1. Unit 2 Vocab Body Systems Unit

2. Cells
Smallest unit of an organism that can perform life functions, basic unit of life.

3. Transports nutrients and oxygen to the body
Circulatory system
Transports nutrients and oxygen to the body

4. Digestive system
Breaks down food to provide nutrients and energy; gets rid of solid waste.

5. Excretory system
Removes waste from the body, urinary system is part of the excretory system

6. Muscular system
Provides movement of the body; consists of skeletal, smooth and cardiac muscles

7. Nervous system
Controls and coordinates the body’s activities; sends messages to and from the brain, spinal cord and nerves

8. Neurons
Nerve cell, carries messages between the brain and other parts of the body

9. Organ
Structure in an organisms, made of two or more tissues which has a specific function

10. A living thing – consisting of a single cell or multiple cells
Organism
A living thing – consisting of a single cell or multiple cells

11. A group of organs that work together to perform one or more functions
Organ system
A group of organs that work together to perform one or more functions

12. Muscular contractions that move food through the digestive system
Peristalsis
Muscular contractions that move food through the digestive system

13. Exchanges oxygen and carbon dioxide
Respiratory system
Exchanges oxygen and carbon dioxide

14. A sensory nerve – has a nerve ending that responds to stimulation
Sensory receptors
A sensory nerve – has a nerve ending that responds to stimulation

15. Specialized cells
Special cells in multicellular organisms that are modified to carry out a particular function

16. system
Interacting, interrelated, or interdependent elements forming a more complex whole

17. A group of cells that work together to do a specific job
Tissue
A group of cells that work together to do a specific job