Do Autonomic Functions,such as Breathing,heart Rate,and Contraction of Blood Vessels

Multiple Choice

Do autonomic functions,such as breathing,heart rate,and contraction of blood vessels and intestinal muscles,utilize sensory inputs?

A) No;they are internal and function regardless of inputs from the environment.
B) No;they are essential to life and must occur automatically,in spite of environmental conditions.
C) No;they are regulated only by efferent (motor) neurons,so they have no sensory inputs.
D) Yes;they can be regulated by internal sensory inputs,such as concentrations of gas or chemicals.
E) Yes;they are controlled entirely from the spinal cord and receive sensory inputs from ganglia in that region.