question 9\nwhich of the following would increase glomerular filtration rate?\na vasodilation of the…

question 9\nwhich of the following would increase glomerular filtration rate?\na vasodilation of the afferent arteriole\nb vasoconstriction of the efferent arteriole\nc antidiuretic hormone (adh)\nd all of the above

question 9\nwhich of the following would increase glomerular filtration rate?\na vasodilation of the afferent arteriole\nb vasoconstriction of the efferent arteriole\nc antidiuretic hormone (adh)\nd all of the above

Answer

Brief Explanations:

  • Option A: Vasodilation of the afferent arteriole allows more blood to flow into the glomerulus, increasing the glomerular filtration rate.
  • Option B: Vasoconstriction of the efferent arteriole increases the resistance to blood outflow from the glomerulus. This leads to an increase in glomerular hydrostatic pressure (as blood has a harder time leaving), which in turn increases the glomerular filtration rate.
  • Option C: Antidiuretic hormone (ADH) mainly acts on the collecting ducts to increase water reabsorption. It does not directly increase the glomerular filtration rate.

Answer:

A. Vasodilation of the afferent arteriole, B. Vasoconstriction of the efferent arteriole