simpler sugars.
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Which organ in the digestive system absorbs the most water from food?
- A. esophagus
- B. large intestine
- C. small intestine
- D. stomach
Correct Answer: B
Rationale: The large intestine absorbs the most water from food, turning chyme into solid waste.
The glucose is converted into glycogen in liver and stored in :
- A. Liver
- B. Liver and muscles
- C. Liver and spleen
- D. Spleen and muscles
Correct Answer: B
Rationale: Glucose is stored as glycogen in both the liver and skeletal muscles.
Sweating during exercise will cause loss of water to the body. It is important to replace the water or could set in:
- A. leukemia
- B. dehydration
- C. heart disease
- D. diabetes
Correct Answer: B
Rationale: Dehydration occurs when water loss exceeds intake, a common risk during exercise.
Which of the following combinations will lead to the highest level of acid secretion through potentiation? (Potentiation refers to a post-receptor interaction where the response obtained is greater than the sum of each individual agent acting alone.)
- A. Vagal input, histamine, gastrin
- B. Vagal input, histamine, secretin
- C. Histamine, gastrin, secretin
- D. Gastrin, vagal input, secretin
Correct Answer: A
Rationale: Vagal input, histamine, and gastrin all stimulate parietal cells synergistically (potentiation), maximizing acid secretion, while secretin inhibits it.
During prolonged starvation, body derives nutrition from storage of -
- A. Liver and adipose tissue
- B. Spleen
- C. Liver and lungs
- D. Subcutaneous fat and Pancreas
Correct Answer: A
Rationale: During starvation, the body uses glycogen from the liver and fats from adipose tissue.