Question

Indirect sympathetic nervous system stimulation causes ________ in skeletal muscle during exercise via ___________.

a) Vasoconstriction; beta-2 receptors
b) Vasodilation; alpha receptors
c) Increased blood flow; beta-1 receptors
d) Decreased blood flow; alpha receptors

Answer 1

Indirect sympathetic nervous system stimulation causes vasodilation in skeletal muscle during exercise via beta-2 receptors.

Step-by-step explanation:

Indirect sympathetic nervous system stimulation causes vasodilation in skeletal muscle during exercise via beta-2 receptors. The sympathetic system, when activated during exercise, leads to the release of adrenaline or noradrenaline, which bind to beta-2 receptors in the skeletal muscle blood vessels. This binding causes relaxation of the smooth muscle surrounding the blood vessels, leading to vasodilation and increased blood flow to the skeletal muscles.