Action Potentials in the Heart Move from One Contractile Cell

question 28

Multiple Choice

Action potentials in the heart move from one contractile cell to the next via

• A) chemical synapses using acetylcholine.
• B) chemical synapses using norepinephrine.
• C) electrical synapses using gap junctions.
• D) myelinated motor neurons.
• E) non-myelinated motor neurons.

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Definitions:

Mode

The value that appears most frequently in a data set.

Mean

The average of a set of numbers, calculated by summing the numbers and then dividing by the count of those numbers.

Median

The middle value in a data set when the values are arranged in ascending or descending order, effectively splitting the dataset into two halves.

Range

The difference between the highest and lowest values in a data set, showing the spread or dispersion of the data points.