Question

Ordered from proximal to distal, which of the following is found in the arm?

1) Ulna
2) Radius
3) Humerus
4) Carpals

Answer 1

In the arm, the humerus is the proximal bone of the upper arm, followed by the ulna and radius in the forearm, and then the carpals at the base of the hand, ordered from proximal to distal.

Step-by-step explanation:

The upper limb is structured into various regions, and the arrangement of bones from proximal to distal in the arm is important in understanding human anatomy. When ordering from proximal to distal, the sequence of bones found in the arm is the humerus (found in the upper arm), the ulna and radius (both found in the forearm), and the carpals (the base of the hand).

1. Humerus- It is the single long bone of the upper arm, located between the shoulder and elbow joints.
2. Ulna - Medially positioned in the forearm, the ulna is one of the two bones in the lower arm.
3. Radius - The lateral bone in the forearm, positioned parallel to the ulna.
4. Carpals - These eight bones form the base of the hand and contribute to the wrist.