Dogfish gill, light micrograph
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Dogfish gill, light micrograph
Dogfish gill. Light micrograph of a section through a gill lamella from a lesser spotted dogfish (Scyliorhinus canicula). Running across centre is a brachial artery. The wavy parallel lines are the secondary lamellae of the gills, which are very thin and consist of two epidermal layers enclosing a layer of capillaries from the brachial arteries. These secondary lamellae increase the surface area and shorten the diffusion path, which speeds up the absorption of oxygen and expulsion of carbon dioxide through the gills. Fish use gills to obtain oxygen from the surrounding water. Magnification: x14 when printed at 10 centimetres across
Science Photo Library features Science and Medical images including photos and illustrations
Media ID 6278919
© DR KEITH WHEELER/SCIENCE PHOTO LIBRARY
Blood Blood Cells Blood Vessels Brachial Artery Breathe Capillaries Capillary Carbon Dioxide Cartilaginous Dog Fish Epidermis Gill Gills Ichthyology Lamellae Muscles Rays Respiration Respiratory System Shark Vascular Vessels Lesser Spotted Dogfish Light Micrograph Light Microscope Scyliorhinus Canicula Section Sectioned
EDITORS COMMENTS
This print showcases the intricate beauty of a dogfish gill, captured through a light micrograph. The image reveals a section of a gill lamella from a lesser spotted dogfish, providing an up-close look at its remarkable anatomy. Running across the center is the prominent brachial artery, while the wavy parallel lines represent the secondary lamellae of the gills. These secondary lamellae play a crucial role in respiration for fish like this dogfish. They are incredibly thin and consist of two layers of epidermis enclosing capillaries originating from the brachial arteries. By increasing surface area and shortening diffusion paths, these structures expedite oxygen absorption and carbon dioxide expulsion through the gills. The significance of gills to aquatic life becomes evident as we delve into this mesmerizing image. Fish rely on their gills to extract vital oxygen from their watery surroundings. This light micrograph magnified 14 times when printed at 10 centimeters across offers us an extraordinary glimpse into this essential aspect of marine biology. With its attention to detail and focus on biological intricacies, this print serves as both an educational tool for zoologists and an awe-inspiring piece for nature enthusiasts alike. It highlights not only the fascinating respiratory system but also emphasizes how different organisms have evolved unique adaptations to thrive in their environments – such as cartilaginous fishes like sharks with specialized gill structures.
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