Nokea
The juxtaglomerular cells secrete what hormone?
- A. Renin
- B. ADH
- C. Angiotensin
- D. Adrenalin
Correct Answer: A
Rationale: Juxtaglomerular cells secrete renin to regulate blood pressure and filtration.
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Which of the given enzymes is responsible for the digestion of milk protein?
- A. Erepsin
- B. Trypsin
- C. Pepsin
- D. Rennin
Correct Answer: D
Rationale: Rennin is responsible for the digestion of milk protein. Rennin is present in the human body in its inactive form called prorenin. When we consume milk, it reacts with the hydrochloric acid present in the stomach. Hydrochloric acid activates the inert prorenin and converts it into active Rennin.
Besides carbohydrates, proteins, fats, vitamins and minerals, what other nutrient does your body need for life?
- A. DNA
- B. chlorophyll
- C. water
- D. none of the above
Correct Answer: C
Rationale: Water is an essential nutrient required for all bodily functions.
Food and chyme are pushed through the digestive system by:
- A. ingestion
- B. mastication
- C. assimilation
- D. peristalsis
Correct Answer: D
Rationale: Peristalsis refers to the rhythmic contractions of smooth muscle that propel food and chyme through the digestive tract.
Amino acids are absorbed in-
- A. Blood capillaries of villi
- B. Wall of rectum
- C. Lacteals and blood capillaries of villi
- D. Lacteals of villi
Correct Answer: A
Rationale: Amino acids are absorbed into the blood capillaries of the villi in the small intestine.
Oxyntic (parietal) cells show the following EXCEPT:
- A. Rich in rER
- B. Intracellular C shaped canaliculi
- C. Numerous mitochondria & actin filaments
- D. Tubulovesicular system
Correct Answer: A
Rationale: Parietal cells are rich in mitochondria for energy, not rER, which is more prominent in chief cells.