Psych Test Unit 3 answers

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Mr. Mac's Class

the cells od the nervous system that do the work of receiving, integrating, and transmitting information are the

neurons

the correct order that information passes through in a neuron is

dendrite, soma, axon

the main function of dendrites is to

receive information

terminal buttons are located

at the end of axons

the chemicals that are secreted from the terminal buttons into the synapse are

neurotransmitters

the cells that provide structural support and insulation for neurons are called

glia

cells found in the nervous system that insulate, nourish, and direct the growth of neurons as well as remove dead neurons and waste products are known as

glia

the stable, negative charge of a neuron when it is inactive is called

resting potential

neurotransmitters are secreted from the ________ across the synapse to the dendrites

neuromodulators

an action potential is

an electrical signal that travels along the axon of a neuron

according to the __________ law, a neuron fires an action potential at only one level of intensity

all-or-none

an impulse moves from one neuron to another through the action of

neurotransmitters

synaptic vesicles are structures that

store neurotransmitters

what event causes the release of neurotransmitters into the synaptic cleft?

the arrival of the action potential at the terminal buttons

Reabsorption of neurotransmitters into the presynaptic neuron is referred to as

reuptake

an agonist

mimics the action of the neurotransmitter

an antagonist

blocks the action of the neurotransmitter

abnormalities at norepinephrine and serotonin synapses appear to play a role in...

psychological disorders

the neurotransmitter released by motor neurons that results in movement of the voluntary muscles is

acetycholine

nerves ouside the skull and spine comprise the

peripheral nervous system

the somatic nervous system and the autonomic nervous system comprise the

skeletal

______ nerves receive information, while _______ nerves carry out instructions

afferent; efferent

the _____ nervous system mobilize the body when one needs to exert tremendous energy (such as flee from an attacker)

sympathetic

the ______ is most likely to be in control of bodily processes during periods of rest and recovery for the body

parasympathetic nervous system

efferent nerve fibers transmit messages _____ the brain and spinal cord

away from

the heart, glands, and smooth muscles are controlled by the

autonomic nervous system

the "flight or flight" response is a direct result of activation of the

sympathetic nervous system

the structure that connects the two cerebral hemispheres is the

corpus callosum

in which of the lobes od the cerebrum is the somatosensory cortex located?

parietal

theodore suffered a stroke recently, and now he finds that he constantly hears a buzzing sound in his ears. IN this case, it is likely that the stroke occurred in theodore's

temporal lobe

the primary visual cortex is located in the

occipital lobe

the primary motor cortex is located in the

frontal lobe

which of the following statements concerning plasticity in the brain is FALSE?

older brains show more plasticity than younger brains

the area of frontal lobe that plays an important role in the production of speech is called

broca's area

for most people, the production of language resides in the

left cerebral hemisphere

surgically disconnecting the cerebral hemispheres has its origina in the treatment of

epilepsy

if the left hemisphere of the brain were damaged, which part of the body would be MOST directly affected?

the right half

because the speech center is generally located in the left hemisphere of the brain, a split-brain patient is unable to describe the stimuli that are

seen in the left visual field

the brain structure involved in the comprehension of speech is

wernicke's area

which of the following parts of the brain is MOST likely to play a major role in the work of artists, architects, and engineers, who must rely heavily on visual-spatial skills?

the right hemisphere

which of the following is determined at the conception and is fixed forever?

genotype

sally has blue eyes and blond hair. genetically, this description refers to Sally's

phenotype

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