What are the Key Histological Structures Involved?
The heart is composed of several key tissues and cells that play a role in its function:
Cardiac Muscle: This is the primary tissue responsible for contraction and is unique in its striated appearance and intercalated discs. Intercalated Discs: Specialized connections between cardiac muscle cells that facilitate synchronized contraction. Endothelium: The inner lining of blood vessels, including the heart chambers, which plays a role in regulating blood flow. Myocardium: The thick, muscular layer of the heart wall that drives the pumping action. Sinoatrial Node: A group of cells located in the right atrium that act as the natural pacemaker of the heart.
