Erection - Wikipedia An erection (clinically: penile erection or penile tumescence) is a physiological phenomenon in which the penis becomes firm, engorged, and enlarged Penile erection is the result of a complex interaction of psychological, neural, vascular, and endocrine factors, and is often associated with sexual arousal , sexual attraction or libido
Penis: Anatomy, Picture, Erection, and Ejaculation - WebMD What Is an Erection? An erection occurs when your penis fills with blood, causing it to expand and become firm You might have an erection if you feel sexually aroused, though sometimes they
Penile Erection: Function, Duration How It Works An erection is when a penis hardens and enlarges due to filling up with blood It typically happens when a person is sexually aroused Learn about how an erection works, how to get one and how long they can last
Stages of an Erection and Managing Common Problems An erection is the engorgement of the penis with blood, causing it to get hard and stiff Erections involve a complex interplay of nerves, blood vessels, muscles, and hormones They are typically triggered by sexual arousal or manual stimulation of the penis
How do erections work, and how long should they last? In this article, we discuss how erections work, what factors affect them, and roughly how long an erection should typically last A number of factors can affect how long a person can stay erect