BIO 370 LAB FINAL STUDY GUIDE
QUESTIONS & CORRECT ANSWERS
PASSED
Evoked Action Potentials in Earthworm
What is the preferred natural direction of nerve conduction in the lateral fiber(s)?
No answer text provided.
Head to Tail
Tail to Head
No answer text provided. - correct answer ✔✔ Tail to Head
Evoked Action Potentials in Earthworm
In this experiment we will be using intracellular recordings to measure the evoked action
potentials in the earthworms.
True
False - correct answer ✔✔ False
Evoked Action Potentials in Earthworm
In nerve fibers, what is the term that characterizes the preferred natural direction of
conduction?
Asymmetric
Antidromic
,Orthodromic
Bilateral - correct answer ✔✔ Orthodromic
Evoked Action Potentials in Earthworm
Due to the experimental setup, how will the recording appear after an action potential has
occurred?
Monophasic
Triphasic
Biphasic
Tetraphasic - correct answer ✔✔ Biphasic
Evoked Action Potentials in Earthworm
In the earthworm, the median and lateral fiber(s) conduct their naturally generated impulses in
what direction(s)?
Opposite Direction(s)
Same Direction(s) - correct answer ✔✔ Opposite Direction(s)
Evoked Action Potentials in Earthworm
Which giant fiber(s) have a faster conduction velocity?
Medial Fiber(s)
Lateral Fiber(s) - correct answer ✔✔ Medial Fiber(s)
Evoked Action Potentials in Earthworm
Which giant fiber(s) have a higher stimulus threshold?
, Lateral Fiber(s)
Medial Fiber(s) - correct answer ✔✔ Lateral Fiber(s)
Evoked Action Potentials in Earthworm
What is the name of the period where the neuron is completely incapable of producing an
action potential despite a larger than normal stimulus?
Depolarization
Hyperpolarization
Relative Refractory
Absolute Refractory - correct answer ✔✔ Absolute Refractory
Evoked Action Potentials in Earthworm
Is there a relationship between the stimulus strength and the response amplitude in a single
axon?
Yes
No - correct answer ✔✔ No
Evoked Action Potentials in Earthworm
Which structure connects the individual cells that compose the giant fibers and allow for
electrical conduction down the fibers?
Gap Junctions
Desmosomes
Cadherins
QUESTIONS & CORRECT ANSWERS
PASSED
Evoked Action Potentials in Earthworm
What is the preferred natural direction of nerve conduction in the lateral fiber(s)?
No answer text provided.
Head to Tail
Tail to Head
No answer text provided. - correct answer ✔✔ Tail to Head
Evoked Action Potentials in Earthworm
In this experiment we will be using intracellular recordings to measure the evoked action
potentials in the earthworms.
True
False - correct answer ✔✔ False
Evoked Action Potentials in Earthworm
In nerve fibers, what is the term that characterizes the preferred natural direction of
conduction?
Asymmetric
Antidromic
,Orthodromic
Bilateral - correct answer ✔✔ Orthodromic
Evoked Action Potentials in Earthworm
Due to the experimental setup, how will the recording appear after an action potential has
occurred?
Monophasic
Triphasic
Biphasic
Tetraphasic - correct answer ✔✔ Biphasic
Evoked Action Potentials in Earthworm
In the earthworm, the median and lateral fiber(s) conduct their naturally generated impulses in
what direction(s)?
Opposite Direction(s)
Same Direction(s) - correct answer ✔✔ Opposite Direction(s)
Evoked Action Potentials in Earthworm
Which giant fiber(s) have a faster conduction velocity?
Medial Fiber(s)
Lateral Fiber(s) - correct answer ✔✔ Medial Fiber(s)
Evoked Action Potentials in Earthworm
Which giant fiber(s) have a higher stimulus threshold?
, Lateral Fiber(s)
Medial Fiber(s) - correct answer ✔✔ Lateral Fiber(s)
Evoked Action Potentials in Earthworm
What is the name of the period where the neuron is completely incapable of producing an
action potential despite a larger than normal stimulus?
Depolarization
Hyperpolarization
Relative Refractory
Absolute Refractory - correct answer ✔✔ Absolute Refractory
Evoked Action Potentials in Earthworm
Is there a relationship between the stimulus strength and the response amplitude in a single
axon?
Yes
No - correct answer ✔✔ No
Evoked Action Potentials in Earthworm
Which structure connects the individual cells that compose the giant fibers and allow for
electrical conduction down the fibers?
Gap Junctions
Desmosomes
Cadherins
