Nokea
Which organ listed below does not belong in digestive system?
- A. liver
- B. spleen
- C. tongue
- D. stomach
Correct Answer: B
Rationale: The spleen is part of the lymphatic and immune systems, not the digestive system.
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Peristalsis moves food material:
- A. in the stomach and small intestine only
- B. in the small and large intestines only
- C. in the stomach and small and large intestines only
- D. from the pharynx to the anal canal
Correct Answer: D
Rationale: Peristalsis is a wave-like muscle contraction that moves food material through the entire gastrointestinal tract.
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 following cells are involved in lipid digestion & absorption EXCEPT:
- A. Parotid acini
- B. Liver cells (hepatocytes)
- C. Pancreatic acini
- D. Chief cells of fundic glands
Correct Answer: A
Rationale: Parotid acini produce saliva, which begins carbohydrate digestion, not lipid digestion; hepatocytes and pancreatic acini produce bile and lipase for lipids.
How much of your blood passes through your kidneys each day?
- A. half of it
- B. none of it
- C. all of it
- D. one-quarter of it
Correct Answer: C
Rationale: All of your blood is filtered by the kidneys multiple times daily to remove wastes.
How much of your blood passes through your kidneys each day?
- A. half of it
- B. none of it
- C. all of it
- D. one-quarter of it
Correct Answer: C
Rationale: All of your blood is filtered by the kidneys multiple times daily to remove wastes.