Nerve signals traveling from the brain to the penis
![Drawing of nerve signals traveling from the brain to the penis.](https://www.niddk.nih.gov/media-assets/17696/N00603-H_thumbnail.jpg)
Description
Drawing of nerve signals traveling from the brain to the penis.
Alternate Text
Drawing of nerve signals traveling from the brain to the penis.
Caption
When your brain senses a sexual urge, it starts an erection by sending nerve signals to the penis.
Diseases or Conditions
File Size
577 KB | 2406 x 3000
File Type
JPG