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Questions and Answers
What is the main factor controlling the amount of water gain?
What is the main factor controlling the amount of water gain?
- Antidiuretic hormone (ADH)
- Hypovolemia
- Thirst sensation (correct)
- Supra-optic nucleus
Where is Antidiuretic hormone (ADH) secreted from?
Where is Antidiuretic hormone (ADH) secreted from?
- Hypothalamus
- Osmoreceptor
- Posterior pituitary (correct)
- Supra-optic nucleus
What causes the reflex release of ADH?
What causes the reflex release of ADH?
- Increase in extracellular fluid osmolarity (correct)
- Hyperhydration
- Decrease in osmoreceptor activity
- Decrease in plasma sodium concentration
What is the major stimuli for ADH secretion?
What is the major stimuli for ADH secretion?
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What mainly determines the amount of water loss by adjusting urine volume?
What mainly determines the amount of water loss by adjusting urine volume?
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Which part of the nephron reabsorbs about 65-70% of the filtered water by osmosis?
Which part of the nephron reabsorbs about 65-70% of the filtered water by osmosis?
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What is the osmolarity of the reabsorbed water in the proximal convoluted tubules?
What is the osmolarity of the reabsorbed water in the proximal convoluted tubules?
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Which part of the nephron is impermeable to water?
Which part of the nephron is impermeable to water?
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What controls the facultative water reabsorption in late distal tubules and collecting ducts?
What controls the facultative water reabsorption in late distal tubules and collecting ducts?
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What is the main factor that determines the amount of water reabsorption in late distal tubules and collecting ducts?
What is the main factor that determines the amount of water reabsorption in late distal tubules and collecting ducts?
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