From Wikipedia, the free encyclopedia. Interstitial fluid or tissue fluid is a solution that bathes and surrounds the tissue cells of multicellular animals. It is the main component of the extracellular fluid, which also includes plasma and transcellular fluid.The interstitial fluid is found in the interstices-the spaces between cells (also known as the tissue spaces).t is the main component of the extracellular fluid, which also includes plasma and transcellular fluid. The interstitial fluid is found in the interstices-the spaces between cells (also known as the tissue spaces).
Cardiac Preload. Preload can be defined as the initial stretching of the cardiac myocytes prior to contraction. Preload, therefore, is related to muscule sarcomere length.ardiac Preload. Preload can be defined as the initial stretching of the cardiac myocytes prior to contraction. Preload, therefore, is related to muscule sarcomere length.
During a single cardiac cycle, the atria and ventricles do not beat simultaneously; the atrial contraction occurs prior to ventricular contraction. This timing delay allows for proper filling of all four chambers of the heart. Recall that the left and right heart pumps function in parallel.uring a single cardiac cycle, the atria and ventricles do not beat simultaneously; the atrial contraction occurs prior to ventricular contraction. This timing delay allows for proper filling of all four chambers of the heart. Recall that the left and right heart pumps function in parallel.