Across
- 3. system this includes the heart, arteries, veins and capillaries and involves the circulation of blood around the body
- 5. regular exercise will increase the bodies ability to tolerate this. The chemical equation for this is CH3CH(OH)COOH.
- 6. system that includes muscles, cells, tissues and organs
- 8. Muscles contract more strongly and the walls of the heart become thicker
Down
- 1. the amount of blood ejexted from the heart per beat. Measured in mL (milliliters)
- 2. A lower than normal heart rate is called what?
- 4. system that includes nasal passages, windpipe and lungs and involves the body's breathing system.
- 7. system that consists of the framework of bones that supports the body