Terms in this set (28)
Dopamine, norepinephrine, and acetylcholine are all
neurotransmitters that excite or inhibit a neural
signal across a synapse
The primary effect of the myelin sheath is to
increase the velocity of conduction of the action
potential along the axon
Which of the following correctly describes the firing of neurons?
an all-or-none response
Which of the following occurs when a neuron is stimulated to its threshold?
The movement of sodium and potassium ions across the membrane creates an action potential
Painkilling substances produced by the brain are known as
Activation of the sympathetic branch of theautonomic nervous system results in
increase in respiratory rate
The role of the parasympathetic division of the autonomic nervous system is to
prepare the body to cope with stress
Which of the following is incorrectly matched with the hormone that it secretes?
Which of the following is true of the reticular activating system?
regulates levels of arousal
The thalamus processes information for all of the following senses except
Which of the following allows the examination of living brain tissue visually without performingsurgery?
computerized axial tomography
Which of the following is a brain-imaging technique that produces the most detailed picture of brain structure?
Which of the following parts of the brain is most active in decision-making?
People who have experienced severe damage to the frontal lobe of the brain seldom regain their ability to
make and carry out plans
Stimulation of portions of the left temporal lobe of the brain during surgery will cause the patient to
The occipital lobes contain
the primary visual cortex
Which of the following areas of the body has the largest number of sensory neurons?
For most people, speech functions are primarily localized in the
For most people, which of the following is anactivity based in the right hemisphere of the brain?
simple spatial reasoning
language comprehension, practical concrete, a literal interpretation of language
intuitive, sees big picture, notices subtle differences, recognizing pictures, musical, recognizing peoples faces
each hemisphere controls
the opposite side of the body
right hemisphere makes the
overall meaning of a word or phrase or idea
only __% of all people are intuitive
30%. right hemisphere dominant
what plays a role in determining left or right handed?
left handed is more common in
people with reading disabilities and people who are highly creative such as leo da vinci, ben franklin
left handers are more likely to
suffer from headaches and allergies, as well as die younger
split brain operations
alters visual perception but personality remains unchanged
successful in severe cases of epilepsy
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