What is Erection?
{{cleanup|reason=Complex vocabulary and sentence structure. Non-encyclopdic style in places.Organization.|date=August 2023}} {{complex|date=August 2023}} {{Wiktionary}} [[File:Erect shaved penis.jpg|thumb|A [[Shaving|shaved]] erect penis]] An '''erection''' ({{respelled|p=on|ee-<small>REK</small>-shən}}) most often refers to an erection of the penis. Erections sometimes occur in the male [[fetus]] (the body before birth), and occur naturally in boys from birth onwards.<ref>{{cite web |title=Preputial pathology - Foreskin concerns |url=http://www.monashchildrenshospital.org/wp-content/uploads/2016/10/prepuce-foreskin-concerns.pdf |publisher=Monash Children's Hospital |accessdate=1 August 2023}}</ref> It is normal for the penis to be erect when a male wakes up. This is commonly called [[morning wood]]. It is also normal for male teenagers and men to have an erection several times per night when sleeping. It is widely believed that a man's penis needs to be erect in order for him to take part in [[sexual intercourse]] and penetrate his partner's [[vagina]] and to [[ejaculation|ejaculate]] [[semen]], but all are possible without an erection. In a healthy male, an erection will usually occur if the man is [[sexual arousal|sexually aroused]] (made sexually excited) or stimulated. This can happen if he is touched sexually, or even if he is not touched – for example, if he sees a [[nude|naked person]] or thinks about having sex with someone else. Erections can also occur without thinking about sex or being touched. Most boy teenagers have unexpected erections. This is normal. Erections happen several times during the night. This happens to all healthy adult males of all ages. This also happens when a man wakes up. That is normal too. [[Tissue (biological)|Tissues]] in the penis called the corpus spongiosum penis and [[corpus cavernosum|corpora cavernosa penis]] fill with [[blood]], causing the penis to become longer, thicker, harder and to stand upright. A man's erection usually stops if he is no longer sexually arouse