exam 2 review questions Flashcards
T or F: nicotinic acetylcholine receptors are G-protein linked
false
T or F: cells that make either epinephrine or dopamine always contain PMNT
FALSE
** true for epinephrine but false for dopamine
what is taken up by the presynaptic cell?
dopamine and serotonin
which of the following act through G protein coupled receptors?
- peptide NTs
- dopamine
- acetylcholine
- serotonin
molecules are classified as a NT if…
- being released by presynaptic cells in a Ca2+ dependent way
- must be made in presynaptic neuron
to stimulate signaling at a synapse one would
- reuptake
- apply agonist
which of the following is false:
- transmitter gated channels usually have 5 subunits
- gate either anions or cations but NOT both
- structure influences function
ALL ARE TRUE
which of the following is false regarding G protein coupled receptors:
- signal slower than ligand gated receptors
- signaling through the same receptor can have multiple actions
- always present only on postsynaptic cells
- have 4 transmembrane regions
- always present on postsynaptic cells
- have 4 transmembrane regions
dorsal roots that connect to the spinal cord carry what information?
afferent, sensory
ventral roots carry what kind of information?
efferent, motor
which of the following is incorrect during forebrain differentiation?
most CNS cells are differentiated before they migrate to brain surfaces
diencephalon becomes…
thalamus and hypothalamus
nervous system develops from which layer?
ectoderm
T or F: lateral ventricles are surrounded by the telencephalon
true
which of the following is incorrect?
- entire CNS derives from the walls of the neural tube
- failure of the neural tube to close results in anencephaly or spina bifid a
- three primarary vesicle are telencephalon, mesencephalon, rhombencephalon
three primarary vesicle are telencephalon, mesencephalon, rhombencephalon
T or F: olfactory information is conveyed only by which receptors are activated (population coding)
true
why are we able to detect bitter so well?
- many types of bitter receptors
- uses labeled lines
- sensitive to low levels of bitter
Tor F: taste receptor cells for each tasrte are distributed in specific areas of the tongue
false
T or F: olfactory receptors cells express multiple types of receptors
false
T or F: bending of the stereocilia on hair cells cause Na to enter and depolarize
false
* it’s K+
T or F: G-proteins are used in the detection of salt
false
which tastes use G-protein receptors?
- bitter
- sweet
- umami
what is the function of the muscles that attach to the ossicles?
attenuate loud sounds
someone with a stroke in the right primary auditory cortex will be
in normal hearing range but trouble localizing sound
T or F: loudness (intensity) is determined only by the firing rate of spiral ganglion cells
false
which is false regarding the vestibular system:
• controls eye movement
• uses hair cells
• detects head tilt, linear and rotational acceleration
• uses cranial never VII (vestibular nerve) to transmit signals
uses cranial never VII (vestibular nerve) to transmit signals
