Human body
Definition
The human body is the complete structure of a human being, made up of different parts like cells, tissues, organs, and systems that work together to keep us alive and healthy.
Main Details
The body is made of trillions of cells (the smallest living units).
Cells form tissues, tissues form organs, and organs form organ systems.
There are 11 major organ systems (like digestive, respiratory, nervous, etc.).
The body has 78 organs such as the heart, brain, lungs, and liver.
The brain controls everything in the body.
The heart pumps blood all around the body.
The skeleton gives shape and support.
The muscles help us move.
The body needs food, water, oxygen, and rest to stay healthy.
Examples (Parts of the Body)
Head – brain, eyes, ears
Chest – heart, lungs
Abdomen (stomach area) – liver, stomach, intestines
Limbs – arms and legs for movement
Skin – protects the whole body
Interesting Points
Your body works 24 hours a day, even when you sleep.
The brain sends millions of signals every second.
Blood travels through thousands of kilometers of blood vessels.
The body can heal itself (like cuts getting better).
Each person's body is unique.