What do platelets do and what are platelets

It has the effect of hemostasis and coagulation. If you have fewer platelets. It's hard to stop the bleeding.

The slightest movement will bleed. If there are too many platelets. It is easy to thicken the blood.

A blood clot is formed. This is all basic medical knowledge. should be mastered.

Platelets play a role in hemostasis and coagulation, and have the functions of forming thrombosis, blocking wounds, releasing and coagulation.

Platelets have a clotting function and can reduce blood outflow when pressed by hand during injury.

It is used to clot blood from wounds, stopping bleeding.

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Platelets are small pieces of cytoplasm that are detached from the cytoplasm of mature megakaryocytes in the bone marrow. Although megakaryocytes are the least abundant in the hematopoietic cells of the bone marrow, accounting for only the total number of nucleated cells in the bone marrow, the platelets they produce are extremely important for the body's hemostatic function. When blood is lost due to vascular trauma, the functional activity of platelets in the process of physiological hemostasis can be roughly divided into two stages:

In the first stage, platelets quickly adhere to the wound site and aggregate into a clump to form a fluffy thrombostatic embolus. The second segment is mainly to promote blood clotting and form a solid hemostatic embolus.

Categories: Medical & Health >> Common sense of the human body.

Analysis: Platelets are the smallest blood cells in the body. It survives for 14 days in circulating blood.

Platelets are indeed small. Platelets are 2 4 m (microns) in diameter, thick, and oblate bodies with refraction. It is disc-shaped during normal cultivation, and sometimes pseudopodia can be extended.

On Wright-stained blood smears, platelets are often grouped in groups of three or five, uneven in size, round, oval, or irregularly shaped, seedless, pale blue cytoplasm, and contain purplish-red granules. Some people divide it into four types: large, medium, small and deformed, with medium accounting for 40% and 50%.

Platelets develop from the cytoplasm of lead cells, the largest blood cells in the bone marrow mature meganucleus.

The function of platelets is mainly to promote hemostasis and accelerate blood clotting, and platelets also have the function of maintaining the integrity of the capillary wall.

In the process of hemostasis and coagulation, platelets have the functions of forming blood clots, blocking wounds, and releasing various factors related to coagulation.

Abnormal platelet quantity and quality can cause bleeding disorders. Decreased numbers are seen in thrombocytopenic purpura, hypersplenism, aplastic anemia, and leukemia. Increased numbers are seen in conditions such as essential thrombocythemia and polycythemia vera.

Mass abnormalities may be seen in platelet weakness.

Platelets are not actually "plates", they do not have a complete cell structure, no nucleus, they are small pieces of cytoplasm shed from megakaryocytes in the bone marrow, with an intact cell membrane on the surface, and are the smallest cells in the blood. Platelets are shaped like an olive or disc under an electron microscope, and they are also fusiform or irregularly shaped. Platelets are long and wide.

The platelet content in the blood of a normal person is (100 300) and platelets at 10° are usually stored in the spleen.

The role of platelets is to stop bleeding and participate in the coagulation process in the body, and antiplatelet drugs are to prevent cardiovascular events and are the cornerstone of coronary heart disease.