الأوعية اللمفاويَّة .. كتاب في سبيل موسوعة علمية .. الدكتور أحمد ذكي

Lymphatic vessels

An educated man knows a lot about blood circulation, he knows about the heart, arteries and veins. The connection between this and that, and the danger of all of this in human life.

But you are talking to him about the lymphatic vessels, which are vessels that almost run side by side in the body with the blood vessels, especially the veins, so the educated man hardly knows anything about them.

Where arteries meet veins in the body:

Let us return to the blood circulation for a moment.
The arteries branch and branch, and yellow and then yellow until they form capillaries. Its walls are thinned so that blood plasma (blood without its balls) and dissolved nutrients can come out of it to the tissues of the body so that they can take the materials they need. The walls of the venous capillaries soon absorb what is left of this liquid plasma, returning it to the veins and into the blood circulation.

But these venous capillaries do not absorb all the fluids that enter the tissues. There is a surplus of these fluids, so the lymphatic vessels absorb it.

It absorbs it through its capillaries that begin in the tissues, and these capillaries gather to form larger and larger vessels, heading upward until finally two main lymphatic vessels are formed, the Right Lymphatic Duct and the Thoracic Lymphatic Duct.
Thoracic Duct.

The right lymphatic duct collects vascular fluids
Lymphatics in the right side of the head, neck, chest, right arm, right lung, right side of the heart, and from the convex surface of the liver. As for the other lymphatic vessels, they end up draining into the thoracic lymphatic duct.
These are the two main lymphatic channels that drain
They contain lymphatic fluid in the blood, the first in the right subclavian vein, and the second in the left subclavian vein, at the neck.

Thus, the blood recovers the excess fluids in the body's tissues that it was unable to retrieve through its venous capillaries. Another special job is carried out by the lymphatic vessels in the intestine, because their capillaries there absorb fatty substances from the digested food. For this reason, their fluid is similar to milk.

- Lymph nodes:

It is spread in the lymphatic vessels. The vessel enters one end of the gland so that its fluid flows into the pockets in the gland, then the fluid collects in a vessel to exit and continue on its way.
In these glands, the blood is purified and purified. The lymphatic fluid coming from the limbs, arms and legs must pass through at least one gland before it makes its way into the blood.

The glands purify the lymphatic fluid from the bacteria and their toxins it contains. They are a good filter and contain many white balls ready to attack the invaders and annihilate them.

The gland often becomes inflamed during this fight. A man visited a doctor complaining of a swelling in his upper inner thigh. The doctor told him that there was a pus wound on your foot. The man took off his sandal and found a wound in it. The man knew it, but he did not realize that there was a connection between him and this tumor (a swollen lymph node). The wound was treated and the tumor went away.

- Lymphatic fluid:

As for the lymphatic fluid, it is a yellow fluid that becomes curdled if we leave it. In this, it is exactly like blood, and in this fluid there are lymphocytes similar to white blood cells.