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Biological Psychology ch 2

Terms in this set (20)

What is the name of the support cells of the nervous system involved in tissue repair and in the formation of myelin (among other functions)?
Gila
An action potential is:
a large, brief reversal in the polarity of a membrane.
Neurons:
Have only one axon
The part of the neuron that carries information to other neurons and transmits an action potential can be divided into separate branches, called:
Collaterals
The speed at which nerve impulses travel down an axon are greatly increased by:
myelin
Neurons selectively respond to certain types of information in the environment. How is this manifested?
The frequency of the action potential is greater for certain types of information
Which of the following statements about the action potential is FALSE?
Once generated, another action potential can occur immediately afterwards
When the neuron is at rest, ______ channels are normally closed, whereas ______ is free to enter and leave the cell.
Na+, K+
There are approximately how many neurons in the human brain?
100 billion
What is another term of reference that could also mean ""superior""?
Dorsal
What is a branching structure in a neuron that carries information to other neurons and transmits an action potential?
Axon
Which lobe of the brain is the most posterior?
occipital lobe
The ventral portion of a structure is sometimes called:
inferior
What term denotes a sudden change (depolarization and repolarization) in the electrical properties of the neuron membrane?
Action potential
The chemical signals released into the synaptic cleft by a neuron are called:
neurotransmitters
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