Human skeleton system
Human Skeletal System
Definition:
The human skeletal system is the framework of the body made of bones, cartilage, ligaments, and joints. It gives shape to the body, protects organs, and helps us move.
Main Parts of the Skeletal System
Bones – Hard structures that form the body framework.
Cartilage – Soft and flexible tissue that reduces friction between bones.
Ligaments – Strong bands that connect bones to other bones.
Joints – Places where two or more bones meet.
Functions of the Skeletal System
Support – Gives shape and support to the body.
Protection – Protects important organs like the brain, heart, and lungs.
Movement – Works with muscles to help the body move.
Blood Cell Production – Bone marrow produces red and white blood cells.
Mineral Storage – Bones store minerals such as calcium and phosphorus.
Types of Bones
Long Bones – Femur, humerus
Short Bones – Wrist and ankle bones
Flat Bones – Skull and ribs
Irregular Bones – Vertebrae
Axial Skeleton The axial skeleton forms the central part of the body. It includes the skull, spine, ribs, and sternum.
Appendicular Skeleton The appendicular skeleton includes the bones of the arms, legs, shoulders, and hips. It helps the body move.
Interesting Facts
An adult human has 206 bones.
Babies are born with about 270 bones.
The femur is the strongest bone in the body.
The smallest bone is in the ear.