Question

Raising your hand and placing it on the shoulder of a person standing in front of you, requires __________ of the shoulder.

Answer 1

The action described involves the superior rotation of the scapula, performed by scapular muscles, which is necessary for lifting the arm to place it on another person's shoulder.

Step-by-step explanation:

Raising your hand and placing it on the shoulder of a person standing in front of you primarily involves the action of scapular muscles which participate in the superior rotation of the scapula. This motion involves lifting the arms at the shoulder, which is executed by the scapular muscles to increase the weight-bearing support needed, such as when carrying a heavy load like a book bag on one shoulder. During this motion, the scapula moves in an upward direction as part of the rotation required for the lifting of the arm.

Answer 2

flexion

Raising your hand and placing it on the shoulder of a person standing in front of you, requires flexion of the shoulder.

Step-by-step explanation:

During flexion, also known as bending, the angle between the two moving parts is reduced (bones or body parts), again this is just bending in simple terms, which is the case for this question.