Definitions of unit 2
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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.
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Definitions of unit 2
- 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