👉 Inside the heart, particularly within the chambers and the walls of the heart itself, there exists a fluid known as cardiac or myocardial fluid. This fluid serves multiple crucial functions: it lubricates the heart's internal structures, allowing them to move smoothly against each other during the continuous cycle of contraction and relaxation. It also helps in reducing friction between the heart's valves, ensuring they open and close efficiently without sticking. Additionally, cardiac fluid acts as a cushion, protecting the heart muscle from damage due to the high pressure and rapid contractions it experiences. This fluid is primarily composed of water, salts, and proteins, and its presence is vital for maintaining the heart's optimal function and overall cardiovascular health.
