Across
- 4. nervous system Contains the brain and the spinal cord.
- 6. A collection of fibers that use electrical and chemical messages to transmit sensory/motor information from the brain to other parts of the body.
- 8. This is a large part of the peripheral nervous system as every nerve cell has one in order for electrical impulses to bit sent and received.
- 9. A branch-like structure that receives many electrical and chemical impulses from the axons of other neurons. The impulses come through this structure to the axon; this is how information travels around the body.
- 10. Constant internal environment. The body keeps internal biological processes the same this includes things such as body temperature and water levels within the body.
Down
- 1. cord It is connected to the brain by large amounts of nervous tissue, this nervous tissue transmits impulses to and from the brain, and this allows the body to carry out vital processes in order to function effectively.
- 2. Sheath This substance surrounds axons; it serves as an electrical insulator, which allows electrical impulses to be channeled to the correct nerve endings.
- 3. nervous system Connects the central nervous system to sensory organs such as the eyes and ears.
- 5. A major part of the central nervous system, it is largely made up of neurons and glial cells. It is responsible for the distribution and organisation of information that the body needs to carry out biological processes such as respiration.
- 7. Chemical substances that are mainly produced by glands that are located within the body, they control and regulate the activity of certain cells and organs. They are also essential for many biological processes such as digestion, metabolism, growth, reproduction and mood control.