-3313-002-... The sodium-potassium pump transports 3 sodium ions out of th QUEST

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-3313-002-... The sodium-potassium pump transports 3 sodium ions out of th QUESTION 5 The following is an "all or none phenonmenon: O Excitatory post synaptic potential 0 Action potential O Graded potential O Inhibitory post synaptic potential QUESTION 6 An inhibitory post synaptic potential (IPSP) will cause: An action potential to be propagated An action potential Hyperpolarization Depolarization QUESTION7 The positive "voltage spike of an action potential is caused by: a rush of acetylcholine into the neuron a rush of sodium into the neuron a rush of potassium into the neuron a rush of calcium into the neuron Click Save and Submit to save and submit. Click Save All Answers to save all answers MacBook Air

Explanation / Answer

Ans-5

As we know heart muscle is excitable tissue so, it responds to external stimuli by contracting. If the external stimulus is too weak, no response is obtained; if the stimulus is adequate, the heart responds to the best of its ability.

That is why second option, action potential is correct

Ans-6

Option III is correct, hyperpolarization that is inhibitory effect.

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