How blood clots.

Year Published: 1969

Format: 16mm

Sound: sound

Description: Human circulatory system and functions are illustrated through animation and cinemicroscopy. Time-lapse photography reveals composition of blood and its separation into clots and serum. Describes how formation of a blood clot occurs through reaction of platelets with clotting agents found in plasma, and generation of paltelets from large cells found in bone marrow. Shows how plasmin dissolves clots when they are no longer necessary Search Educational Film Journals at Media History Project for references to this film Summary Explains the composition of blood and shows its separation into serum and clots. Illustrates how a blood clot forms through the reaction of platelets with several clotting agents that are found in plasma. Uses animation and microphotography to depict the actual generation of platelets from large cells found in the bone marrow.

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