Question

1. Assume you have a 10-lb weight in your right hand. Explain why it is easier to flex the right

elbow when your forearm is supinated than when it is pronated.
Explain which muscles help the movement
Explain in detail each muscle responsible for the movement , as well as which muscles are antagonist ,synergist ,fixator ,and exactly how the insertion and origin points of these muscles don’t make it easier to flex elbow while pronated.

Answer 1

I did it already.

Step-by-step explanation:

Supinated would be your palm is up; so flexing your elbow up in order to lift the weight is the natural way that you flex your elbow.

Pronated is when your palm is face down; so even without the weight in your hand you wouldn't be able to flex your elbow (at least not upwards, lifting the weight).