Adults have 206 bones, they are usually connected by joints and ligaments. In addition to the six small ossicles belonging to the sensory organ, it can be divided into 23 skulls, 51 trunk bones, and 126 limb bones according to the site.
1. Head bones: parietal bone, frontal bone, sphenoid bone, superior orbital condyle, orbital, temporal bone, nasal bone, lacrimal bone, suborbital foramen, iliac bone, pear bone, nasal spine, maxilla, mandible, iliac crest, cervical spine .
2. Head bones: clavicle, sternal stalk, ribs, sternum, rib cartilage, sternum, atrial constriction, thoracic spine, floating ribs, lumbar spine, intervertebral disc, sacrum, coccyx, sacrum, ischium, pubic bone, pubic symphysis, hip
3. Upper limb bones: shoulder joint, scapula, humerus, epicondyle of humerus, middle condyle of humerus, elbow joint, ulna, radius, carpal, metacarpal, phalange.
4. Lower extremity bones: femur, femoral epicondyle, femoral condyle, knee joint, kneecap, tibia, fibula, medial malleolus, lateral malleolus, talus, calcaneus, sacrum, scaphoid, sacrum, phalanges.
Bones are the hard organs that make up the bones of vertebrate bones. Their functions are to move, support, and protect the body; to make red and white blood cells; and to store minerals. The bones are made up of a variety of different shapes and have complex internal and external structures that keep them rigid while reducing weight. One of the components of bone is mineralized skeletal tissue with a solid honeycomb-like three-dimensional structure inside; other tissues include bone marrow, periosteum, nerves, blood vessels and cartilage. The human skeleton plays a role in supporting the body and is part of the human motor system.
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