Question

A man was lifting a large, heavy weight. In what position would his forearms be if his wrists are facing upward as he lifts, and what muscles (two) would help him maintain that position?

Answer 1

The man's forearms would be in a supinated position with the wrists facing upward while lifting. The biceps brachii and brachioradialis muscles help maintain this position.

Step-by-step explanation:

When a man lifts a weight with his wrists facing upward, his forearms are said to be in a supinated position. This position is when the palms are facing forward or upward and the radius and ulna, the bones of the forearm, are parallel. The two primary muscles that would help him maintain this position while lifting the heavy weight are the biceps brachii and the brachioradialis. The biceps brachii muscle, situated in the upper arm, is primarily responsible for flexing the elbow and supinating the forearm. On the other hand, the brachioradialis, which originates in the upper arm and inserts into the forearm, assists in flexing the elbow, especially when the forearm is in mid-position between supination and pronation.