Which is true of an action potential?

The outside of the plasma membrane is negatively charged, and the inside is positively charged.

The mechanisms that produce and maintain the resting membrane potential do so by producing a

slight excess of positive ions on the outer surface of the plasma membrane.

Most body movements are _____ contractions.

a combination of isotonic and isometric

Which is true of an action potential?

The outside of the plasma membrane is negatively charged, and the inside is positively charged.

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Spencer

PHysio weeks 1-7

Question	Answer
Which is true of an action potential?	The outside of the plasma membrane is negatively charged, and the inside is positively charged.
The mechanisms that produce and maintain the resting membrane potential do so by producing a	slight excess of positive ions on the outer surface of the plasma membrane.
Which membrane receptor acts to directly change ion permeability when stimulated?	Ionotropic receptor
The magnitude of the action potential peaks when the sodium channels close.	False
In a myelinated neuron, the impulse can travel under the myelin between nodes of Ranvier.	True
Most body movements are _____ contractions.	a combination of isotonic and isometric
The four kinds of protein that make up myofilaments are myosin, actin,	troponin, and myofibril.
Which is true of an action potential?	The outside of the plasma membrane is negatively charged, and the inside is positively charged.
Which of these is not a lipid?	steroid
A triglyceride is composed of a glycerol molecule and three of the same type of fatty acid.	False

Created by: sdeigert

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