Across
- 1. dioxide – A waste gas produced by cells during metabolism that must be removed from the body
- 3. system – The system responsible for transporting oxygen, nutrients, and carbon dioxide throughout the body.
- 4. – The gas required by body cells for energy production.
- 6. – The widening of blood vessels to release heat and increase blood flow to the skin.
- 7. glands – Structures that produce sweat to help cool the body during hot conditions.
- 8. system – The system responsible for taking in oxygen and expelling carbon dioxide.
Down
- 1. – Specialized sensors that detect changes in oxygen and carbon dioxide levels in the blood.
- 2. – The narrowing of blood vessels to conserve heat in cold conditions.
- 5. – The body’s ability to maintain a stable internal environment despite external changes.