Human Skeleton (Bones) – Short Notes
1. Skeleton kya hai?
- Body ka framework hota hai
- Total bones: 206 (adult)
- Functions: support, movement, protection, blood cell formation
2. Skeleton ke types
(A) Axial Skeleton (80 bones): Skull, Vertebral column, Ribs
(B) Appendicular Skeleton (126 bones): Limbs, shoulder & pelvic girdle
3. Bone ke types
- Long bones: Femur, Humerus
- Short bones: Wrist bones
- Flat bones: Skull, Ribs
- Irregular bones: Vertebra
- Sesamoid bones: Patella
4. Bone structure
- Compact bone (outer)
- Spongy bone (inner)
- Bone marrow (center)
5. Joints (Sandhi)
- Fixed joint: Skull
- Hinge joint: Knee, Elbow
- Ball & socket: Shoulder, Hip
- Pivot joint: Neck
6. Important bones
- Femur: Longest bone
- Stapes: Smallest bone
- Skull: Protects brain
- Rib cage: Protects heart & lungs
1. Skeleton kya hai?
- Body ka framework hota hai
- Total bones: 206 (adult)
- Functions: support, movement, protection, blood cell formation
2. Skeleton ke types
(A) Axial Skeleton (80 bones): Skull, Vertebral column, Ribs
(B) Appendicular Skeleton (126 bones): Limbs, shoulder & pelvic girdle
3. Bone ke types
- Long bones: Femur, Humerus
- Short bones: Wrist bones
- Flat bones: Skull, Ribs
- Irregular bones: Vertebra
- Sesamoid bones: Patella
4. Bone structure
- Compact bone (outer)
- Spongy bone (inner)
- Bone marrow (center)
5. Joints (Sandhi)
- Fixed joint: Skull
- Hinge joint: Knee, Elbow
- Ball & socket: Shoulder, Hip
- Pivot joint: Neck
6. Important bones
- Femur: Longest bone
- Stapes: Smallest bone
- Skull: Protects brain
- Rib cage: Protects heart & lungs
