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Skeletal System
Bones
Bone | Location |
---|---|
Parietal | Paired bones form most of the superior and lateral walls of the cranium. They meet in the midline of the skull at the sagittal suture and form the coronal suture, where they meet the frontal bone |
Occipital | The most posterior bone of the cranium. Forms the base and back wall of the skull. Joins the parietal bones anteriorly at the lambdoid suture. |
Frontal | Forms the forehead, the bony projections under the eyebrows, and the superior part of each eye's orbit. |
Maxillae | Fuse to form the upper jaw. All facial bones except the Mandible join. Thus, they are the main "keystone," bones of the face. Carry the upper teeth. |
Mandible | (Lower jaw)The largest and strongest bone of the face. Joins the temporal bones on each side of the face, forming the only freely movable joints in the skull. |
Clavicle | (Collarbone)slender, doubly curved bone. Attaches to the manubrium of the sternum medially and to the scapula laterally, where it helps to form the shoulder joint. |
Scapulae | (Shoulder blades)triangular and called "wings" b/c they flare when we move our arms posteriorly. |
Sternum | (Breastbone)flat bone and fusion of three bones- manubrium, body, xiphoid process. Attached to the first 7 pairs of ribs. |
Ribs | 12 pairs form the the walls of the bony thorax. |
Vertebra | (Spine)Serves as the axial support of the body. Extends from the skull, which it supports, to the pelvis, where it transmits the weight of the body to the lower limbs. |
Humerus | (Arm)formed by single long bone. At its proximal end is a rounded head that fits into the shallow glenoid cavity of the scapula. |
Radius | When body is in anatomical position it is the lateral bone; it is the thumb side of the forearm. |
Ulna | When the body is in anatomical position it is the medial bone; it is on the side of the little(pinky) finger side. |
Sacrum | Formed by the fusion of 5 vertebrae. Superiorly it articulates w/ L5, and inferiorly it connects w/ the coccyx(tailbone) |
Coxal | Part of the pelvic girdle. Commonly called hip bones. |
Carpals | 8 arranged in two irregular rows of four bones each. Form the part of the hand called the carpus or, more commonly, the wrist. Bound together by ligaments that restrict movements between them. |
Metacarpals | Form the palm of the hand. |
Phalanges | Bones of the fingers |
Femur | (Thigh bone)The heaviest, strongest bone in the body. Its proximal end has a ball-like head, a neck, and greater and lesser trochanters. The head articulates w/ the acetabulum of the hip bone in a deep, secure socket. |
Patella | (Kneecap)a sesamoid bone. |
Tibia | (Shinbone)Proximal end, the medial & lateral condyles articulate w/ the distal end of the femur to form the knee joint. |
Fibula | Lies alongside the tibia & forms joints w/ it both proximally & distally. Has NO part in forming the knee joint. |
Talus | (Ankle)Lies between the tibia & the calcaneus. |
Tarsals | 7 bones forming the posterior half of the foot. |
Metatarsals | 5 bones that form the sole of the foot. |
Phalanges | 14 bones that form the toes |