Reference no: EM133406121
Questions
1. Which of the following neurotransmitters has primarily ionotropic receptors?
Oxytocin
Dopamine
Glutamate
Serotonin
2. The notion that the nervous system communicates using chemical messages was first demonstrated by ______ and his discovery of _________.
Camillo Golgi; epinephrine
Donald Hebb; glutamate
Santiago Ramón y Cajal; dopamine
Otto Loewi; acetylcholine
3. 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?
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.
4. Peptide transmitters are synthesized in the:
dendrites.
presynaptic terminals.
cell body.
axon.
5. What is true about chemical synapses that is not true about electrical synapses?
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.
6. What do endocannibinoids and gaseous transmitters have in common?
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.
7. Receptors on the presynaptic side that are targets for the neurotransmitter the cell itself releases are called:
atypical receptors.
autoreceptors.
self-receptors.
anomolous receptors.
8. Ionotropic receptors:
produce the activation of second messengers.
all answer choices are true.
change in shape when neurotransmitters bind to them.
activate G proteins.
9. _____ contain the neurotransmitters to be released by the neuron.
Axons
Ribosomes
Synaptic vesicles
Dendrites
10. ________ acting on _________ can enhance the activation of neurons by other inputs that may normally be sub-threshold.
Glutamate; ionotropic receptors
Glutamate; metabotropic receptors
Acetylcholine; nicotine receptors
Acetylcholine; muscarinic receptors
11. Which of the following statements comparing amino acid and peptide neurotransmitters is true?
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.
12. Endocannabinoids are:
are considered as amino acid transmitters.
All of the answers are correct.
synthesized from the lipid membrane of the cell.
are excitatory neurotransmitters.
13. A toxin from the Motown woolly spider causes calcium channels to remain open longer with each action potential. How might this impact synaptic transmission?
It would facilitate transmission.
It would have no impact on transmission.
It would impair transmission.
It would completely block transmission.
14. As a treatment for Parkinson's disease, dopamine synthesis can be increased through the oral administration of:
norepinephrine.
L-dopa.
tryptophan.
epinephrine.
15. A key event in the discovery of synaptic transmission was that the drug _______ blocked muscle contraction.
SARIN
physostigmine
curare
acetylcholine