1. Nervous System

3. Neuron

4. Neuron

5. Neurons

14. Schwann cells and the Oligodendroglia. 

15. Myelin Sheath

20. A Baby’s Brain

21. Electrical Signal down axon
Resting State

22. Electrical Impulse Action Potential (1)
Action Potential (2)

24. Types of Impulse Transmission
Continuous Conduction

25. Types of Impulse Transmission
 Saltatory Conduction

26. Types of Impulse Transmission

27. Synapse Axon terminal Axon of transmitting neuron
Vesicles
Synaptic cleft
Action potential arrives
Synapse
Axon of transmitting neuron
Receiving neuron

28. Neurotransmitters Transmitting neuron
Axon terminal
Vesicles
Synaptic cleft
Action potential arrives
Synapse
Axon of transmitting neuron
Receiving neuron
Vesicle fuses with plasma membrane
Ion channels
Transmitting neuron

29. Neurotransmitters

30. Neural Networks
Neural networks - formed when several neurons link together to form a pathway. 
critical to the functioning of the body. 
different types of neural networks. examples:
divergent circuit, a single neuron sends impulses to several other neurons.  This allows information to be disseminated to many areas simultaneously to allow a coordination of activities.
convergent circuit, several neurons send information to a single neuron.  This type of circuit will allow information from a number of sources to be processed in one central location.
reverberating circuit cycles the impulse back through the neural network.  This continues to restimulate the neurons near the beginning of the neural network and keeps the information cycling through the network.  This type of circuit is involved in short-term memory.