Classification of bones, types of bones

 Types of Bones
Long bones:- These serve as levers for the muscle action. E.g. Femur, tibia, fibula, humerus, radius, ulna etc. 

Short bones:- their shape is usually cuboid, (like a cube) or scaphoid (boat shaped). E.g. Tarsal and carpal bones

Flat bones:-These consists of parallel layer of compact bone separated by a thin layer of cancellous bone tissue E.g. scapula, skull, pelvic bone etc. 

Irregular bones:- These have a peculiar and irregular shape and are unique in their appearance and function. E. g Hip bone, bones in base of skull, e. g. Sphenoid & 1st &2nd cervical vertebrae

Pneumatic bones:- Certain irregular bones contain large air spaces lined by epithelium E. g. Maxilla, sphenoid, ethmoid, etc., 

Sesamoid bones:- These are bony nodules found embedded in the tendons or joint capsules. 
E. g:- Patella in the tendon of quadriceps femoris, pisiform in the tendon of flexor carpi ulnaris, flabella in the tendon of lateral head of gastrocnemius,riders bone etc.., 



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