Exam (elaborations)
nightingale college physiology week7 activity
nightingale college physiology week7 activity
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nightingale college physiology week7activity
A term commonly used as a synonym for action potential is - ANS-nerve impulse.
Whether an impulse is continued through the neuron depends on the magnitude of the
voltage in the axon hillock. - ANS-true
When a neuron is resting, the inner surface of its plasma membrane is slightly positive
compared with its outer surface. - ANS-false
Which membrane receptor acts to directly change ion permeability when stimulated? -
ANS-Gated-channel receptor
There are two types of synapses—the electrical synapse and the __________ synapse.
- ANS-chemical
The membrane potential maintained by a nonconducting neuron's plasma membrane is
called the _____ membrane potential. - ANS-resting
Movement of the membrane potential away from zero (below the usual RMP) is called -
ANS-hyperpolarization
Neurons are the only living cells that maintain a difference in the concentration of ions
across their membranes. - ANS-false
The active transport mechanism in the plasma membrane that transports sodium and
potassium ions in opposite directions and at different rates is the -
ANS-sodium-potassium pump.
In depolarization the membrane potential moves toward zero, whereas in
hyperpolarization the membrane potential moves away from zero. - ANS-true
The difference in electrical charge between the inside and outside of a membrane is
called the membrane potential. - ANS-true
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