Examine the Neurotransmitters in the Synapse in the Accompanying Figure

question 17

Multiple Choice

Examine the neurotransmitters in the synapse in the accompanying figure.What might happen to these neurotransmitters after step 4 is complete? The neurotransmitters ________.

• A) are transported back to the sending neuron
• B) are transported into the receiving neuron
• C) remain in the synaptic cleft
• D) trigger an action potential in the sending neuron

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Definitions:

Diastole

The phase of the cardiac cycle during which the heart relaxes and fills with blood after contraction.

Electrocardiogram

A test that measures the electrical activity of the heart to show whether or not it is working normally.

P Wave

First complex of the electrocardiogram representing depolarization of the atria.

Atrial Depolarization

The electrical activation of the atria of the heart, leading to atrial contraction and the initiation of the heartbeat.