CHAMBERS?
Left ventricle
The muscle walls of the heart are called the myocardium. This thick, muscular layer is responsible for the heart's contraction and pumping action. It is located between the inner layer, the endocardium, and the outer layer, the epicardium, which together form the heart's structure. The myocardium varies in thickness depending on the heart chamber, being most prominent in the ventricles.
The force exerted against the arterial walls when the heart contracts is called blood pressure. It is typically represented by two numbers: systolic pressure (when the heart is contracting) and diastolic pressure (when the heart is relaxed). This pressure is essential for moving blood throughout the body.
Hyphae that lack a cross wall are called CoenocyticWhereas those that contain a cross wall are called Septate
When the heart contracts, blood is forced out of the organ at high speed and pressure. With every beat of the heart, another surge of blood pushes against the walls of the artery; this is called a pulse. You can feel a pulse at the wrists and neck.
The muscle that separates the right and left side of the heart is called the interventricular septum and is just a continuation of the cardiac (Heart) muscle of the heart's walls.
elastic tissue
The human heart has 4 sides.
The tiny white cords that anchor the cusps or flaps of endocardium to the walls of the ventricles are called chordae tendineae. These cord-like structures help prevent the cusps of the heart valves from prolapsing into the atria when the heart contracts.
The heart is composed of cardiac muscle.
the surgical removal of fatty deposits, called plaque, from the walls of arteries other than those of the heart and brain.
The atrial walls inside the heart are made of endothelium and are called endocardium. They are made of the same tissue as the insides of veins and arteries.