The document defines and describes several key body parts and senses. It defines the brain as the mass of nerve tissue in the head, the iris as the colored round part of the eye, and muscle as tissue that contracts. It identifies neurons as special cells that send commands to muscles. The skeletal system is defined as bones of humans or animals, and the skull as the bony framework of the head. Finally, it lists the five senses as sight, hearing, smell, taste and touch.

1. relation
It is most important organ in our body

2. Brain
The mass of nerve tissue in the head

3. iris
Round colorued part of your eye

4. muscle
Tissue composed of long cells to
contract

5. Special cell that is
capable of sending
commandsto muscle
Neuron

6. Skeletal
system
Bones of humans or
animals

7. Skull
The bony framwork of
the head

8. Smell
Give off or have on odor

9. Taste buds
Sense organs that detect
taste

10. Senses
1-Sight
2-Earing
3-Smell
4-Taste
5-Touch