The mechanism by which both parasympathetic and sympathetic innervations work on penile function during sexual arousal. Introduction: The penis and the scrotum form the external genitalia in males. The process by which semen is expelled from the penis during sexual arousal is called ejaculation. This process takes place by the rhythmic contraction of the smooth muscle in the wall of the urethra.

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Chapter 28, Problem 15WYL

Summary Introduction

To determine:

The mechanism by which both parasympathetic and sympathetic innervations work on penile function during sexual arousal.

Introduction:

The penis and the scrotum form the external genitalia in males. The process by which semen is expelled from the penis during sexual arousal is called ejaculation. This process takes place by the rhythmic contraction of the smooth muscle in the wall of the urethra.

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