Bones of the Upper Limb

The upper limb is divided into three regions: The arm, located between the shoulder and elbow joints;The forearm, which is between the elbow and wrist joints;The hand, which is located distal to the wrist. There are 30 bones in each upper limb: The humerus is the...

Carpal Bones – Wrist Bones

The wrist and base of the hand are formed by a series of eight small carpal bones (Picture 1). The carpal bones are arranged in two rows, forming a proximal row of four carpal bones and a distal row of four carpal bones. The bones in the proximal row, running from the...

Metacarpal Bones – Hand

The palm of the hand contains five elongated metacarpal bones. These bones lie between the carpal bones of the wrist and the bones of the fingers and thumb (Picture 1). The proximal end of each metacarpal bone articulates with one of the distal carpal bones. Each of...

The Appendicular Skeleton

Your skeleton provides the internal supporting structure of the body. The adult axial skeleton consists of 80 bones that form the head and body trunk. Attached to this are the limbs, whose 126 bones constitute the appendicular skeleton. These bones are divided into...

The Shoulder Girdle

The appendicular skeleton includes all of the limb bones, plus the bones that unite each limb with the axial skeleton (Picture 1). The bones that attach each upper limb to the axial skeleton form the pectoral girdle (shoulder girdle). This consists of two bones, the...