Art-labeling Activity Figure 11.7 Label the signaling events at an autonomic syn

Question

Art-labeling Activity Figure 11.7 Label the signaling events at an autonomic synapse. Part A Drag the labels onto the diagram of neurochemical communication at an autonomic synapse. Calcium entry triggers exocytosis of stored NE. b) Norepinephrine (NE) release and removal at a sympathetic neuroeffector junction. Axon varicosity NE is either metabolized by MAO or repackaged into a vesicle for reuse. channels open. Axon part, by diffusion of NE away from synapse. Action potential arrives a vancosity NE binds to adrenergic receptor on target cel Blood vessel Target cell Signaling is terminated part. by active transport f NE back into varicosity Reset Help Submit My Answers Give Up

Explanation / Answer

From left to right, top to bottom:

1. Action potential arrives at varicosity.

2. Voltage gated calcium channels open.

3. Calcium entry triggers exocytosis of stored NE.

4. NE is either metabolized by MAO or repackaged into a vesicle for reuse.

5. Signalling is terminated, in part, by active transport of NE back into varicosity.

6. NE binds to adrenergic receptor on target cell.

7. Signalling is terminated, in part, by diffusion of NE away from synapse.

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