Multiple Choice
Which of the following is the MOST important factor in generating resting membrane potential?
11. Nervous Tissue and Nervous System
Resting Membrane Potential
Back11. Nervous Tissue and Nervous System
Resting Membrane Potential
- Multiple ChoiceWhich type of ion channel opens when a chemical binds to it?
- Multiple ChoiceThe movement of which ion out of the cell through leakage channels establishes the negative membrane potential?
- Multiple ChoiceWhich of the following membrane ion channels open and close in response to changes in the membrane potential?
- Multiple ChoiceWhich of the following membrane ion channels in the neuron are always open?
- Multiple ChoiceThe sodium-potassium ion pump will __________.
- Multiple ChoiceRelative to extracellular fluid, the interior of a neuron has a negative charge because __________.
- Multiple ChoiceIn a neuron, a membrane potential of –90 mV is considered __________.
- Multiple ChoiceWhich of the following statements best describes the resting membrane state in the neuron?
- Open Question
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
a. The resting membrane potential refers to the voltage difference across the membranes of excitable cells at rest.
- Open Question
A hypothetical poison blocks K+ leak channels. How would this affect the resting membrane potential of skeletal muscle fibers? Explain your reasoning.
- Open Question
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
a. The resting membrane potential refers to the voltage difference across the membranes of excitable cells at rest.
- Open Question
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
b. The concentration of Na+ is highest in the cytosol, and the concentration of K+ is highest in the extracellular fluid.
- Open Question
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
c. The Na+/K+ pumps and gated channels maintain the Na+ and K+ gradients necessary for action potentials to occur.
- Open Question
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
d. A depolarization is a change in membrane potential that makes the potential less negative.