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21 Cards in this Set
- Front
- Back
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The _______________ and ____________ are the receiving areas of a neuron where information from other neurons is accepted.
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dendrites, soma
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Nerve impulses are carried down the __________________ to the ______________ _______________________.
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axon, axon terminals
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# The ______________ potential becomes a(n) ______________ potential when a neuron passes the threshold for firing.
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resting, action
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# Neuropeptides are transmitter substances that help regulate the activity of neurons. T or F?
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T
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# The somatic and autonomic systems are part of the ______________ nervous system
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peripheral
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Sodium and potassium ions flow across the synapse to trigger a nerve impulse in the receiving neuron. T or F?
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F
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# The simplest behavior sequence is a _____________ ____________.
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reflex arc
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The parasympathetic nervous system is most active during times of high emotion. T or F?
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F
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9. What effect would you expect a drug to have if it blocked passage of neurotransmitters across the synapse?
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Such a drug could have wide-ranging effects. If the drug blocked excitatory synapses, it would depress brain activity. If it blocked inhibitory messages, it would act as a powerful stimulant.
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Which of the following research techniques has the most in common with clinical studies of the effects of brain injuries?
a. EEG recording b. deep lesioning c. microelectrode recording d. PET scan |
B
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CT scans cannot determine which part of your brain plays a role in speech because CT scans
a. use X-rays b. reveal brain structure, not brain activity c. reveal brain activity, not brain structure d. use magnetic fields |
B
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_________________ links brain structures to brain functions.
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Localization of function
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People only use 10 percent of their brain capacity. T or F?
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F
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Deep lesioning is used to ablate an area in the hypothalamus of a rat. After the operation, the rat seems to lose interest in food and eating. Why would it be a mistake to automatically conclude that the ablated area is a “hunger center”?
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Because other factors might explain the apparent loss of appetite. For example, the taste or smell of food might be affected, or the rat might simply have difficulty swallowing. It is also possible that hunger originates elsewhere in the brain and the ablated area merely relays messages that cause the rat to eat.
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# Three major divisions of the brain are the brainstem or _____________________, the _____________________, and the ___________________.
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hindbrain, midbrain, forebrain
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# Reflex centers for heartbeat and respiration are found in the
a. cerebellum b. thalamus c. medulla d. RF |
C
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# A portion of the reticular formation, known as the RAS, serves as an ______________ system in the brain.
a. activating b. adrenal c. adjustment d. aversive |
A
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The _____________ is a final relay, or “switching station,” for sensory information on its way to the cortex.
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thalamus
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“Reward” and “punishment” areas are found throughout the _____________ system, which is also related to emotion.
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limbic
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Undersecretion from the thyroid can cause both a. dwarfism b. gigantism c. obesity d. mental retardation
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c, d (in infancy)
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# The body’s ability to resist stress is related to the action of the adrenal _________________.
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cortex
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