Nokea
A digestive enzyme, salivary amylase in the saliva begins digestion of-
- A. Starch
- B. Fiber
- C. Proteins
- D. Fats
Correct Answer: A
Rationale: Saliva contains the enzyme amylase that breaks some starches down into maltose and dextrin. Thus, digestion of food occurs within the mouth, even before the food reaches the stomach.
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By which process, most of glucose and amino acids are absorbed in the small intestine?
- A. Active transport
- B. Passive transport
- C. Osmosis
- D. Selective absorption
Correct Answer: A
Rationale: Glucose and amino acids are primarily absorbed via active transport in the small intestine.
Carcinoid tumor, Is tumor of:
- A. Parietal cells
- B. Enteroendocrine APUD cells
- C. Zymogen cell
- D. Paneth cells
Correct Answer: B
Rationale: Carcinoid tumors arise from enteroendocrine (APUD) cells, which secrete hormones like serotonin.
All about hepatocyte is true EXCEPT:
- A. Has 3 types of borders
- B. May be binucleated
- C. Secrete bile
- D. Has long microvilli forming brush border
Correct Answer: D
Rationale: Hepatocytes have microvilli facing the space of Disse, but not a brush border, which is characteristic of intestinal enterocytes.
Of the following, which organ does food NOT pass through?
- A. pancreas
- B. stomach
- C. mouth
- D. small intestine
Correct Answer: A
Rationale: Food does not pass through the pancreas; it produces digestive enzymes that aid digestion.
The nephron is surrounded by capillaries. What is their name?
- A. Multitubular capillaries
- B. Unitubular capillaries
- C. Peritubular capillaries
- D. Polytubular capillaries
Correct Answer: C
Rationale: Peritubular capillaries surround the nephron, facilitating reabsorption and secretion.