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Which of the following neurotransmitters has primarily ionotropic…
Which of the following neurotransmitters has primarily ionotropic receptors?
Group of answer choices
Oxytocin
Dopamine
Glutamate
Serotonin
Flag question: Question 2Question 22 pts
The notion that the nervous system communicates using chemical messages was first demonstrated by ______ and his discovery of _________.
Group of answer choices
Camillo Golgi; epinephrine
Donald Hebb; glutamate
Santiago Ramón y Cajal; dopamine
Otto Loewi; acetylcholine
Flag question: Question 3Question 32 pts
How are drugs that are prescribed to the elderly to enhance memory and cognition similar to nerve gas that is used as a chemical weapon?
Group of answer choices
Both decrease the levels of acetylcholine in the synapse.
Both stimulate the release of glutamate.
Both elevate the levels of acetylcholine in the synapse.
Both are banned by the Geneva convention.
Flag question: Question 4Question 42 pts
Peptide transmitters are synthesized in the:
Group of answer choices
dendrites.
presynaptic terminals.
cell body.
axon.
Flag question: Question 5Question 52 pts
What is true about chemical synapses that is not true about electrical synapses?
Group of answer choices
They allow for more kinds of messages.
They transmit signals more quickly.
They represent a direct physical connection between neurons.
They send only excitatory signals.
Flag question: Question 6Question 62 pts
What do endocannibinoids and gaseous transmitters have in common?
Group of answer choices
All choices are true.
Both are packaged in vesicles for release.
Both are synthesized from the lipid membrane of the cell.
Both serve as retrograde messages.
Flag question: Question 7Question 72 pts
Receptors on the presynaptic side that are targets for the neurotransmitter the cell itself releases are called:
Group of answer choices
atypical receptors.
autoreceptors.
self-receptors.
anomolous receptors.
Flag question: Question 8Question 82 pts
Ionotropic receptors:
Group of answer choices
produce the activation of second messengers.
all answer choices are true.
change in shape when neurotransmitters bind to them.
activate G proteins.
Flag question: Question 9Question 92 pts
_____ contain the neurotransmitters to be released by the neuron.
Group of answer choices
Axons
Ribosomes
Synaptic vesicles
Dendrites
Flag question: Question 10Question 102 pts
________ acting on _________ can enhance the activation of neurons by other inputs that may normally be sub-threshold.
Group of answer choices
Glutamate; ionotropic receptors
Glutamate; metabotropic receptors
Acetylcholine; nicotine receptors
Acetylcholine; muscarinic receptors
Flag question: Question 11Question 112 pts
Which of the following statements comparing amino acid and peptide neurotransmitters is true?
Group of answer choices
Amino acid transmitters are released by neurons, peptide transmitters are only released by glial cells.
All choices are true.
Amino acid transmitters work through receptors, peptide transmitters do not.
Amino acid transmitters can change the voltage of a cell, peptide transmitters do not.
Flag question: Question 12Question 122 pts
Endocannabinoids are:
Group of answer choices
are considered as amino acid transmitters.
All of the answers are correct.
synthesized from the lipid membrane of the cell.
are excitatory neurotransmitters.
Flag question: Question 13Question 132 pts
A toxin from the Motown woolly spider causes calcium channels to remain open longer with each action potential. How might this impact synaptic transmission?
Group of answer choices
It would facilitate transmission.
It would have no impact on transmission.
It would impair transmission.
It would completely block transmission.
Flag question: Question 14Question 142 pts
As a treatment for Parkinson’s disease, dopamine synthesis can be increased through the oral administration of:
Group of answer choices
norepinephrine.
L-dopa.
tryptophan.
epinephrine.
Flag question: Question 15Question 152 pts
A key event in the discovery of synaptic transmission was that the drug _______ blocked muscle contraction.
Group of answer choices
SARIN
physostigmine
curare
acetylcholine
