On a Normal ECG, a Wave for Repolarization of the Atria

question 206

Multiple Choice

On a normal ECG, a wave for repolarization of the atria is not recorded.Why?

• A)The leads are not placed in a position to pick it up.
• B)No repolarization of the atria occurs normally.
• C)It occurs simultaneously with ventricular depolarization and is masked by the QRS complex.
• D)It does not travel through body fluids.
• E)It is too small to be picked up by external recording electrodes.

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Definitions:

Fibrous Connective Tissue

A type of connective tissue rich in collagen fibers that provides support and strength to other tissues and organs.

Adhesive Molecule

Molecules that participate in binding or sticking cells together, playing critical roles in cell signaling and structural integrity.

Ground Substance

An amorphous gel-like substance surrounding the cells within the extracellular matrix of connective tissues, providing support and mediating communication between cells.

Stem Cell

Stem Cells are undifferentiated cells with the potential to develop into different cell types, used in medical research for their regenerative properties.