1. Draw a neuron and label as many parts as you can.
WARM UP
Explain what parts of the nervous system represent the cell, tissue, and organ levels of organization.
Draw a neuron and label as many parts as you can.

2. WARM UP
Give an example of each of the following from the nervous system:
A cell
A tissue
An organ
How do neurons work together to signal your arm to move when you touch a hot stove?

3. Nerve Pathways

4. General Pathway
Stimulus received/sensed by sensory neurons

5. General Pathway Message processed by interneurons
Brain (integrated thought)
Spinal cord (reflex arc)

6. General Pathway
Response sent through motor neurons

7. Divisions of the Nervous System
Central
Brain and spinal cord

8. Divisions of the Nervous System
Peripheral
Cranial and spinal nerves
All other nerves

9. Divisions of the Nervous System
Peripheral
Somatic
Conscious control
Autonomic
Internal organs

10. Divisions of the Nervous System
Autonomic
Parasympathetic : “Housekeeping” tasks
Sympathetic : Control in times of heightened stimuli

11. Sensory Pathways Detect stimuli Notify brain and spinal cord
Use many types of receptors…

12. Sensory Pathways
Chemoreceptors
Chemicals
Senses of taste and smell

13. Sensory Pathways
Mechanoreceptors
Pressure
Sense of touch and hearing

14. Sensory Pathways
Photoreceptors
Light
Sense of sight

15. Sensory Pathways
Thermoreceptors
Heat
Sense of touch

16. Sensory Pathways
Nociceptors
Pain

17. WRAP UP
List the 5 kinds of receptors and what they do.