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Heart blood vessels, SEM
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Heart blood vessels, SEM
Heart blood vessels. Coloured scanning electron micrograph (SEM) of a freeze-fractured section through cardiac muscle, exposing the blood vessels of the heart. Large blood vessels are seen lined with endothelium (the single-celled layer coating the inside of blood vessels, brown). The smaller blood vessels (capillaries, small holes) supply blood to all parts of the heart. The blood vessels have been emptied of blood. Cardiac (heart) muscle continually contracts (under subconscious control) to pump blood round the body. As such, it requires a rich supply of oxygenated blood, explaining the vascularity (presence of many blood vessels) of this tissue. Magnification: x300 at 6x7cm size
Science Photo Library features Science and Medical images including photos and illustrations
Media ID 6421165
© STEVE GSCHMEISSNER/SCIENCE PHOTO LIBRARY
Arteries Blood Vessels Capillaries Capillary Cardiac Circulatory Endothelial Endothelium Fracture Fractured Freeze Fracture Freeze Fractured Histology Lining Muscular Net Work Supply Tissue Vascular System Veins Vessel Artery Circulation Section Sectioned Vein
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This print showcases the intricate network of blood vessels within the human heart. In this coloured scanning electron micrograph (SEM), a freeze-fractured section of cardiac muscle reveals the remarkable complexity and beauty of the heart's circulatory system. The image highlights both large and small blood vessels, with the larger ones lined by endothelium, a thin layer that coats the inside of blood vessels in a rich brown hue. The smaller capillaries, resembling tiny holes, play a crucial role in supplying oxygenated blood to every part of the heart. Interestingly, these blood vessels have been emptied of their life-giving contents for this SEM capture. However, it is important to note that cardiac muscle continuously contracts under subconscious control to pump oxygen-rich blood throughout our bodies. The vascularity displayed in this tissue demonstrates its high demand for oxygenated blood due to its constant activity. This histological marvel provides insight into how our hearts function as powerful pumps responsible for sustaining our entire body's circulation. With a magnification level set at x300 on a 6x7cm size scale, this photograph from Science Photo Library offers us an awe-inspiring glimpse into one of nature's most vital organs – reminding us just how intricately designed and interconnected our own bodies truly are.
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