Which of the Following Statements Best Describes How Normal Voluntary

question 37

Multiple Choice

Which of the following statements best describes how normal voluntary urination occurs?

• A) The detrusor muscle relaxes to pass urine through the urethra.
• B) The external urethral sphincter contracts to force urine out of the bladder.
• C) Stretch receptors send sensory impulse to the voiding reflex center.
• D) Voluntary control of the internal urethral sphincter leads to bladder emptying.

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Definitions:

Epidural Space

A fat-filled space surrounding the spinal cord that provides a protective cushion and houses nerves and blood vessels.

Meninges

Three protective membranes that envelop the brain and spinal cord, comprising the dura mater, arachnoid mater, and pia mater.

Reciprocal Innervation

A neurological process where the activation of one muscle is accompanied by the relaxation of its antagonist muscle.

Stretch Reflex

A muscle reflex that responds to the stretching within the muscle, automatically contracting the muscle in response to its stretching in order to protect the muscle from over-stretching.