The Skeleton The Head • Cranium – Also known as the skull. Protects the brain. • Mandible – Jaw bone, holds the teeth in place. Works with the upper mouth bone called the maxilla (mustache bone) Vertebrae • Four Sections – Cervical, Thoracic, Lumber, Sacrum and Coccyx • The vertebrae consists of 24 individual bones followed by 5 fused bones of the sacrum and 4 fused bones of the coccyx Sternum and Ribs • Sternum - "chest" or breastbone is a long, flat bone located in the center of the thoracic (chest). It connects to the rib bones via cartilage, forming the rib cage with them, and thus helps to protect the lungs, heart and major blood vessels from physical trauma. • Rib cage- Human ribcage consists of 24 ribs, 12 on each side, the sternum and the 12 thoracic vertebrae and floating ribs. Clavicle and Arms • Clavicle – also known as the collar bone is classified as a long bone that makes up part of the shoulder girdle. Arms Arm – is also known as the humerus; upper arm Forearm - bones are the radius and ulna; lower arm. Radius is RAD and connects to your thumb Hands • The hand - consists of the carpals, metacarpals, and phalanges • There are 8 carpal bones • There are 5 Metacarpal bones • There are 15 phalange bones • They are identified by distal, middle and proximal. The thumb only has distal and proximal phalange bones Hips • • • • Hip Bone - is a large, flattened, irregularly shaped bone. It consists of three parts, the ilium, ischium, and pubis It is one of the few ball and socket synovial joints in the body. It meets its fellow on the opposite side in the middle line in front, and together they form the sides and anterior wall of the pelvic cavity. The pelvic cavity also contains the sacrum and coccyx Legs • The anatomy of the leg is similar to the arm. The 4 bones of the leg are the femur, the tibia, the fibula and the patella. • The femur - is the upper leg bone which helps form the hip joint by articulating (fit together) with the pelvis. It is the largest ball and socket joint in the body. • The tibia - in the lower leg, supports most of the body's weight • The fibula - provides support for the ankle and space for muscle attachments. • The patella - is the kneecap. Feet • The foot - consists of tarsal, metatarsals and phalange bones • There are seven tarsal bones, each one has its own name. Calcaneus, Talus, Navicular, Medial Cuneiform, Intermediate Cuneiform, Lateral Cuneiform, and the Cuboid. • The Talus (ankle) - articulates with Tibia and Fibula. Together with the Calcaneus (Heel bone), they carry most of the body’s weight.