Review of renal autoregulation.Highlight or underline the term in parentheses that best fits each sentence. Mrs. K’s blood pressure has dropped, which means her NFP and GFR are likely to (decrease; increase), causing filtrate to move more (rapidly; slowly) through the renal tubules. As a result, (more, less) fluid and salts are reabsorbed in the PCT and nephron loop. Consequently, the amount of fluid slowly passing the macula densa is (high, low) in volume and concentration of salts. This condition causes her JGC (macula densa cells) to release (more; less) of a vasoconstrictor substance. As a result her afferent arterioles then dilate so that (more; less) blood flows into glomerular capillaries, causing NFP and GFR to (increase; decrease). This restoration of homeostasis occurs by a (positive; negative) feedback mechanism. The name autoregulation indicates that neither the autonomic nervous system nor any chemical made outside the kidneys is involved in this situation, rather the control (is; is not) intrinsic to the kidneys.
- Review of renal autoregulation.Highlight or underline the term in parentheses that best fits each sentence.
Mrs. K’s blood pressure has dropped, which means her NFP and GFR are likely to (decrease; increase), causing filtrate to move more (rapidly; slowly) through the renal tubules. As a result, (more, less) fluid and salts are reabsorbed in the PCT and nephron loop. Consequently, the amount of fluid slowly passing the macula densa is (high, low) in volume and concentration of salts. This condition causes her JGC (macula densa cells) to release (more; less) of a vasoconstrictor substance. As a result her afferent arterioles then dilate so that (more; less) blood flows into glomerular capillaries, causing NFP and GFR to (increase; decrease). This restoration of homeostasis occurs by a (positive; negative) feedback mechanism. The name autoregulation indicates that neither the autonomic nervous system nor any chemical made outside the kidneys is involved in this situation, rather the control (is; is not) intrinsic to the kidneys.
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