Question

What is the function of pericardial fluid? Where is it found?

Answer 1

The heart is the main organ of the human cardiovascular system. An adult human heart is normally slightly larger than a clenched fist. It is cone-shaped in structure. It is found in the thoracic cavity of the chest behind the breastbone. The heart is covered in a sac like structure known as the pericardial sac.

Complete answer:
The heart is enclosed by a membranous sac which is called the pericardium. It is also referred to as the pericardial sac. There are two layers that construct the pericardium and they are an outer fibrous layer, and the inner serous layer. It mainly protects and lubricates our heart and keeps it in place within the chest. This pericardium also controls our heart from over stretching and overfilling with blood. The strong outer portion of the sac which is also known as the fibrous pericardium is firmly attached to the diaphragm below. This layer is made of thick connective tissue. And the inner layer is known as the serous pericardium. Further, it is classified into two more layers which are the visceral and parietal layers. The serous pericardium is mainly responsible for lubricating the heart.
There is a cavity found between the two layers of the pericardium which is called pericardial cavity. This cavity is completely filled with one type of serous fluid that is known as pericardial fluid. The pericardial fluid is found in the pericardial cavity which is present between two layers of the serous pericardium. Pericardial fluid is a type of serous fluid that releases from the serous layer of the heart which is known as the pericardium. This fluid has a similarity to the cerebrospinal fluid of the brain. It performs various types of important biological processes.
The pericardial fluid executes some very important function of the heart. It mainly acts as a friction reducer that is this fluid decreases the friction between the pericardial membranes of the heart. Another function performed by the pericardial fluid helps the membranes to slip over each other during each heartbeat. It also acts as a shock absorber and protects our heart from the injuries.

Note: The heart, a cardiovascular organ of the human body, is surrounded by a thin sac which is called the pericardium. It consists of a two-layer sac, and between these two layers there is a cavity called the pericardial cavity. This cavity secrets the pericardial fluid. This fluid mainly acts to reduce the friction of the epicardial membrane and to slip over each other. It also protects our heart from internal and external shock and injuries.