Psychology Chapter 3

Front 1

The Nervous System

Back 1

- responsible for everything we think, feel and do
- neurons: recieve, process and send information

Front 2

Types of Neurons

Back 2

- sensory- carry information toward CNS
- Interneurons- connect neurons to other neurons
- motor- carry information away from CNS (specialized for communication) other cells with chemical signals
- neurons are powered by electrical impulses; communicate with other cells with chemical signals
- three phases
1.) reception- chemical signals from other neurons
2.) Integration- incoming signals are put together
3.) transmission- signals are passed to other neurons

Front 3

Neural Signaling

Back 3

- to pass a signal down the axon neurons use action potential
- action potential (neural eiring)- electrical signal that causes the release of chemicals

Front 4

Neuron Cell Membrane

Back 4

- selectively permeable due to lipid bilayer
- small particles (some ions) can get through; big ones can't

Front 5

Protein Channels

Back 5

- channels made of protein that allow some ions through

Front 6

Resting Potential

Back 6

resting charge= -70 millivolts

Front 7

Depolarization

Back 7

positive ions rush into cell- charge is revised to 40 millivolts

Front 8

Neural Signaling

Back 8

begin action potential= 50 millivolts

Front 9

Repolarization

Back 9

channels close