An erection (clinically: penile erection or penile tumescence) is a physiological phenomenon in which the penis becomes firm, engorged, and enlarged.

Nov 21, 2025 · During erection, blood flows into the spaces, causing distention and elevation of the penis. The amount of blood entering the penis can be increased by physical or …

Nov 10, 2025 · Erectile dysfunction can happen due to factors like age, stress, and health problems. Exercising and eating a healthy diet can help improve erections. Erections happen …

May 6, 2024 · An erection is a physiological process in which your penis hardens and becomes larger, usually in response to some type of sexual stimulation. While it may seem to happen …

The initiation of a penile erection is controlled by the nervous system, which sends specific signals to the penile tissues. Erections are categorized into three types based on their primary trigger: …

Jul 25, 2025 · When men become sexually aroused, hormones, muscles, nerves, and blood vessels all work with one another to create an erection. Nerve signals, sent from the brain to …

Apr 5, 2025 · Erection involves nerves, blood flow, hormones, and emotions. Learn types, stages, issues, and proven treatment options.

When the penis is 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. The penis then becomes hard …

Dec 6, 2024 · An erection occurs when the penis becomes firm, enlarged, and erect due to increased blood flow—usually triggered by sexual arousal or physical stimulation. This natural …

Jan 15, 2025 · Understanding erections is key to maintaining sexual health. This guide explores the science behind them, including blood flow, hormones, and how lifestyle choices impact …