Nokea
Blood from the intestines travels to the liver via the:
- A. hepatic artery
- B. mesenteric artery
- C. hepatic vein
- D. hepatic portal vein
Correct Answer: D
Rationale: The hepatic portal vein carries nutrient-rich blood from the intestines to the liver for processing before it enters systemic circulation.
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If the kidney is damaged it may result in reduced erythrocytes. Why?
- A. Kidney makes erythropoietin. If it is damaged the hormone production decreases and therefore erythrocyte production decreases
- B. The kidney stimulates iron uptake. If it is damaged the iron levels decrease and therefore erythrocyte production decreases
- C. The kidney maintains the health of erythrocytes so if it is damaged they die more quickly
- D. The injured kidney needs erythrocytes to repair itself they therefore get used up more quickly
Correct Answer: A
Rationale: Kidney damage reduces erythropoietin, a hormone that stimulates red blood cell production.
The enzyme trypsinogen is secreted from-
- A. Duodenum
- B. Pancreas
- C. Liver
- D. Stomach
Correct Answer: B
Rationale: Trypsinogen is secreted by the pancreas and activated to trypsin in the duodenum.
Where are the baroreceptors (measure blood pressure)?
- A. Lungs
- B. Heart muscle
- C. Hypothalamus
- D. Aortic arch
Correct Answer: D
Rationale: Baroreceptors in the aortic arch and carotid sinus detect blood pressure changes.
Endothelial cells of liver sinusoids, the following is true except:
- A. Lie on a discontinuous basal lamina
- B. Separated from hepatocytes by space of Disse
- C. The underlying space of Disse contain red blood cells
- D. The fenestra on its surface are collected at areas called sieve plates
Correct Answer: C
Rationale: The space of Disse contains plasma and microvilli, not red blood cells, which remain in the sinusoidal lumen.
Dietary fibres are very much required in our daily food, so as to?
- A. To provide extra protein
- B. To balance the insulin secreted by pancreas
- C. To help our body get rid of undigested food
- D. To decrease tiredness
Correct Answer: C
Rationale: Dietary fiber aids in digestion by adding bulk to stool and helping the body eliminate undigested food, promoting regular bowel movements.