4. Brain WHAT PARTS DO YOU KNOW THAT ARE IN THE NERVOUS SYSTEM? Spinal Cord Peripheral Nerves

5. master of control and communication system of body Controls and coordinates all essential functions

6. Function of the nervous system SENSORY FUNCTION: Nervous system uses its millions of sensory to monitor changes occurring both inside and outside of the body. Those changes are called STIMULI, and the gathered information is called SENSORY INPUT INTEGRATIVE FUNCTION: The nervous system process and interprets the sensory input ad makes decisions about what should be done at each moment- a process called INTEGRATION MOTOR FUNCTION: The nervous system then sends information to muscles, glands and organ (effectors) so they can respond correctly, such as muscular or glandular secretions.

8. How are neurons connected? Synapses!!

9. A system that controls all of the activities of the body. The nervous system is made of: The brainThe spinal cord The nervesThe senses

10. The Central Nervous System is made of the brain and the spinal cord. The Central Nervous System controls everything in the body.

12. Basic nerve cell structure

13. 3 main types of nerve cells sensory neurone relay neurone motor neurone

14. Sensory neurons Carries impulses from receptors e.g pain receptors in skin to the CNS( brain or spinal cord)

15. Relay neuron Carries impulses from sensory nerves to motor nerves.

16. Motor neuron Carries impulses from CNS to effector e.g. muscle to bring about movement or gland to bring about secretion of hormone e.g ADH

17. Transmission of signals

20. The environment is everything outside the body. The sense organs gather information from outside the body, then send the messages to the brain.

21. What do you think can change neurons and their connections? Accidents Drugs Alcohol Disease

22. Alcohol damages dendrites - can repair after abstinence Alcohol blocks receptors and slows down transmission