Chapter 5

Biological Psychology · 10 exercises

Problem 1

Which develops first, a neuron's axon or its dendrites?

3 step solution

Problem 2

In which brain areas do new neurons form in adults?

4 step solution

Problem 8

What class of chemicals prevents apoptosis?

4 step solution

Problem 9

At what age does a person have the greatest number of neurons - before birth, during childhood, during adolescence, or during adulthood?

6 step solution

Problem 10

Anesthetic drugs increase inhibition of neurons, blocking most action potentials. Why would we predict that exposure to anesthetics might be dangerous to the brain of a fetus?

4 step solution

Problem 16

What are the two kinds of stroke, and what causes each kind?

3 step solution

Problem 20

Is collateral sprouting a change in axons or dendritic receptors?

4 step solution

Problem 21

Is denervation supersensitivity a change in axons or dendritic receptors?

4 step solution

Problem 22

Cite an example in which reorganization of the brain is helpful and one in which it is harmful.

3 step solution

Problem 23

Suppose someone has suffered a spinal cord injury that interrupts all sensation from the left arm. Now he or she uses only the right arm. Of the following, which is the most promising therapy: electrically stimulate the skin of the left \(\operatorname{arm},\) tie the right arm behind the person's back, or blindfold the person?

6 step solution

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