Question

Movement of the distal point of an extremity toward the trunk is called:

A.) Flexion
B.) Supination
C.) Extension
D.) Pronation

Answer 1

The movement of the distal point of an extremity toward the trunk is called flexion, which involves decreasing the angle between the bones at a joint. The correct option is A.) Flexion

Step-by-step explanation:

The movement of the distal point of an extremity toward the trunk is called flexion. In the context of the upper limb, flexion generally refers to the action of decreasing the angle between the forearm and the arm, such as when bending the elbow. In contrast, extension is the process of increasing this angle, effectively straightening the joint.

It's important to note that these actions are the opposite of pronation and supination, which are rotational movements of the forearm. When a person pronates their forearm, the palm faces backward and the radius crosses over the ulna forming an 'X' shape. Supination, the reverse motion, results in the palm facing forward with the radius and ulna parallel. The correct option is A.) Flexion