General Anatomy: Pectoral Girdle & Upper Limb Extremities

The scapular spine divides the scapula into supraspinous and infraspinous fossa.

The scapula is a round bone that can easily be seen and felt in a living person.

The acromion process of the scapula forms the attachment site for the humerus bone.

The clavicle is a long bone with a slight sigmoid curve.

The coracoid process of the scapula provides attachment sites for some leg muscles.

The glenoid cavity of the scapula articulates with the head of the femur bone.

The wrist is composed of six carpal bones arranged into two rows of three each.

The proximal row of carpal bones includes the bones: Scaphoid, Lunate, Triquetrum, and Pisiform.

The distal row of carpal bones includes the bones: Trapezium, Trapezoid, Capitate, and Hamate.

Each digit consists of four phalanges (proximal, middle, distal, and base), except for the thumb (first digit).

The lateral side of the distal end of the radius projects proximally as the styloid process.

The hand is composed of five metacarpals, each with a base, body, and head portion.

The lateral end of the clavicle articulates with the glenoid cavity of the scapula.

The humerus is the only bone in the arm, from the shoulder to the elbow.

The greater tubercle of the humerus is located on the anterior surface of its proximal end.

The bicipital groove contains two tendons of the biceps brachii muscle.

The surgical neck of the humerus is a common fracture site that rarely requires surgical repair.

The deltoid tuberosity on the humerus is the attachment site for the triceps muscle.