Scrotum - The sack that holds the testicles.
Shaft skin- The lowest skin on the penile shaft, that can’t be categorized as foreskin.
Outer mucosa- The outer foreskin. Covers the glans (head of the penis) when flaccid, but this is the portion that remains on the outside of the “skin tube.” Basically this is the same type of skin as regular shaft skin, it’s just located higher up.
Inner mucosa- The inner foreskin. The portion of foreskin that’s inside the “skin tube” when flaccid, and directly contacts the glans. The inner foreskin is highly sensitive, thinner than regular shaft skin, and one of its functions is to protect the glans and keep that more sensitive, too. Circumcision removes a varying degree of inner skin.
Coronal sulcus - Also commonly referred to as just the sulcus. The little groove where the glans and shaft meet.
Glans - The head of the penis. The glans is intended to be covered and kept sensitive by foreskin when flaccid, thus circumcised penises have a glans that is less sexually responsive due to years of exposure.
Frenulum - The strip of skin tethering the glans to the foreskin. Often highly sexually sensitive, but sadly it is often partially or completely removed in circumcision.
Coronal ridge - Also known simply as the corona. The ridge of the glans, that tends to be highly sensitive.
Frenar band - Also known as the ridged band. A highly sensitive bundle of nerves within the inner foreskin, that is unfortunately removed in circumcision.
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