Nokea
Brunner's glands are located in :
- A. Oesophagus
- B. Duodenum
- C. Intestine
- D. Stomach
Correct Answer: B
Rationale: Brunner's glands are specifically found in the duodenum.
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The cells of the proximal convoluted tubule are specialised to absorb compounds back into the circulatory system. In what way?
- A. They have foot processes which wrap around the blood vessels
- B. They have pores to allow compounds through
- C. They have microvilli to increase surface area
- D. They have cilia to help the filtrate move through the tube
Correct Answer: C
Rationale: Microvilli increase the surface area for reabsorption in the proximal convoluted tubule.
The function of the parietal cells of the stomach is to:
- A. Secrete pepsinogen for protein digestion
- B. Secrete mucus for lubrication
- C. Secrete the hormone gastrin
- D. Produce intrinsic factor required for absorption of vitamin B12
Correct Answer: D
Rationale: Parietal cells produce intrinsic factor, essential for vitamin B12 absorption, and hydrochloric acid, not the other functions listed.
Substances which are not related with hepatic portal circulation :-
- A. Amino acid
- B. Fatty acid
- C. Glucose
- D. Electrolytes
Correct Answer: B
Rationale: Fatty acids are absorbed into lacteals and enter the lymphatic system, not the hepatic portal vein.
Which type of fat can cause heart disease if consumed in high quantities?
- A. carbohydrates
- B. saturated
- C. calories
- D. unsaturated
Correct Answer: B
Rationale: Saturated fats, when consumed excessively, can increase cholesterol levels, leading to heart disease.
The function of the parietal cells of the stomach is to:
- A. Secrete pepsinogen for protein digestion
- B. Secrete mucus for lubrication
- C. Secrete the hormone gastrin
- D. Produce intrinsic factor required for absorption of vitamin B12
Correct Answer: D
Rationale: Parietal cells produce intrinsic factor, essential for vitamin B12 absorption, and hydrochloric acid, not the other functions listed.