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.Know More
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
Bone marrow function tests help assess the health of a patient's bone marrow and determine if it is manufacturing normal amounts of each blood cell, explains the National Heart, Lung, and Blood Institute. Bone marrow contains stem cells that develop into platelets, white blood cells or red blood cells.Full Answer >
The cornea's primary function is to focus and control the entrance of light into the eye. It is a vital part of the eye and acts as the eye's outermost lens.Full Answer >
The coelom is a space between the gut wall and the body wall that acts as a cavity for other organs. It begins to form during the stage of embryonic development where the body cavities develop, and it allows the body's organs to move around while offering some support to the skeletal system.Full Answer >
The function of the laryngopharynx is to pass food and air. The laryngopharynx is part of the pharynx, which connects the mouth and nasal cavities with the esophagus. Its primary responsibility is to guide food and air to their appropriate locations.Full Answer >