Upper: humerus.
Lower: Radius and ulna
Upper arm = Humerus Lower arm = Ulna and Radius
Upper arm: Humerus Lower Arm: Ulna & Radius
Three: the humerus (upper arm), ulna and radius (lower arm).
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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 humerus is the bone in the upper arm. The radius and the ulna are the bones in the forearm. The femur is the bone in the thigh. The tibia and the fibula are the bones in the lower leg.
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 humerus is informally referred to as the upper-arm bone.
The humerus is the bone of the upper arm, not the lower arm/forearm.
The elbow joint is located between the upper arm bone (humerus) in the lower arm bones (ulna and radius).
There is only one bone in the upper arm - the humerus.
http://en.wikipedia.org/wiki/File:Illu_upper_extremity.jpg this is a pic of the arm bones I think you meant the forearm bones because they have 2, the radius and ulna. The upper arm is the humerus