Clotting occurs when blood platelets adhere to the edges of a breached blood vessel and release chemicals that attract more platelets, resulting in a plug, as MedlinePlus explains. The plug stops external bleeding and al... More »

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According to the National Blood Clot Alliance, symptoms of a blood clot in the arm include swelling, pain, tenderness, reddish or bluish skin discoloration, and being warm to the touch. If these symptoms are present, imm... More »

Large blood clots in the legs can cause symptoms such as leg redness and warmth, leg swelling, and leg pain that worsens when standing up or walking, according to ClotCare. While blood clots located below the knee are un... More »

Hematology is the branch of medicine that studies and treats diseases of the blood, including diseases related to blood platelets, according to the American Society of Hematology. Platelets aid in blood clotting, so many... More »

www.reference.com Science Human Anatomy Blood

According to New Health Guide, thin blood is due to insufficient platelets in the blood. This condition is also called thrombocytopenia, and it can be caused by pregnancy or an infection. More »

The composition of blood consists of various components, such as plasma, white blood cells, red blood cells and platelets. Plasma, which is the fluid component that contains the different blood cells and substances of wh... More »

Blood platelets are cells that aid in the clotting process, according to the American Red Cross. They collect at the lining of the blood vessels in the event of a cut and help stop the flow of blood. More »