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Lecture 3

PSYC 101 Lecture 3: Study Guide-Ch3BiologicalFoundationsInBehavior

Course Code
PSYC 101
Mark Palumbo

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Meghan Quinn
Dr. Mark Palumbo
Psych 101-005
17 September 2016
Lahey, Ch3: Biological Foundations in Behavior
When you have finished Chapter 3, you should be able to:
1. Understand the importance of the neuron and differentiate among the neuron's cell body, dendrite, and
The cell body contains the nucleus and other components necessary for the cells preservation and
Dendrites branch out from the cell body and receive messages from other neurons.
Axons carry messages away from the cell body and give the message to the next neuron.
Neurons transmit messages through neural transmission and synaptic transmission.
2. Describe the processes of neural transmission and synaptic transmission.
Neural transmission: transmission of the message from one end of the neuron to the other end.
Synaptic transmission: transmission from one neuron to the next neuron. The synaptic gap is a
small space between neurons in which the message travels through by neurotransmitters.
3. Describe the actions of select neurotransmitters.
Neurotransmitters are stored in synaptic vesicles located in synaptic terminals. The transmitter
will float across the gap and fits into the receptor sites like a lock or key. This changes the
polarity of the receiving neuron which will either allow the message in or prevents the message
from being received. Drugs ran affect this process.
4. Describe the functioning of glial cells.
Glial cells help neurons function by…
Glial cells grow new neurons
Transport nutrients from the blood to the neuron
Some glial cells produce myelin sheath
They can increase or decrease synaptic transmission
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