The action of the supinator is to ______ the forearm.Multiple choice question.extendlaterally rotatemedially rotateflex

Break Down the Problem

1. Identify the function of the supinator muscle.
2. Determine its role in forearm movement.

Relevant Concepts

• The supinator is a muscle located in the posterior part of the forearm.
• It primarily assists in the rotation of the forearm.

Analysis and Detail

1. The main action of the supinator muscle is to rotate the forearm.
2. Specifically, it enables the lateral rotation of the forearm, which is essential for actions like turning the palm upward.

Verify and Summarize

• Among the options provided, the supinator does not extend, medially rotate, or flex the forearm.
• Its primary action is to allow for the lateral rotation of the forearm.

Final Answer

The action of the supinator is to laterally rotate the forearm.