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  1. What Are Platelets? Function & Anatomy - Cleveland Clinic

    Aug 26, 2024 · Platelets, also called thrombocytes, are tiny cell fragments in your blood that help with clotting. Platelets are your body’s natural bandage to stop bleeding if you’re injured.

  2. Platelet count blood test: Normal, low, and high values

    Apr 25, 2025 · Platelets, also called thrombocytes, are fragments of larger cells made in the bone marrow called megakaryocytes. These fragments are crucial to wound healing.

  3. Platelet - Wikipedia

    One major function of platelets is to contribute to hemostasis: the process of stopping bleeding at the site where the lining of vessels (endothelium) has been interrupted. Platelets gather at the …

  4. What Are Platelets and Why Are They Important? - Johns …

    Platelets are the cells that circulate within our blood and bind together when they recognize damaged blood vessels.

  5. Thrombocytopenia (low platelet count) - Symptoms and causes

    May 13, 2025 · Thrombocytopenia can be mild and cause no symptoms. If platelets become too low, there is a risk of serious bleeding after an injury or during surgery. Rarely, dangerous …

  6. Platelet Count: Blood Test and Ranges to Monitor

    Sep 5, 2025 · Platelets are a key component of blood-clotting, which helps prevent excessive bleeding. These small blood cells are formed in the bone marrow and stored in the spleen. 1 …

  7. What Are Platelets? - University of Rochester Medical Center

    Platelets are tiny blood cells that help your body form clots to stop bleeding. If one of your blood vessels gets damaged, it sends out signals to the platelets.

  8. Blood - Platelets, Thrombocytes, Clotting | Britannica

    Dec 15, 2025 · The blood platelets are the smallest cells of the blood, averaging about 2 to 4 μm in diameter. Although much more numerous (150,000 to 400,000 per cubic mm) than the white …

  9. What Are Platelets: Structure, Functions, and Importance

    May 10, 2025 · Platelets are one of the main types of blood cells in your body, along with red blood cells and white blood cells. Also known as thrombocytes, platelets are responsible for …

  10. What Are Platelets In Blood - Red Cross Blood

    Platelets, or thrombocytes, are small, colorless cell fragments in our blood that form clots and stop or prevent bleeding. Platelets are made in our bone marrow, the sponge-like tissue inside our …