Potassium channels close slowly, thus allowing too much potassium out of the cell

Sodium channels close slowly, thus allowing too much sodium into the cell

Sodium channels close quickly, not allowing enough sodium into the cell

Potassium channels close quickly, not allowing enough potassium out of the cell

Hyperpolarization only occurs in cells that are not able to be depolarized

II only

III only

I and III

II and III

Antiporter because it transports sodium and potassium ions in the opposite direction

Symporter because it transports sodium and potassium ions in the same direction

Symporter because it transports sodium and potassium ions in the opposite direction

Antiporter because it transports sodium and potassium ions in the same direction

the neuron reaches the threshold potential

the muscle reaches the threshold potential

the neuron is depolarized to -60mV

a stimulus occurs

the muscle contracts

Sodium

Potassium

Chloride

Calcium

None of these

Potassium leak channels move potassium ions outside the cell, whereas the sodium-potassium pump moves potassium ions inside the cell

Sodium leak channels and the sodium-potassium pump move sodium ions outside the cell

Potassium leak channels and the sodium-potassium pump move potassium ions outside the cell

Sodium leak channels move sodium ions outside the cell, whereas the sodium-potassium pump moves sodium ions inside the cell

Hyponatremia will make it harder to contract muscles

Hyponatremia will make it easier to contract muscles

Hyponatremia will not affect the difficulty in being able to contract muscles

Hyponatremia will make the muscle easier to contract at first then more difficult over time

None of these

The researcher is unable to generate an action potential in the neuron

Trial 3

Trial 4

Trial 5

Refractory period

Action potential

Resting potential

Threshold

Increased firing rate of an individual neuron to generate an action potential

Over time neurons will produce action potentials with no stimulus

Activating several unique motor units to generate an action potential

Adding together the total amount of action potentials produced over a length of time