Inferior vena cava. The inferior vena cava (or IVC) (Latin: vena, vein, cavus, hollow) is a large vein that carries deoxygenated blood from the lower and middle body into the right atrium of the heart. Its walls are rigid and has valves so the blood does not flow down via gravity.
Tight Junctions The tight junction (also referred to as a zonula occludens) is a site where the membranes of two cells come very close together. In fact, the outer leaflets of the membranes of the contacting cells appear to be fused. Tight junctions, as their name implies, act as a barrier so that materials cannot pass between two interacting cells.
Basically, the intercalated disc consists of three types of membrane junctions-these include Fascia Adherens, Macual Adherens, Gap Junctions. These three membrane junctions have their own functions and in fact help in the effective working of the intercalated disc.he heart of the human beings is made up of cardiac muscles which are different from smooth and skeletal muscles. Inside the cardiac muscles is the intercalated discs which is known to join various adjacent cells together.