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

question 158

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.

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Definitions:

Gonads

The primary reproductive organs in animals that produce gametes; in males, they are the testes, and in females, the ovaries.

Thyroid

A gland located in the neck that produces hormones regulating the body's metabolic rate as well as heart and digestive function, muscle control, brain development, and bone maintenance.

Thalamus

A structure in the brain that relays motor and sensory signals to the cerebral cortex.

Pituitary

A small gland at the base of the brain that produces hormones which regulate growth and the function of other glands in the body.