Prashant Dahal 
Our cardiovascular system comprises the heart and a closed circuit of blood vessels for the closed continuous blood circulation throughout the body. This closed, interconnected network of blood vessels defines … Read more
The cardiac cycle is a continuous closed sequence of events that results in the continuous and systematic contraction and relaxation of the chambers of the heart. It includes all the … Read more
The regular contraction and relaxation of the chambers of the heart in a rhythmic cycle are called heartbeat. The cardiac action potential generated by the SA node and conducted by … Read more
The heart is internally divided into several compartments, well separated by septum and valves, called the chambers of the heart. The human heart has four chambers, two auricles, and two … Read more
The pericardium is a double-layered sac that surrounds the heart externally. It is a double-walled sac-like structure; hence, it is also called the pericardial sac. Pericardium Structure Histologically, the pericardium … Read more
There are three layers of the heart. They are: 1. Epicardium (Outermost Layer of Heart) Epicardium Structure Functions of Epicardium Epicardium-associated Diseases 2. Myocardium (Middle Layer of Heart) Myocardium Structure … Read more
Heart valves are the specialized flap or cusp-like structures inside the heart composed primarily of dense connective tissues that maintain the one-way flow of the blood inside the heart i.e., … Read more
Capillaries are incredibly small and finer blood vessels connecting the arterioles with the venules. They are the smallest blood vessels in our body. Though it seems to be the branch … Read more
Veins are the blood vessels that collect the deoxygenated blood from the various tissues and organs of the body and transport it back to the heart. The blood vessels that … Read more
The lymphatic system is an organ system in vertebrates that helps collect (excess interstitial fluid) lymph from tissues and the transportation of the fluid back to the bloodstream for re-circulation. … Read more
