1. STARTER #3 1.Label the cavities to the right a. b. c. d. 2.What type of tissue is this? 1.What type of tissue lines organs and cavities?

2. NERVOUS SYSTEM I PP 1016-1024

3. FUNCTION Network of neurons that communicate and control the body through electrical impulses Includes neurons, brain and spinal cord

4. NEURONS

5. Axons: extension of cell body Axon terminal: end of the axon Dendrites: receive messages from other neurons

6. NEURONS Dendrites: receive messages from other neurons Synapse: gap between neurons

7. NEURONS Myelin sheath: lipid layer around axon (insulator)

8. WHAT DO YOU SEE?

9. TYPES OF NEURONS 1.Sensory (5 types) – carry information from the senses back to the brain 2.Motor – brings message from CNS to muscles/glands. 3.Interneurons – connect sensory and motor and carry impulses between them.

10. SENSORY RECEPTORS ( 5 TYPES) Neuron that detects stimuli.

11. MECHANORECEPTORS Detect pressure and movement Sense: Hearing and touch

12. THERMORECEPTOR Detect temperature

13. PAIN RECEPTOR Detect tissue damage

14. CHEMORECEPTORS Detects chemicals Sense: Smell and taste

15. Are the lines straight or crooked?

16. PHOTORECEPTOR Respond to variation in light Sense: sight

17. ASSIGNMENT Nervous System Microslides