Search results
Results from the WOW.Com Content Network
The humerus (/ ˈ h juː m ər ə s /; pl.: humeri) is a long bone in the arm that runs from the shoulder to the elbow.It connects the scapula and the two bones of the lower arm, the radius and ulna, and consists of three sections.
The ulna or ulnar bone (pl.: ulnae or ulnas) [3] is a long bone in the forearm stretching from the elbow to the wrist. It is on the same side of the forearm as the little finger, running parallel to the radius, the forearm's other long bone. Longer and thinner than the radius, the ulna is considered to be the smaller long bone of the lower arm.
There are a total of 64 bones in the arms, 32 in each arm Upper arm bones (6 bones in total; 3 on each side) Humerus (2) Pectoral girdle (shoulder) Scapula (2) Clavicle (2) Lower arm bones (4 bones in total, 2 on each side) left bone Ulna (2) (Lined up with pinky) Radius (2) (Lined up with thumb) Hand (54 bones in total; 27 in each hand) Carpals
Its lower third is broad, convex, and covered by the tendons of the muscles which subsequently run in the grooves on the lower end of the bone. The lateral surface (facies lateralis; external surface) is convex throughout its entire extent and is known as the convexity of the radius, curving outwards to be convex at the side.
The forearm is the region of the upper limb between the elbow and the wrist. [1] The term forearm is used in anatomy to distinguish it from the arm, a word which is used to describe the entire appendage of the upper limb, but which in anatomy, technically, means only the region of the upper arm, whereas the lower "arm" is called the forearm.
English: The humerus is the (upper) arm bone. It joins with the scapula above at the shoulder joint (or glenohumeral joint) and with the ulna and radius below at the elbow joint. Notice: When the arm is spun so that the thumb point to the outside of the body, meaning the palm of the hand looks forward then it is said the hand is supinated. But ...
In humans and other apes, it is trochleariform (or trochleiform), as opposed to cylindrical in most monkeys and conical in some prosimians. [1] It presents a deep depression between two well-marked borders; it is convex from before backward, concave from side to side, and occupies the anterior, lower, and posterior parts of the extremity.
The ulnar nerve is trapped between the bone and the overlying skin at this point. This is commonly referred to as bumping one's " funny bone ". [ 2 ] This name is thought to be a pun , based on the sound resemblance between the name of the bone of the upper arm, the humerus , and the word " humorous ". [ 3 ]