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Skeleton system divisions
Axial and appendicular
80
Number of bones in the axial skeleton
126
Number of appendicular skeleton bones
206
Number of bones in the adult human body
Axial skeleton
1. Skull
2. Vertebrae
3. Sternum
4. Ribs
29
Number of skull bones
Skull bones
1. Cranium
2. Face
3. Ear
4. Hyoid
8
Number of cranial bones
Cranium bones
1 frontal
1 occiptal
2 parietal
2 temporal
1 sphenoid
1 ethmoid
14
Number of face bones
Face bones
2 zygomatic
1 mandible
6
Number of ear bones
Ear bones
2 malleus or hammer
2 incus or anvil
2 stapes or stirrup.
26
Number of vertebral bones
Vertebral bones
1. Cervical
2. Thoracic
3. Lumbar
4. Sacrum
5. Coccyx
7
Number of cervical vertebrae
Cervical bones
1. C1 or atlas
2. C2 or axis
3. C3
4. C4
5. C5
6. C6
7. C7
12
Number of thoracic vertebrae
5
Number of lumbar vertebrae
1
Number of sacral bones
Sternum
1. Manubrium
2. Body
3. Xiphoid process
24
Number of rib bones
True and False, including floating)
Rib bone types
14
Number of true ribs
10
Number of false ribs including 4 floating ribs
Appendicular skeleton groups
1. Shoulder girdle
2. Upper extremities
3. Pelvic girdle
4. Lower extremities
4
Number of shoulder girdle bones
2 clavicles and 2 scapulae
Names of the shoulder girdle bones
60
Number of upper extremity bones
2 humerus, 2 radius, 2 ulna, 16 carpals, 10 metacarpals, 28 phalanges.
Names of the upper extremity bones
16
Number of carpals
10
Number of metacarpals or metatarsals
28
Number of phalanges in the feet or hands
2
Number of pelvic girdle bones
Pelvic bone, AKA: innominate bone or os coxae
Three different names for the 2 pelvic girdle bones
Ilium, ischium, and pubic bone
3 fused bones that make one pelvic bone
60
Number of lower extremity bones
2 femur, 2 patella, 2 tibia, 2 fibula, 14 tarsals, 10 metatarsals, and 28 phalanges
Names of lower extremity bones
14
Number of tarsal bones