EEOB 2520 Exam 4 2025(Questions and answers) LATEST UPDATE
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Course
EEOB 2520
Institution
EEOB 2520
The current measurement of a typical cell's membrane potential is -60 mV. That cell
should therefore be correctly categories as ___ and the likelihood of an action potential
occurring is ___. - ️️Depolarized - not able to be determined.
Cell B's cytosol is observed to be more negatively char...
EEOB 2520 Exam 4
The current measurement of a typical cell's membrane potential is -60 mV. That cell
should therefore be correctly categories as ___ and the likelihood of an action potential
occurring is ___. - ✔️✔️Depolarized - not able to be determined.
Cell B's cytosol is observed to be more negatively charged than the surrounding
interstitial fluid. A mechanically-gated sodium channel is open in Cell B. Assuming a
typical sodium distribution, sodium would have a net movement ___ Cell B. - ✔️✔️Into
Juno, the bug-eyed Boston Terrier, and her bestie Capone and Oliver regularly try to
limit negative actions of any other dogs in their fenced-in dog park. Juno and her bestie
The graded potentials starting each myelinated section of axon ( i.e, end of each node)
are ___ in size. The first action potentials at the start of each node (i.e, just after a
myelinated section) are ___ in size. - ✔️✔️Identical - identical
Scenario 1: one person standing on each goal line in the empty Shoe try to talk to each
other but neither can hear the other person. Scenario 2: nine people are added. One on
each 10-yard increment of the field. Now the goal-line people can hear each other as
their words are relayed through the people between. Correctly applying the terminology
of potentials, Scenario 1 would be like a(n) ___ potential Scenario 2 would be like a(n)
___ potential. - ✔️✔️Graded - action
During anatomy lab, you dissect a group of axons in the cadaver's right wrist. You
correctly tell your lab partner that you are observing ___ cells and parts of ___ neurons.
- ✔️✔️Schwann - afferent or efferent
A correct series of events during an action potential is - ✔️✔️Depolarization, threshold,
repolarization
Sodium influx, potassium outflux
During an action potential, which type of channels are open at the peak (i.e., highest
amplitude) of the Vm? - ✔️✔️The voltage-gated sodium channels
The voltage-gated potassium channels.
Astrocytes are physically ___ than neurons and cause ___ neurotransmitters to be
available for the neurons. - ✔️✔️Smaller - less
would correctly be compared to ___ and the dog-park fence to ___. - ✔️✔️Microglia -
ependymals
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