Make no bones about it, the skeletal system is an  essential part of life. It is responsible for support, movement, and protection, as well as for the production of blood cells, storage of minerals, and assisting in endocrine regulation. The adult skeletal system is composed of 206 bones, while a newborn's is composed of 305. 

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ADULT AXIAL SKELETON (80): 

Skull (28 including inner ear)

• 14 Cranial 

• 8 Facial 

• 3 Inner Ear (each)

 

Hyoid (1)

Sternum (1)  

Ribs (24)

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Spine (26 bones) 

• 7 Cervical vertebrae 

• 12 Thoracic 

• 5 Lumbar 

• Sacrum 

• Coccyx  

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ADULT APPENDICULAR SKELETON (126): 

Upper Extremity (32 bones each)

• Shoulder Girdle (2)​

• Arm (3)​

• Wrist (8)

• Hand/Fingers (19)

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Lower Extremity (31 bones each)

• Pelvic Girdle (3 fused) 

• Femur

• Patella  

• Tibia

• Fibula

• Ankle (7)

• Foot (19)

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