The biceps brachii attaches to two places on the scapula and to one site on the radius. When the biceps brachii contracts, the radius moves and the arm bends at the elbow. The ________ site of the biceps brachii is its attachment site on the radius.

Fill in the blank(s) with the appropriate word(s).

insertion

The insertion site of the biceps brachii is its attachment on the radius.