Nokea
Kupffer's cells are found in ______________.
- A. Liver.
- B. Pancreas.
- C. Small intestine.
- D. Large intestine.
Correct Answer: A
Rationale: Kupffer cells are specialized macrophages located in the liver, where they play a role in filtering blood and immune response.
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If for some reason the parietal cells of the gut epithelium become partially nonfunctional, what is likely to happen?
- A. The pH of stomach will fall abruptly
- B. Steapsin will be more effective
- C. Proteins will not be adequately hydrolysed by pepsin into proteoses and peptones
- D. The pancreatic enzymes and specially the trypsin and lipase will not work efficiently
Correct Answer: C
Rationale: Parietal cells secrete HCl; if nonfunctional, the stomach pH rises, reducing pepsin's protein digestion efficiency.
Lipase breaks down molecules of fat into what?
- A. Fatty acids and sugars
- B. Fatty acids and glycerol
- C. Fatty acids and amino acids
- D. Fatty acids
Correct Answer: B
Rationale: Lipase hydrolyzes triglycerides into fatty acids and glycerol, which are then absorbed.
The greater omentum does not participate in:
- A. secretion of enzymes
- B. support and cushioning of the viscera
- C. storage of lipids
- D. protection against the spread of infection
Correct Answer: A
Rationale: The greater omentum provides structural support, lipid storage, and protection against infection spread, but it does not secrete enzymes.
Which of the following cells secrete pepsinogen?
- A. Parietal cells
- B. Alpha cells
- C. Chief cells
- D. Stem cells
Correct Answer: C
Rationale: Chief cells in the stomach are responsible for secreting pepsinogen, which is then activated to pepsin by the acidic environment created by HCl.
The greater omentum does not participate in:
- A. secretion of enzymes
- B. support and cushioning of the viscera
- C. storage of lipids
- D. protection against the spread of infection
Correct Answer: A
Rationale: The greater omentum provides structural support, lipid storage, and protection against infection spread, but it does not secrete enzymes.