Final answer:
The extensor digiti minimi is a muscle located in the forearm that extends the little finger. It is innervated by the radial nerve and supplied with blood by the posterior interosseous artery.
Step-by-step explanation:
The extensor digiti minimi is a muscle located in the forearm that connects to the little finger. It has its insertion point on the little finger and its action is to extend the little finger at the metacarpophalangeal joint. The extensor digiti minimi is innervated by the radial nerve. As for its blood supply, it is mainly provided by the posterior interosseous artery.