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المُشَآرَكَــآتْ : 668 العمر : 34 الجِنسِيَــه : المَــــــــزَآج : هِوآيَــــــه : المِهْنَـــــــه : نقاط : 635 تاريخ التسجيل : 24/02/2009
| موضوع: divisions of the skeleton السبت أبريل 25, 2009 6:37 pm | |
| | The adult human skeleton usually consists of 206 named bones. These bones can be grouped in two divisions: axial skeleton and appendicular skeleton. The 80 bones of the axial skeleton form the vertical axis of the body. They include the bones of the head, vertebral column, ribs and breastbone or sternum. The appendicular skeleton consists of 126 bones and includes the free appendages and their attachments to the axial skeleton. The
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free appendages are the upper and lower extremities, or limbs, and their attachments which are called girdles. The named bones of the body are listed below by category. Axial Skeleton (80 bones)<BLOCKQUOTE> Skull (28) <BLOCKQUOTE> Cranial Bones
- Parietal (2)
- Temporal (2)
- Frontal (1)
- Occipital (1)
- Ethmoid (1)
- Sphenoid (1)
Facial Bones
- Maxilla (2)
- Zygomatic (2)
- Mandible (1)
- Nasal (2)
- Platine (2)
- Inferior nasal concha (2)
- Lacrimal (2)
- Vomer (1)
Auditory Ossicles
- Malleus (2)
- Incus (2)
- Stapes (2)
</BLOCKQUOTE> Hyoid (1) Vetebral Column
- Cervical vertebrae (7)
- Thoracic vertebrae (12)
- Lumbar vertebrae (5)
- Sacrum (1)
- Coccyx (1)
Thoracic Cage </BLOCKQUOTE> Appendicular Skeleton (126 bones)<BLOCKQUOTE> Pectoral girdles Upper Extremity
- Humerus (2)
- Radius (2)
- Ulna (2)
- Carpals (16)
- Metacarpals (10)
- Phalanges (28)
Pelvic Girdle
- Coxal, innominate, or hip bones (2)
Lower Extremity
- Femur (2)
- Tibia (2)
- Fibula (2)
- Patella (2)
- Tarsals (14)
- Metatarsals (10)
- Phalanges (28)
</BLOCKQUOTE> | |
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