Glucose and amino acids are reabsorbed from glomerular filtrate by the___________.
glomerular capillaries
proximal convoluted tubule
renal corpuscle
distal convoluted tubule
The Correct Answer is B
A. Glomerular capillaries are involved in the filtration of blood to form the glomerular filtrate, not in the reabsorption of glucose and amino acids.
B. Proximal convoluted tubule is where the majority of glucose and amino acids are reabsorbed from the glomerular filtrate back into the bloodstream.
C. Renal corpuscle consists of the glomerulus and Bowman's capsule and is involved in the filtration process, not in reabsorption.
D. Distal convoluted tubule is involved in the fine-tuning of electrolyte and acid-base balance, not in the primary reabsorption of glucose and amino acids.
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Related Questions
Correct Answer is C
Explanation
A. Tubuloglomerular feedback involves the macula densa sensing changes in sodium chloride concentration and adjusting the glomerular filtration rate (GFR) via the juxtaglomerular apparatus.
B. Renal autoregulation includes mechanisms like the myogenic mechanism and tubuloglomerular feedback that maintain stable GFR despite blood pressure changes. This option is too broad and not specific to the mechanism described.
C. The myogenic mechanism refers to the smooth muscle's tendency to contract when stretched, helping to stabilize GFR by adjusting the diameter of the afferent arterioles. This is the correct answer.
D. Sympathetic control influences renal blood flow and GFR through hormonal and nervous system regulation, but it is not the specific mechanism described in the question.
Correct Answer is True
Explanation
Pancreatic juice and bile are indeed secreted into the duodenum. Pancreatic juice, which contains digestive enzymes, is released from the pancreas, while bile, which emulsifies fats, is secreted from the liver and stored in the gallbladder before being released into the duodenum.
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