Search this site. Bones and Bony Landmarks of the Appendicular Skeleton. Arches of Foot Medial longitudinal arch. Transverse arch. Carpals Capitate. Clavicle Acromial end.
Description Flattened, lateral end of clavicle Enlarged, medial end of clavicle Description. Relevance Articulates with scapula acromion at acromioclavicular AC joint Articulates with manubrium of sternum at sternoclavicular joint Relevance. Sternal end. Coxal Bone Acetabulum.
Anterior superior iliac spine ASIS. Greater sciatic notch. Iliac crest. Inferior pubic ramus. Ischial ramus. Ischial tuberosity. Obturator foramen. Pubic body. Pubic tubercle. Superior pubic ramus. Symphysial surface. Femur Greater trochanter. Description Description. Relevance Relevance. Intercondylar fossa. Intertrochanteric crest. Lateral condyle. Lateral epicondyle. Lesser trochanter. Linea aspera. Medial condyle. Medial epicondyle. Fibula Head. Lateral malleolus.
Humerus Anatomical neck. Deltoid tuberosity. Greater tubercle. Lesser tubercle. Olecranon fossa. Radial groove. Surgical neck. Middle phalanges. This means that not only the size of a bone, but also its shape, is related to its function. For this reason, the identification of bony landmarks is important during your study of the skeletal system.
The skeletal system includes all of the bones, cartilages, and ligaments of the body that support and give shape to the body and body structures. The skeleton consists of the bones of the body.
For adults, there are bones in the skeleton. Younger individuals have higher numbers of bones because some bones fuse together during childhood and adolescence to form an adult bone.
The primary functions of the skeleton are to provide a rigid, internal structure that can support the weight of the body against the force of gravity, and to provide a structure upon which muscles can act to produce movements of the body. The lower portion of the skeleton is specialized for stability during walking or running.
In contrast, the upper skeleton has greater mobility and ranges of motion, features that allow you to lift and carry objects or turn your head and trunk.
In addition to providing for support and movements of the body, the skeleton has protective and storage functions. It protects the internal organs, including the brain, spinal cord, heart, lungs, and pelvic organs.
The bones of the skeleton serve as the primary storage site for important minerals such as calcium and phosphate. The bone marrow found within bones stores fat and houses the blood-cell producing tissue of the body. The skeleton is subdivided into two major divisions—the axial and appendicular. The axial skeleton forms the vertical, central axis of the body and includes all bones of the head, neck, chest, and back Figure 6. It serves to protect the brain, spinal cord, heart, and lungs.
It also serves as the attachment site for muscles that move the head, neck, and back, and for muscles that act across the shoulder and hip joints to move their corresponding limbs. The axial skeleton of the adult consists of 80 bones, including the skull , the vertebral column , and the thoracic cage. The skull is formed by 22 bones.
0コメント