Which part of the nephron from the following image is the main site of secretion for creatinine?
Proximal convoluted tubule
Distal convoluted tubule
Collecting duct
loop of Henle
The Correct Answer is A
A. Proximal convoluted tubule: The proximal convoluted tubule is the main site of creatinine secretion as well as the reabsorption of nutrients and water.
B. Distal convoluted tubule: While secretion occurs here, it is not the main site for creatinine; this site mainly adjusts the final urine concentration.
C. Collecting duct: This part primarily deals with water and electrolyte balance but is not the main site for creatinine secretion.
D. Loop of Henle: This structure plays a key role in water and sodium balance but does not play a significant role in creatinine secretion.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Rugae: The rugae are folds in the stomach lining that expand when the stomach fills with food, increasing surface area for digestion.
B. Microvilli: Microvilli increase surface area in the small intestine, not the stomach.
C. Peritoneum: The peritoneum is a membrane surrounding the abdominal cavity, not involved in surface area expansion of the stomach.
D. Muscularis: The muscularis is the muscle layer responsible for stomach contractions but does not increase surface area.
Correct Answer is D
Explanation
A. Liver: The liver plays a role in detoxification and metabolism but is not involved in lymphocyte production.
B. Stomach: The stomach is part of the digestive system, not the immune system.
C. Small Intestine: The small intestine is involved in nutrient absorption and contains some lymphoid tissue (Peyer's patches) but is not the main site of lymphocyte production.
D. Thymus: The thymus is the organ where T-lymphocytes mature and are essential for the immune response.
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