Like many other bones, the ulna stores minerals and produces blood cells in the bone marrow. However, the primary purpose of the ulna is to support the forearm and allow it to move, according to LearnBones.com. The ulna extends from the elbow to the bones of the wrist and works in conjunction with another long bone in the forearm, called the radius.Continue Reading
According to Healthline, the ulna is about 50 percent larger in diameter than the radius is at four to five months of age. However, over the course of growing and developing, the radius overtakes the ulna in size. By adulthood, the ulna is only about half as thick as the radius. Healthline contends that when the ulna breaks, it usually does so near the wrist or where the ulna and radius fuse to form a stationary joint.
InnerBody.com explains that the ulna is located on the inside of the arm, when the palms are held up. In other words, it is on the side of the arm that holds the pinky, while the radius is on the side that holds the thumb.
LearnBones.com states that the ulna is slightly curved, as are the other bones in the arm. Many different muscles and tendons attach to the ulna to permit movement in the arm, wrist and hand.Learn more about Human Anatomy
According to the Mayo Clinic, a low white blood cell count usually is the result of a medical condition that disrupts the function of the bone marrow or destroys white blood cells. These include infections, congenital disorders, certain cancers, cancer therapies and certain drugs. According to the National Heart Lung and Blood Institute, lymphocytes are a type of white blood cell that are counted in the total white blood count.Full Answer >
According to IvyRose Holistic, the human skeleton supports soft tissues and muscles, protects internal organs from injury, assists in movement, stores minerals, produces blood cells and stores chemical energy. The rib cage is the part of the skeleton that protects the lungs and heart, while the vertebrae and cranium protect the spinal cord and the brain respectively. Phosphorus and calcium are the main minerals within the human skeleton.Full Answer >
The three bones in the human arm are the humerus, the ulna and the radius. The humerus comprises the upper arm from the shoulder joint to the elbow. The lower arm includes the ulna and radius, both running from the elbow to the wrist.Full Answer >
The role of the spleen is to destroy depleted red blood cells from the blood stream, while the marrow is an essential location in the body where blood cells develop. Blood is made in the bone marrow. Once blood is produced, it flows throughout the body.Full Answer >