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AP chapter 2

Phrenology highlighted the presumed function of ... ?

Specific Brain Regions

The person mosst likely to suggest that the shape of a person's skull indicates the estent to which that individual is argumentative and aggressive would be a :

phrenologist

Dr. Wolski does research on the potential relationship between neurotransmitter deficiencies and mood states. Which psycological specialty does Dr. Wolski's research best represent?

Biological Psychology

A biological psychologist would be most interested in the relationship between :

body chemistry and violent behavior

Dendrites are branching extensions of

neurons

the function of dendrites is to :

receive incoming signals from other neurons

An axon is :

the extension of a neuron that carries meassages away from the cell body

The longest part of a motor neuron is likely to be the :

Axon

In transmitting sensory information to the brain, an electrical signal within a signal neuron travels from the :

Dendrites to the cell body to the axon

The speed at which a neural impulse travels is increased when the axon is encased by a(n) :

Myelin Sheath

Neural impulses may travel as rapidly as

200 miles per hour

A brief electrical charge that travels down the axon of a neuron s called the :

Action potential

The depolarization of a neural membrane creates a(n)

Action Potential

An action potential is generated by the movement of

Ions

The resting potential of an axon results from the fact that an axon membrane is :

selectivley permeable

resting potential is to action potential as ____ is to ____

polorization is to depolorization

With regard to the process of the neural transmission, a refractory period refers to a time interval in which :

Positively charged atoms are pumped back outside a neural membrane.

The minimum level of stimulation required to trigger a neural impulse is called the :

Threshold

Increasing excitatory signals above the threshold for neural activation will not affect the intensity of an action potential. This indicates that a neuron's reaction is :

an all-or-none response

A slap on the back is more painful than a pat on the back because the slap triggers :

More frequent neural impulses

Sir Charles Sherringtion observed that impulses took more time to travel a neural pathway than he might have anticipated. His observation provided evidence for the existence of :

Synaptic Gaps

A synapse is a(n)

a junction between a sending neuron and a recieving neuron

The chemical messengers released into the spatial junctions between neurons are called:

neurotransmitters

Neurotransmitter is to ion as ____ is to ___

Molecule is to atom

Neurotransmitters are released from vesicles located in knoblike terminals on the:

Axon

Reuptake refers to the:

Reabosrotion of excess neurotransmitter molecules by a sending neuron

Research on neurotransmitters indicates that :

Neurotransmitters can inhibit neural impulse transmission

Alzheimer's disease is most closely linked to the loss of neurons that produce :

acetylcholine

Epinephrine is to hormone as acetylcholine is to

neurotransmitter

schizophrenia is most closley linked with excess receptor activity for the neurotransmitter :

dopamine

An undersupply of serotonin is most closely linked to:

Depression

Gaba is to glutamate as ___ is to ___

inhibitory neurotransmitter is to excitatory nuerotransmitter

Migraine headaches are most closely linked with an ____ of ____

oversupply of glutamate

Transferring messages froma motor neuron to a leg muscle requires the neurotransmitter known as :

acetylcholine

Botulin poisoning from improperly canned food causes paralysis by blocking the release of :

acetlycholine

Endorphines are :

Neurotransmitters

Opiate drugs occupy the smae receptor sites as :

Endorphins

Jose has just played a long, bruising football game but feels little fatigue or discomfort. His lack of pain is most likely caused by the release of :

endorphins

Hormone is to neurotransmitter as epinephrine is to:

Endorphins

Th body's natural production of endorphins is likely to be ___ by heroin use and ___ by acupuncture

decreased;increased

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