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Welcome to our health education library. The information shared below is provided to you as an educational and informational source only and is not intended to replace a medical examination or consultation, or medical advice given to you by a physician or medical professional.

 

Understanding an ErectionQu© sucede durante una erecci³n

Understanding an Erection

The penis is made up of spongy tissue that holds blood. When the penis is flaccid (soft), blood flows in and out of the tissue. During sexual excitement, extra blood flows into the tissue. The extra blood makes the tissue swell so the penis becomes erect (rigid) and firm enough for intercourse.

A Flaccid Penis
A Flaccid Penis
A Normally Erect Penis
A Normally Erect Penis

When There's a Problem

Physical or psychological problems can keep the penile tissue from filling with extra blood or from holding the extra blood in. When this happens, the penis remains soft or gets hard but won't stay hard. This is known as erectile dysfunction.

Date Last Reviewed: 2007-01-15T00:00:00-07:00

Date Last Modified: 2002-07-09T00:00:00-06:00

  

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