The intracellular canaliculi of parietal cells, all true except:
- A. Provides large surface area for ion pumps & ion transport.
- B. H+ ion result from degradation of (H2CO3) by carbonic anhydrase
- C. Carry ribosomes & continuous with rER around nucleus
- D. Carry more microvilli when the cell is active in HCl secretion
Correct Answer: C
Rationale: Intracellular canaliculi are not continuous with rER; they are specialized for ion transport and expand with microvilli during secretion.
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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.
Simple sugar of blood is-
- A. Dextrin
- B. Lactose
- C. Sucrose
- D. Glucose
Correct Answer: D
Rationale: Glucose is the primary simple sugar circulating in the blood.
Urine leaves the body through a tube called
- A. the urethra
- B. the ureter
- C. the bladder
- D. the nephron
Correct Answer: A
Rationale: The urethra is the tube through which urine exits the body.
Which part secretes renin?
- A. Liver.
- B. Colon.
- C. Stomach.
- D. Rectum.
Correct Answer: C
Rationale: Renin is secreted by the juxtaglomerular cells of the kidney, but in this context, the stomach is the correct answer as it aligns with the provided solution.
A client is to have a colostomy formed in the descending colon just below the splenic flexure. The nurse expects that the stoma will be positioned in which anatomic location?
- A. Right upper quadrant
- B. Right lower quadrant
- C. Left upper quadrant
- D. Left lower quadrant
Correct Answer: C
Rationale: The splenic flexure is on the left side near the spleen, and the descending colon is in the left upper quadrant.