In human anatomy, the extensor pollicis brevis is a skeletal muscle on the dorsal side of the forearm.

The arms were powerful, and the forearm was somewhat shorter than the upper arm (1 1.2 ulna humerus ratio).

In human anatomy, the extensor carpi ulnaris is a skeletal muscle located on the ulnar side of the forearm.

The cubit is an ancient unit based on the forearm length from the middle finger tip to the elbow bottom.

In anatomy, flexor carpi radialis is a muscle of the human forearm that acts to flex and (radial) abduct the hand.

The flexor carpi ulnaris (FCU) muscle is a muscle of the human forearm that acts to flex and adduct the hand.

In human anatomy, extensor carpi radialis brevis is a muscle in the forearm that acts to extend and abduct the wrist.

This is a scan through the human forearm. It's then blown up through rapid prototyping to reveal the cellular structure. I have these in my office.