sentence: Nipples can also become erect when a person feels cold or sexually excited.
sentences_before: The nipples of men and women can also become erect. Men and women may also have an erection of their nipples when they are sexually excited. This is caused by the release of a hormone called oxytocin in the body.
concept_name: nipple
headings: Erection Nipples
categories: Female reproductive system Male reproductive system