In the emergency department, a client arrives following a car accident. his pulse is 122; bp 88/60; respiration is 18 bpm. urine output is 4 ml over the first hour on arrival. when in shock, this lower urine output is primarily due to:

innervation of the sympathetic nervous system

Explanation:

Based on the information provided within the question it can be said that this lower urine output is primarily due to innervation of the sympathetic nervous system. This supply of nerves then increases the pressure which tightens the afferent arteriole, and is what prevents urine from passing through. Hence why the urine output is only 4 mL over the first hour on arrival.