Venule (Venules)

Venule is a small blood vessel that is a continuation of the capillary network. Venules range in size from 8 to 100 micrometers in diameter and consist of a single layer of endothelial cells that form the vessel wall. Venules are often located next to arterioles, which are small arteries.

Typically, the blood in the venules has low pressure and low velocity. However, venules play an important role in blood circulation, as they collect blood from tissues and transport it to large veins, which then transport the blood back to the heart.

Many venules merge with each other to form a vein. At the same time, the blood in the veins has a lower pressure than in the arteries, so in order for the blood to return back to the heart, the venous vessels contain valves that ensure one-way blood flow.

Venules also play an important role in the immune system, as they are the site of migration of leukocytes (white blood cells), which are involved in protecting the body from infections and other pathological processes.

In general, venules are important circulatory elements that collect blood from tissues and carry it back to the heart. In addition, they play an important role in protecting the body from infections and other pathological processes.

A venule is a small blood vessel that plays an important role in transporting blood from capillaries to veins. They have a diameter of less than 0.1 mm and are an extension of the network of capillaries, which are the thinnest and most numerous blood vessels in the body.

Like capillaries, venules consist of a single layer of endothelial cells, which ensures their permeability. They also have small thickets of smooth muscle that regulate their diameter and blood flow.

Many venules connect with each other to form veins. These veins in turn connect to each other, forming larger and larger vessels until they reach the large veins that return blood to the heart.

Venules are found in all organs and tissues of the body, their number depends on the metabolic needs of the tissue. For example, in skeletal muscle and liver, venules have a larger diameter than in other tissues to ensure efficient blood flow and oxygen delivery.

Venules also play an important role in the body's immune system. They are the site where white blood cells can leave the bloodstream and enter tissues to fight infections and other disease processes.

Even though venules are small blood vessels, they play an important role in ensuring healthy blood circulation and the functioning of the body's organs and tissues. Their structure and function are closely related to other blood vessels such as capillaries and veins, and understanding their operation is important to understanding the body's circulatory system as a whole.

Greetings to all readers! Today I will tell you about a very important element of our body - venols or venules.

Let's start with a little definition of what they are. Small blood vessels that are a continuation of the capillary network. They play a huge role in blood circulation: they maintain its volume