Anatom3DSkin of arm
Regio brachii · Kůže paže
Skin & appendages
Looks like
The skin of the upper arm, thin on the inside and thicker on the outside.
What it does
Covers the biceps and triceps and the vessels on the inner side.
Keeping it well
The inner arm is where skin shows allergy and eczema early; small rough bumps on the back of the arm are harmless.