psych unit 2 test 2
what happens when a neuron sends a signal
The neuron goes from being negatively charged to briefly being positively charged, and finally returns to being negatively charged again. The magnitude of the negative charge is fixed regardless of the strength of the input signal it receives.
an adult with a healthy sleep cycle is most likely to enter REM cycle
after cycling through the NREM sleep stages
a neuron sends a signal along its
axon
antagonists function is
blocking receptors to prevent other neurotransmitters from binding to the neural receptors
the medulla oblongata is a part of the
brain stem
which hormone is released when a person is under stress
cortisol
which of the following best describes a major role of the thalamus
it relays most sensory signals to the cortex
carl wernicke discovered the region of the brain that id responsible for
language comprehension
the fatty casing that helps speed up the neural transmissions of a neuron is called the
myelin sheath
the parietal lobe is most involved in
processing sensory information
The idea that there is a part of the mind that is not directly accessible to awareness but still drives a person's thinking and behavior is most directly attributable to
sigmund freud
Waking up frequently, loud snoring, silent pauses in breathing, and sleepiness during the day are symptoms of
sleep apnea
michael gassaniga is best known for
studying split brain patients
if a body does not have enough potassium, how might that affect neuronal firing
the neurons will struggle to fire because there will not be enough positively charged ions to trigger the firing of the neuron
at a synapse, neurotransmitters released by the sending neuron do which of the following
they bind to receptors at the receiving neuron, which opens ion channel
what effect do agonists have
they increase the likelihood that a postsynaptic neuron will fire
the phenomenon of declining physiological effects of taking a drug after sustained use is referred to as
tolerance
A drug that is used to treat seizures functions by preventing inhibitory neurotransmitters from returning to the presynaptic neuron. This slows the rate of neurons firing by increasing the amount of the inhibitory neurotransmitter in the synapse. The drug is most likely to be classified as a
GABA reuptake inhibitor (GRI)
the psychodynamic theory of dreaming would postulate that
dreams fulfill unconscious wishes
the hormone most associated with the fight or flight response is
epinephrine
a person whose body is not producing enough testosterone is most likely to exhibit
fatigue