When neuroscientists use the analogy of lock and key they try to provide a visual explanation for which function of neurons? degradation/breaking down of neurotransmitters by enzymes activation of the nerve impulse on the pre-synaptic cell reuptake of neurotransmitters by a pre-synaptic cell the action of neurotransmitters on the receptors of the postsynaptic cell
Q1 When neuroscientists use the analogy of lock and key they try to provide a visual explanation for which function of neurons?
degradation/breaking down of neurotransmitters by enzymes
activation of the nerve impulse on the pre-synaptic cell
reuptake of neurotransmitters by a pre-synaptic cell
the action of neurotransmitters on the receptors of the postsynaptic cell
Q2 Your sibling was prescribed Zoloft and was told by the doctor that this drug inhibits the reuptake of serotonin. You then realize that Zoloft acts as a(n) ____for serotonin.
antagonist
modulator
agonist
mimic
Q3 You read about a new drug that would block the action of AChE (the enzyme that breaks down ACh). You then realize it will serve as a(n) _____for ACh.
antagonist
modulator
agonist
mimic
Q4 Using directional terms you can say that your right arm is _____ to your left arm
proximal
distal
ipsilateral
contralateral
Q5 What is the most correct description of the propagation of action potentials?
The action potential is reproduced again and again down the length of the axon
One action potential is formed at the axon hillock, and then that same signal travels down the length of the axon.
When the axon hillock reaches threshold, all of the action potentials are simultaneously formed down the length of the axon
One action potential is formed at the axon hillock, then it triggers the movement of chemical messengers that travel the length of the axon.
Q6 If you had to explain the difference between myelinated axons and unmyelinated axons, you would be right to say that myelinated axons_______?
use more energy to transmit a neural message.
have wider nodes of Ranvier.
have narrower nodes of Ranvier.
use less energy to transmit a neural message
Q7 An experimentor performed ablation in the most rostral lobes of the cerebral cortex of a rat. Which lobes are going to get affected as a result?
frontal
parietal
temporal
occipital
Q8 When action potential is generated, at the very first stages, sodium moves
slowly into the cell, as a result of electrostatic pressure being offset by diffusion.
very rapidly into the cell, because both electrostatic pressure and diffusion happen at the same time
slowly out of the cell, because as a positive ion, sodium is attracted to the relatively negative intracellular environment
very rapidly out of the cell, as a result of the sodium-potassium pumps being very active
Q9 The difference between MRI and MRI is that MRI requires
much stronger magnets than those used in MRI.
injection of some radioactive substances into the participant.
much larger numbers of gamma cameras than in MRI.
multiple images taken in a short period of time
Q10 What is the type of channels that opens after having contact with a specific chemical?
sodium-potassium pumps.
ligand-gated channels.
voltage-dependent channels.
phospholipids pumps.
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