The muscles of the arm and forearm

Elbow flexors and extensors, pronators and supinators, wrist flexors and extensors.

The outline, topic by topic

Each topic is weighted the way the exam weighs it.

Biceps brachii: what is it?
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A two-headed muscle at the front of the arm that flexes the elbow and supinates.
It is strongest in supination: palm up.
To target the biceps rather than the brachioradialis in the gym, which grip?
- Palm up
- Thumb up
- Palm down
- Thumb down
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Palm up
The biceps also supinates: it is most effective in supination.
Brachialis: what is it?
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The muscle under the biceps, a pure elbow flexor.
It flexes whatever the forearm's position.
Why does the triceps' long head work more with the arm overhead?
- It crosses the shoulder and is then shortened
- It crosses the shoulder and is then stretched
- The raised arm lengthens its lever arm at the elbow
- The deltoid then stops helping it extend the elbow
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It crosses the shoulder and is then stretched
A two-joint muscle depends on both joints' positions.