Heart Rate Is Slowest If the Pacemaker Activity Signal Originates

question 103

Multiple Choice

Heart rate is slowest if the pacemaker activity signal originates in the

• A) SA node.
• B) AV node.
• C) normal pacemaker of the heart.
• D) ventricular conducting cells.

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Definitions:

Flooded

Describes areas that have been overwhelmed with water, often due to excessive rainfall, river overflow, or dam failure.

Terrace

A relatively level or gently inclined surface or bench bounded on one edge by a steeper descending slope.

Entrenched Meanders

Deeply incised meanders in a river or stream that retain their winding course because the land elevation change has been rapid compared to the lateral motion of the river.

Base Level

The lowest point to which a river or stream can erode its channel, often sea level for rivers.