Hormones

3. the mass of nerves inside the spine that connects all parts of the body to the brain
5. an area in the central lower part of the brain that controls body temperature, hunger and the release of hormones
7. to produce a liquid substance
8. a cell that carries information within the brain and between the brain and other parts of the body; a nerve cell
9. an organ in a person’s or an animal’s body that produces a substance for the body to use; a part in the body that is similar to this, especially a lymph node

1. the organ inside the head that controls movement, thought, memory and feeling
2. chemical substance produced in the body or in a plant that encourages growth or influences how the cells and tissues function; an artificial substance that has similar effects
3. connected with your physical senses
4. a substance produced in the body when you are excited, afraid or angry. It makes the heart beat faster and increases your energy and ability to move quickly.
6. an action or a movement of your body that happens naturally in response to something and that you cannot control; something that you do without thinking