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Blood platelets
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Blood platelets
Blood platelets. Coloured scanning electron micro- graph (SEM) of activated blood platelets. Platelet cells (thrombocytes) are formed in the bone marrow, and circulate in the bloodstream in large numbers. When unactivated they are round/oval, whereas activated platelets develop pseudopodia or extensions from the cell wall as seen here. Platelets function in two ways: they plug defects in the walls of damaged blood vessels, and they are involved in the clotting of blood. They also release serotonin which constricts blood vessels. Magnification: x3, 300 at 6x6cm size
Science Photo Library features Science and Medical images including photos and illustrations
Media ID 6421046
© NIBSC/SCIENCE PHOTO LIBRARY
Activated Active Blood Clotting Haematology Histology Human Biology Platelet Platelets Thrombocyte Circulation Circulatory System
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This print from Science Photo Library showcases the intricate world of blood platelets. The coloured scanning electron micrograph (SEM) reveals activated blood platelets in all their glory. These tiny platelet cells, also known as thrombocytes, are produced in the bone marrow and can be found circulating abundantly throughout our bloodstream. In their unactivated state, these remarkable cells appear round or oval-shaped. However, when they become activated, a fascinating transformation occurs. Pseudopodia or extensions emerge from the cell wall, as beautifully captured in this image. Blood platelets play a crucial role in maintaining our health by serving two primary functions. Firstly, they act as natural repairmen for damaged blood vessels by plugging any defects that may arise on vessel walls. Secondly, they contribute to the clotting process of our blood – an essential mechanism for preventing excessive bleeding. Moreover, these extraordinary cells release serotonin which aids in constricting blood vessels when needed. This incredible ability allows them to actively regulate circulation within our bodies. With a magnification of x3,300 at 6x6cm size, this photograph provides us with an up-close look into the complex world of hematology and human biology. It serves as a reminder of how intricately designed our circulatory system is and highlights the vital role played by these activated platelets in maintaining normal bodily functions.
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