The AV Node Controls the Basic Rhythm of the Heart

question 13

True/False

The AV node controls the basic rhythm of the heart, so it is called the pacemaker, but the SA node can modify heart rate when necessary.

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Definitions:

B Cells

A type of white blood cell that plays a vital role in the immune system by producing antibodies to combat pathogens.

APCs

Antigen-presenting cells, a type of immune cell that displays foreign antigens to T-cells, initiating an immune response.

Memory Cells

B or T cells (lymphocytes) that permit rapid mobilization of the immune response on second or subsequent exposure to a particular antigen. See memory B cells and memory T cells.

Dendritic Cells

Immune cells that process antigen material and present it on their surface to other cells of the immune system, playing a critical role in triggering adaptive immunity.