Inset (a) shows the action potential in a neuron and inset (b) shows the action potential in a cardiac muscle. Inset (c) shows the action potential in a cardiac muscle (same as inset (b)) along with the corresponding flow of ions. Choose the correct answer(s).
P.S: This is a multi-select question, but each incorrect answer has a negative marking of 0.25 marks.

Question

Inset (a) shows the action potential in a neuron and inset (b) shows the action potential in a cardiac muscle. Inset (c) shows the action potential in a cardiac muscle (same as inset (b)) along with the corresponding flow of ions. Choose the correct answer(s). 
 P.S: This is a multi-select question, but each incorrect answer has a negative marking of 0.25 marks.

Answer

Cardiac action potentials have a plateau phase, while neuronal action potentials do not.

Answer

The resting potential of the cardiac muscle has a higher magnitude than the resting potential of the neuron

Answer

The action potential of a neuron is considerably shorter in duration than the action potential of the cardiac muscle

Answer

Sodium ions play no role in the depolarization of the action potential shown in inset (b).

Answer

The refractory period in the action potential shown in inset (a) is due to the efflux of potassium ions and an influx of calcium ions.

Crowdly

Inset (a) shows the action potential in a neuron and inset (b) shows the action...

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