The Pelvis is the basin-shaped cavity which forms the lowest portion of the trunk; and contains the bladder, the internal organs of generation, part of the intestines, and several great blood-vessels and nerves. The pelvis is composed of four bones—2 Innominate or haunch-bones. 1 Sacrum or rump-bone. 1 Coccyx.
The Innominate or haunch-bones, with the lower portion of spine (sacrum and coccyx), form the lowest portion of the trunk. The innominate bones on their outer surfaces have cup-like depressions for the reception of the heads of the thigh-bones.
The Shoulder is formed by the clavicle or collar-bone and scapula or blade-bone.
The Clavicle, or collar-bone, has a double curve; it marks the line dividing the neck and chest.
The Scapula, or blade-bone, lies on the back of the chest, is of a triangular shape, and forms the socket for the humerus or arm-bone.
The Upper Limb comprises—1 Humerus, arm-bone. 2 Radius and Ulna, fore-arm. 8 Carpus, wrist. Metacarpus, palm. Phalanges, finger-bones.
The Humerus, or bone of upper arm, extends from the shoulder to the elbow; above, it is joined to the scapula, and below to the bones of fore-arm.
The Ulna is the larger bone of the fore-arm, lies on the inside, and extends from elbow to wrist.
The Radius lies on the outside of the fore-arm.