Question

What is the function of the nerves and ganglia wrapped around each renal artery?

1) To issue nerve fibers to the blood vessels
2) To issue nerve fibers to the convoluted tubules of the nephron
3) To follow branches of the renal artery into the parenchyma of the kidney
4) To regulate blood flow in the kidney

Answer 1

The nerves and ganglia wrapped around each renal artery in the kidney regulate blood flow by causing vasoconstriction of the afferent arterioles. This helps redirect blood to other organs during conditions of stress.

Step-by-step explanation:

The nerves and ganglia wrapped around each renal artery in the kidney have the function of regulating blood flow in the kidney. These nerves, part of the autonomic nervous system, provide sympathetic innervation to the blood vessels in the kidney. When sympathetic stimulation increases, vasoconstriction of the afferent arterioles occurs, reducing blood flow and filtration in the kidney. This allows blood to be redirected to other organs with more immediate needs.