The human arm is composed entirely of three bones. Divided by the elbow, there are two parts to the arm. The humerus is the bone that extends from the elbow to the shoulder. The forearm is made up of the radius and ulna. It is wrong to believe the lower arm is composed of one bone. The large range of motion of the arm coemes from the articulation and pivot of the bones. All the bones in the arm are slightly curved.
The humerus is widely studied of the arm bones. The humerus is made up of a narrow neck, a rounded head and two short processes. The head of the humerus articulates at the shoulder. There are vital muscles attached to the upper arm. Without these muscles, humans would not have as many abilities.
Extending from elbow to wrist, the radius is part of the lower arm. This bone gives the arm motion and support. The radius, similar to most arm bones, is long and curved. The radius connects to many muscles.
The ulna is part of the forearm that is closer to the body. The ulna is long and narrow with strong walls. The ulna articulates to help increase the range of motion of the human arm. Many muscles nad ligaments are attached to the ulna.
If you are interested in the bones of the arm, you also may be interested in Sternum anatomy. The Sternum anatomy is another important aspect of human anatomy and it’s understanding is necessary for anatomy. Information on Sternum anatomy and other vital skeletal system parts can be found at LearnBones.com.
Learning about bones is very interesting and vital for some careers. Sometimes it is hard to find a website with the right information about bones. Learnbones.com is the perfect place to learn everything there is to know about bones. Learnbones is the best tool for learning about bones.
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