1. The Importance of the Nervous System
Image from:

2. Neurons Functional unit of nervous system
Image from:

3. Neuron Signalling
stimulus reception by afferent neurons (sensory neurons)
message transmission by afferent neurons to interneurons
integration of neural messages in interneurons
response transmission by efferent neurons to effectors

4. Structure of Neuron
Image from:

5. Neuron Support System
glial cells (such as Schwann cells) provide nutrition and support
Schwann cells form myelin sheaths which surround and insulate axons; gaps between Schwann cells are called nodes of Ranvier

6. SOMATIC controls skeletal muscle, bones, skin
Image from:
SOMATIC controls skeletal muscle, bones, skin
Somatic division is VOLUNTARY
composed of SENSORY nerves (relay information about envi’t to the CNS) and MOTOR nerves (initiate the appropriate response)

7. Neural Circuits - Reflex Arc
(Image from:
receptor, afferent neuron, interneuron, efferent neuron, effector