I believe you're talking about the patella, or the kneecap.
Radius and ulna
No. The 3 main bones of the arm - namely, the humerus, ulna and radius - are all long bones.
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
The bones in the lower arm are the RADIUS and the ULNA.
30 bones in each arm, so a total of 60 in the upper extremities
knee cap
Three: the humerus (upper arm), ulna and radius (lower arm).
There are three arm bones, the Ulna, the Radius and the Humerus.
30 counting the hands
Arm: Humerus, Ulna, and Radius, Carpal bones Leg: Femur, Patella, Fabellae, tibia, fibula, tarsal bones
you expect to find more cartilage between the arm and the shoulder because the cartilage is found in many bones.
the arm has three bones.
adipose
The muscles attach to the bones of the arm
bone marrow is found in the hallow of the bone.
yellow marrow
Radius and ulna