Nokea
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.
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Process of absorption of nutrients is carried out by
- A. Passive transport
- B. Facilitated transport
- C. Active transport
- D. All of the above
Correct Answer: D
Rationale: Nutrient absorption involves passive, facilitated, and active transport mechanisms.
Small finger-like projection, which produce numerous microscopic projections are supplied with a network of
- A. Blood capillaries and lacteal
- B. Blood capillaries only
- C. Lacteal only
- D. A large lymphoid vessel and valves
Correct Answer: A
Rationale: Villi contain blood capillaries and lacteals for absorbing nutrients like glucose and fats.
The nutrient that supplies bulk to help the movement of waste through the digestive system is
- A. protein
- B. vitamins
- C. minerals
- D. fibre
Correct Answer: D
Rationale: Fibre provides bulk and aids in the movement of waste through the digestive tract by promoting peristalsis.
Which of the following substances is considered inorganic?
- A. minerals
- B. fats
- C. carbohydrates
- D. proteins
Correct Answer: A
Rationale: Minerals are inorganic substances, unlike fats, carbohydrates, and proteins, which are organic.
The small intestine of a person contains a lower concentration of glucose than is present in the blood. The cells of the villi absorb glucose. By which process is the glucose absorbed?
- A. by active transport against the concentration gradient
- B. by active transport down the concentration gradient
- C. by diffusion against the concentration gradient
- D. by diffusion down the concentration gradient
Correct Answer: A
Rationale: Glucose absorption in the small intestine occurs through active transport, particularly when the concentration of glucose is higher in the blood than in the intestine. This requires energy to move glucose against its concentration gradient.