Definition unit 2
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The document defines and describes several key parts and systems of the human body including the brain, iris, muscles, neurons, skeletal system, skull, senses, nervous system, and muscular system. It notes that the brain is a mass of nerve tissue in the head, muscles contract and relax to produce movement, and there are five main senses: sight, hearing, smell, taste, and touch. It also provides details on the main parts of the nervous system and indicates there are 206 bones that make up the skeletal system.
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Definition unit 2
- 1. Human Body Relation It is the most importans organ in our body.
- 2. Brain The mass of nerve tissue in the head
- 3. Iris Round coloured part of your eye
- 4. Muscle Tissue composed of long cells to controct or relax to produce movements
- 5. Neuron Special cell that is capable of sending commands to muscles
- 6. Skeletal System Bones of humans or animals
- 7. Skull The bony fromework of the head
- 8. Smell Give off or have and odor
- 9. Taste Sense organs that detect taste
- 12. Skeletal System The bones,joints,ligaments and cartlage in our body from our skeleton. Thera are 206 bones in our body.
- 13. Muscular System We have three types of muscles: skeletal, smooth and cardiac