Which Labeled Structure in the Figure Represents the Only Potential

question 22

Multiple Choice

Which labeled structure in the figure represents the only potential pathway for conducting action potentials from the atria to the ventricles?

• A)A
• B)B
• C)C
• D)D

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Definitions:

Pyrrolidine

A cyclic secondary amine, presenting as a clear liquid with an unpleasant smell, used as a building block in the synthesis of pharmaceuticals and alkaloids.

Ethylamine

A colorless gas with a fishy smell, used in chemical synthesis, represented by the chemical formula C2H5NH2.

Hybridized

Refers to the concept in chemistry where atomic orbitals mix to form new hybrid orbitals, which can explain the geometry of molecular bonding.

CNC Bond

A bond formation involving a carbon-nitrogen-carbon sequence, significant in the structure of various organic molecules.