exam 2 review questions

Question 1

T or F: nicotinic acetylcholine receptors are G-protein linked

Answer 1

false

Question 2

T or F: cells that make either epinephrine or dopamine always contain PMNT

Answer 2

FALSE

** true for epinephrine but false for dopamine

Question 3

what is taken up by the presynaptic cell?

Answer 3

dopamine and serotonin

Question 4

which of the following act through G protein coupled receptors?

Answer 4

• peptide NTs
• dopamine
• acetylcholine
• serotonin

Question 5

molecules are classified as a NT if…

Answer 5

• being released by presynaptic cells in a Ca2+ dependent way
• must be made in presynaptic neuron

Question 6

to stimulate signaling at a synapse one would

Answer 6

• reuptake

- apply agonist

Question 7

which of the following is false:

• transmitter gated channels usually have 5 subunits
• gate either anions or cations but NOT both
• structure influences function

Answer 7

ALL ARE TRUE

Question 8

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

Answer 8

• always present on postsynaptic cells

- have 4 transmembrane regions

Question 9

dorsal roots that connect to the spinal cord carry what information?

Answer 9

afferent, sensory

Question 10

ventral roots carry what kind of information?

Answer 10

efferent, motor

Question 11

which of the following is incorrect during forebrain differentiation?

Answer 11

most CNS cells are differentiated before they migrate to brain surfaces

Question 12

diencephalon becomes…

Answer 12

thalamus and hypothalamus

Question 13

nervous system develops from which layer?

Answer 13

ectoderm

Question 14

T or F: lateral ventricles are surrounded by the telencephalon

Answer 14

true

Question 15

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

Answer 15

three primarary vesicle are telencephalon, mesencephalon, rhombencephalon

Question 16

T or F: olfactory information is conveyed only by which receptors are activated (population coding)

Answer 16

true

Question 17

why are we able to detect bitter so well?

Answer 17

• many types of bitter receptors
• uses labeled lines
• sensitive to low levels of bitter

Question 18

Tor F: taste receptor cells for each tasrte are distributed in specific areas of the tongue

Answer 18

false

Question 19

T or F: olfactory receptors cells express multiple types of receptors

Answer 19

false

Question 20

T or F: bending of the stereocilia on hair cells cause Na to enter and depolarize

Answer 20

false

* it’s K+

Question 21

T or F: G-proteins are used in the detection of salt

Answer 21

false

Question 22

which tastes use G-protein receptors?

Answer 22

• bitter
• sweet
• umami

Question 23

what is the function of the muscles that attach to the ossicles?

Answer 23

attenuate loud sounds

Question 24

someone with a stroke in the right primary auditory cortex will be

Answer 24

in normal hearing range but trouble localizing sound

Question 25

T or F: loudness (intensity) is determined only by the firing rate of spiral ganglion cells

Answer 25

false

Question 26

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

Answer 26

uses cranial never VII (vestibular nerve) to transmit signals