Bone structure

A total of adult bone 206 to form the stent body. According to the different patterns of bone can be divided into long bones, short bones, flat bones and irregular bones. Constitute the main bone by bone, the periosteum wrapped outside, hidden inside the bone marrow.
1. Osteoporosis Osteoporosis is a major part of bone. Divided into bone mass and bone density cancellous bone mass density hard at the surface of bone; bone cancellous bone located in the deep.
2. Periosteal periosteal bone are located on the surface (except for the articular surface) close to the thin layer of bone mass density of connective tissue membrane. Its rich nerves, blood vessels and hematopoietic cells, the periosteum of bone fracture repair nutrition and Takeo watch role in properly.
3. Marrow bone marrow bone filled with cancellous bone in the mesh and the bone marrow cavity. Fetal, neonatal bone marrow are red bone marrow with hematopoietic function. With age, bone marrow cavity of the red bone marrow adipose tissue is gradually replaced by bone marrow into yellow, no hematopoietic function. Long bone of spongy bone or flat bone marrow red bone marrow is, and always maintained a hematopoietic function.

1. Calvarial bone composed by 23. Supraorbital margin of the skull to subglottic edge to connect the external ear for the community, from top to bottom is divided into two parts,lower for the cranial surface (Figure 2-4).
(1) brain skull bone from 8 composition, the brain is located in cavity. Cerebral skull is a frontal bone, is located anterior cranial can be divided into the amount of scales, orbital and nasal; parietal bone 2, located in places, between the occipital bone; occipital 1, is located posterior; sphenoid 1, is located cranial at the end of the middle occipital Habitat ago, so named because of the shape of butterflies, the sphenoid bone sub-body, big wings, small wings and wing process; temporal bone 2, around each one, located in sphenoid, parietal bone, occipital bone between the cranial constitute at the end of the sidewall, squamous temporal bone is divided into the Department of the Ministry of mastoid, petrous, drum Department; one ethmoid bone, located under the frontal bone and skull base of the former front, sandwiched between the two eyes, divided into plate, perpendicular plate of ethmoid bone and the labyrinth.
(2) facial skull bone constituted by 15, forming a orbital cavity, nasal cavity, oral and other facial contours. Skull surface, respectively, are plow a bone located between the two nasal cavity, in order to constitute the lower part of nasal septum, the rear of the flat thin plate of bone; a mandible, which is outside the skull, in addition to bone Events can only bone is the largest cranial facial bone; infrahyoid 1, located anterior, the next between the mandible and thyroid cartilage, through the ligament and styloid process of temporal bone connected Hyoid divided into physical, Arcturus, small angle ; Maxilla 2, divided into maxillary body, the amount of process, zygomatic process, palatal, alveolar process, constitute a knock on the wall of the mouth, inferior orbital wall, lateral wall of the nasal cavity; nose 2, located around the jaw, between the amount of penetration for the nasal part of the upper wall; lacrimal bone 2, thin and brittle, it seems the size of fingernails, the former connected to the amount of mandibular protrusion, even after the ethmoid labyrinth of the orbital plane, is located in two of the front wall of intraorbital ; cheekbone 2, in the frontal bone between the maxilla and is located beneath the outer orbital, temporal process and the zygomatic process of temporal bone zygomatic arch from the link, the cheeks are bony protrusions; inferior turbinate 2, attached to the maxillary body nose and face, for the curly thin bony plates; two palatine bone, located in the maxillary palatal process of the sphenoid wing, between the lateral wall of nasal cavity constitutes a part of and the latter part of the hard palate.

2. Trunk bone trunk bone are from 24 vertebrae, one sacrum, coccyx consisting of 1.
(1) according to different parts of vertebrae and is divided into cervical, thoracic, lumbar, sacral vertebrae (sacrum) and caudal (coccygeal).
1) the structure of vertebra vertebrae vertebral body and vertebral arch has two parts. Vertebral body in the former, Spondylolysis in the latter, both surrounded foramen. Connected to the foramen into the spinal canal called the lumen, containing the spinal cord. Spondylolysis has seven processes: the name behind the spinous process, on both sides of the two process is called transverse process, and under the two pairs of protrusions called on the articular process and the next facet.

3) A total of 12 ribs right. Rib points before and after the client and three body parts. Back-end including the rib head, neck and ribs and other rib tubercle. With the front rib cartilage and sternum connected with the corresponding back-end constitute thoracic joints (

1) shoulder strap by the clavicle and scapula bone composition.
① clavicle at the root of subcutaneous cervical length can be touched. The level of spaces. Within the thick client, and handle the relevant section of the sternum; the outer end flat, with the relevant section of the scapula

Carpal rules for small rather than a short bone. Its name many signs of their respective shapes. From top to bottom with two rows of points. Last row from the export-oriented for the scaphoid, lunate, triquetrum and pisiform bone; next row has mostly from outside to inside the angle of bone, small Polyhedrosis bone, capitate bone and hamate bone.
Metacarpal bone metacarpal bone of each piece do not have a special name, by the direction of the thumb to the little finger, respectively, known as I, II, III, IV, V metacarpal. Metacarpal proximal to the end for the middle body, distal to the first. At the end of the first metacarpal was saddle-shaped articular surface for the saddle; the rest are flat articular surface.
(2) lower limb bone from the lower extremities and the composition of free lower limb.
1) lower limb bones composed mainly by the hip. Are located on each side above the hip bone, a piece of the rear ischium, the former composed of the bottom of the pubis.
① hip bone is located on the outside. Bone of the upper part of a wide flat thin, called iliac wing. Wing upper edge thickening, called iliac crest. Iliac crest in front of protrusions called anterior superior iliac spine, below the protrusions called anterior iliac spine.