What is the normal color of the blood vessels under the tongue?

There are many kinds of chronic diseases in the human body, and patients are completely unaware of many diseases when they first appear, so it is easy to miss the best time for treatment. In fact, many chronic diseases will manifest themselves in some ways. For example, a person's tongue coating will often become abnormal due to chronic diseases, especially the blood vessels under the tongue will also change. So under normal circumstances, what color are the blood vessels under the human tongue?

Normal color of blood vessels under the tongue:

The physiological function of the sublingual venous plexus is mainly to collect blood from the tongue, return it to higher-level veins, and finally return it to the heart. In addition, the sublingual venous plexus is also one of the important routes of medication. Because the sublingual mucosa is thin and rich in blood vessels, some water-soluble drugs can quickly enter the blood circulation and take effect when taken sublingually. For example, when a heart attack occurs, sublingual nitroglycerin, quick-acting heart-saving pills and other emergency medicines are most effective.

Many people know that nitroglycerin tablets cannot be swallowed but must be held under the tongue. This is because swallowed nitroglycerin must pass through the liver during the absorption process, where most of the nitroglycerin is inactivated, greatly reducing its efficacy. There is a sublingual venous plexus under the tongue, and nitroglycerin dissolves very easily. When it is held under the tongue, the dissolved medicine can directly enter the blood, so it not only takes effect quickly but also does not reduce its efficacy. Nitroglycerin tastes slightly sweet and irritating, so qualified nitroglycerin should not only dissolve quickly, but also have a burning sensation when held under the tongue, which is also one of the signs that the drug is effective.

Many people also know: Place the sublingual thermometer near the root of the tongue (sublingual artery and sublingual venous plexus), keep the probe in good contact with the tissue, close your mouth, and breathe evenly through your nose. This can effectively prevent the in and out air from affecting the measurement results. In addition, the temperature indicated by the sublingual artery and sublingual venous plexus is closest to the human body's body temperature at that time.

Traditional Chinese medicine also uses the morphology of the sublingual venous plexus as one of the references for diagnosis. For example, the sublingual vein is an obvious manifestation of blood stasis. If it is blue or purple in color, it is mostly due to cold pathogens, while if it is reddish in color, it is due to heat. Some doctors also use the method of pricking the sublingual vein for bloodletting to activate blood circulation and remove blood stasis, and to treat symptoms such as tongue stiffness and difficulty speaking after a stroke, with certain therapeutic effects.

It is not normal for the blood vessels under the tongue to turn black, as it may be related to blood stasis in the body.

Suggestions: It is recommended not to eat raw, cold, greasy food, drink plenty of water, keep warm, exercise appropriately, and take Chinese medicine orally for conditioning.