Locomotion & Movement

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HÜMÅÑ SKËLËTÅL SÝSTËM

3

2

1

It consists of a framework of bones (206) & few

cartilages.

Human skeletal system has 2 parts: axial &

appendicular. This system has significant role in

movement shown by the body.

Bone has a very hard matrix due to calcium salts in

it and the cartilage has slightly pliable matrix due to

chondroitin salts.

ÅXÏÅL SKËLËTÅL SÝSTËM (80 BØÑËS)

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Includes Skull, Vertebral column, Sternum and Ribs.

Å. SKÜLL (29 BØÑËS)

Parietal

bone

Frontal bone

Temporal

bone

Occipital

bone

Occipital

condyle

Sphenoid bone

Ethmoid bone

Lacrimal bone

Nasal bone

Zygomatic bone

Maxilla

Mandible

Hyoid bone

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It includes

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Cranial bones (8): Include Frontal (1), Parietals (2), Temporals (2),

Occipital (1), Sphenoid (1) & Ethmoid (1).

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Facial bones (14): Include Nasal bone (2), Maxillae (2), Zygomatic bone

(2), Lacrimals (2), Palatines (2), Inferior nasals (2), Mandible (1) and

Vomer (1).

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Hyoid bone (1): U-shaped bone seen below buccal cavity.

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Ear ossicles (3 x 2 = 6): Malleus (2), Incus (2) & stapes (2).