Which of the following correctly demonstrates how structures of the nephron affect its function?
OA. When blood pressure is high, the smooth muscles of the afferent arteriole can contract to decrease GFR
and prevent excessive loss of water and salt in the urine.
OB. When blood pressure is high, the smooth muscles of the efferent arteriole can relax to increase GFR
and promote the release of excess water from the body.
OC. The endothelial cells lining the capillaries of the glomerulus are impermeable to most substances,
which prevents the loss of nutrients from the blood.
OD. The endothelial cells lining the efferent arteriole are impermeable to solutes, which prevents the
reabsorption of harmful materials into the blood.
