1. AP Psychology Sept. 6th Objective Opener
1. In the video, Phineas Gage is described a a/n
2. Which part of the brain is the emotional part?
3. What can make behavior become erratic and unpredictable?
4. What parts of Phineas Gage’s brain were damaged by the tamping iron?
Objective
Opener
Know the anatomy and function of neurons by building and labeling a Candy neuron.
Turn in FRQ re-write
AP Psychology Sept. 6th

2. Neuron
1. Neurons receive messages from other neurons through short fibers, called dendrites
2. A longer fiber, called an axon, carries outgoing messages from the cell
3. Some axons are covered with a myelin sheath, made up of glial cells; this increases neuron efficiency and provides insulation
4. Neurotransmitters are released at the terminal buttons
A group of axons bundled together forms a nerve or tract
Morris, (c) 2006, Prentice Hall

3. Neurons – magnified view

4. Neuron – another view

5. Three Types of Neurons Sensory (afferent) neurons:
Carry messages from sense organs to the spinal cord or brain
Motor (efferent) neurons:
Carry messages from the spinal cord or brain to the muscles and glands
Interneurons (association neurons):
Carry messages from one neuron to another
Morris, (c) 2006, Prentice Hall

6. Glial Cells
The nervous system also contains glial cells, or glia, which:
Hold neurons in place, provide nourishment, and remove waste
Prevent harmful substances from passing from the bloodstream into the brain
Form the myelin sheath
The nervous system also contains a vast number of glial cells or glia
Glial cells hold neurons in place, provide nourishment, and remove waste products
Glial cells prevent harmful substances from passing from the bloodstream into the brain
Glial cells form the myelin sheath that insulates and protects neurons
Morris, (c) 2006, Prentice Hall

7. Building a Candy Neuron
Follow Directions
45 min
Each group will make 2 neurons
They will be placed end to end to demonstrate neural transmission.

8. Homework
Neurons and Toilets Analogy Worksheet.