Question

Which option is correct for the region labeled as A, B, C and D in the given diagram?

• A. A-Scapula, B-Clavicle, C-Humerus, D-Ulna
• B. A-Clavicle, B-Scapula, C-Humerus, D-Radius
• C. A-Clavicle, B-Ulna, C-Radius, D-Humerus
• D. A-Clavicle, B-Glenoid cavity, C-Radius, D-Ulna.

Answer 1

The correct option is B A-Clavicle, B-Scapula, C-Humerus, D-Radius

The given diagram shows the bones of hand (forelimb). The different labeled parts are:
A-Clavicle - It is a long bone that serves as an articulation between the scapula and sternum. It is the only bone in the body that lies horizontally. Also known as collarbone.
B-Scapula - It is the bone that connects the humerus with the clavicle. In human, it is a flat bone, roughly triangular in shape. It is also called upper arm bone.
C-Humerus - It is a long bone in the arm (forelimb) that runs from the shoulder to the elbow. It connects primarily to the ulna.
D- Radius - It is the shorter of the two bones of the forearm (the other is ulna). It is the bone on the thumb side of the arm. It contributes to the movement of the wrist.