Concept explainers
To review:
The given blank space in the statement, “__________ is the enlargement and stiffening of the penis, which is the result when the tissue in the penis becomes engorged with blood, and _______ is the process by which semen is expelled from the penis.”
Introduction:
Sex is the short form of sexual intercourse. It not only involves intercourse, but also involves other acts that lead to sexual stimulation. The act of sex can be subdivided into four stages, namely the excitement phase, during which the arousal of the person takes place, the second stage, which is the plateau phase, the third stage, which is marked by intense pleasure, and the resolutionstage, during which the body returns to its normal state.
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Human Anatomy & Physiology (2nd Edition)
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