What are fragments of cells found in blood that are primarily responsible for clotting?

Platelets, also known as thrombocytes, are the cellular fragments in blood that play a critical role in the process of clotting. They are produced in the bone marrow from larger cells called megakaryocytes. When there is a break in a blood vessel, platelets quickly gather at the injury site, adhere to the exposed tissue, and release chemicals that promote the aggregation of more platelets. This creates a plug that helps stop the bleeding.

In addition to their role in clotting, platelets also release substances that facilitate the healing process, contributing to tissue repair and overall recovery. Their proper functioning is essential to maintaining hemostasis, the body's ability to prevent and stop bleeding, thus highlighting their significance in the circulatory system.

The other cells mentioned, such as red blood cells and white blood cells, have different functions. Red blood cells are primarily responsible for transporting oxygen throughout the body, whereas white blood cells pertain to immune response and defense against pathogens. Plasma cells, distinguished for antibody production, are specific to certain types of immune responses.