Frog tadpole, light micrograph

Frog tadpole, light micrograph

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Credit: DR KEITH WHEELER/SCIENCE PHOTO LIBRARY

Caption: Frog tadpole. Light micrograph of a longitudinal section through the head and body of a tadpole of the European common frog (Rana temporaria). The tip of the head is at top and part of the tail is at bottom. Frogs are air-breathing amphibians. Their larval stage (tadpoles) are wholly aquatic, and develop from fertilised eggs. This is still in the external gill stage, before lungs have developed. The gills are most clearly seen at centre right. Within the body of the tadpole are internal organs such as the heart and the intestines (dark red), leading to the anus by the tail. Magnification: x13 when printed at 10 centimetres tall.

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Keywords: amphibian, anatomical, anatomy, animal, aquatic, biological, biology, body, common frog, developmental biology, digestive system, dissected, dissection, european common frog, external gills, fauna, frog, gill, head, heart, herpetology, histological, histology, internal, internal organs, intestines, larval stage, life cycle, light micrograph, light microscope, lm, longitudinal, nature, rana temporaria, section, sectioned, tadpole, white background, wildlife, zoological, zoology

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