Across
- 6. Continuous physical force exerted on or against an object by something in contact with it.
- 9. Any of a group of hormones secreted within the brain and nervous system and having a number of physiological functions.(pl)
- 10. A hormone that increases rates of blood circulation, breathing, and carbohydrate metabolism and prepares muscles for exertion.
- 11. Relating to the heart and blood vessels.
- 12. feelings of severe discouragement and gloom.
- 13. Absolutely necessary; essential.
Down
- 1. Spread from one person or organism to another, typically by direct contact.
- 2. Regular sleeping problems.
- 3. Feelings of anger or antipathy resulting in hostile or violent behaviour; readiness to attack or confront.
- 4. It happens when a part of the heart muscle doesn't get enough blood.
- 5. The chemical processes that occur within a living organism in order to maintain life.
- 7. Relax after a period of work or tension.
- 8. Treat with cruelty or violence, especially regularly or repeatedly.