Because of it's shape !
The scientific name for the forearm bone is the radius.
The scientific name for the inner lower arm bone is the ulna. It runs parallel to the radius, the other bone in the lower arm. It plays a key role in the structure and function of the forearm.
There are two bones in the forearm, the radius and the ulna. The easiest way to remember which one is which is to extend your arm out palm facing vertically. When you look at your forearm your radius is the top bone and the Ulna is the lower bone.Or (as I did) remember it with this sentence: "The Ulna is Underneath."
Outer or inner? The bone between the shoulder and the elbow is the humerus. The two bones in the forearm (between the elbow and the wrist) are the larger, longer bone, the radius, and the smaller bone, the ulna.
The humerus is informally referred to as the upper-arm bone.
The scientific name for the forearm bone is the radius.
radius
The scientific name for the inner lower arm bone is the ulna. It runs parallel to the radius, the other bone in the lower arm. It plays a key role in the structure and function of the forearm.
There are two bones in the forearm, the radius and the ulna. The easiest way to remember which one is which is to extend your arm out palm facing vertically. When you look at your forearm your radius is the top bone and the Ulna is the lower bone.Or (as I did) remember it with this sentence: "The Ulna is Underneath."
The bones of the lower arm are the radius and ulna. The radius is on the "thumb" side, and the ulna is on the "pinkie" side.
Outer or inner? The bone between the shoulder and the elbow is the humerus. The two bones in the forearm (between the elbow and the wrist) are the larger, longer bone, the radius, and the smaller bone, the ulna.
The humerus is informally referred to as the upper-arm bone.
an arm bone
The humerus, radius, and ulna are the bones of your arm. The humerus is the upper arm bone. In the forearm, the radius is the larger bone on the "thumb side," and the ulna is the smaller bone on the "pinkie" side.
The radius is the large bone in the arm.
there are two, the radius and the ulna in the forearm.
The wrist bone would be the Ulna. carpals..