Action potentials pass from one cardiac muscle cell to another through areas of low electrical resistance called

A) gap junctions.
B) fibrous heart rings.
C) electromagnetic discs.
D) sarcolemma sclerotic plaques.
E) tight junctions.

Gap Junctions

Specialized intercellular connections between a multitude of animal cell-types that directly connect the cytoplasms of two cells, allowing various molecules, ions, and electrical impulses to directly pass through a regulated gate between cells.

Cardiac Muscle Cell

Specialized muscle cells found only in the heart, featuring unique properties such as automaticity and the ability to contract as a unit.

Electrical Resistance

A measure of the degree to which an object opposes the passage of an electric current.