False-colour SEM of a spermatozoon on uterus wall

False-colour SEM of a spermatozoon on uterus wall

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This image is part of the feature Motta: Reproduction

Credit: PROF. P. MOTTA/DEPT. OF ANATOMY/UNIVERSITY "LA SAPIENZA", ROME/SCIENCE PHOTO LIBRARY

Caption: A spermatozoon on the uterine mucosa. False-colour scanning electron micrograph of a spermatozoon floating over the endometrium, the internal wall of the uterus. Spermatozoa have pear-shaped heads about 7 microns long and a tail about 60 microns long. This image also shows the two different types of simple columnar cells which populate this area: ciliated (orange bottom left) and secretory (pink, yellow). During their journey through the uterus towards the Fallopian tubes spermatozoa undergo a capacitation process which enable them to penetrate and then fertilise an egg. Magnification: x2200 at 6x7cm size. x3465 at 4x5".

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Keywords: anatomy, ciliated cell, endometrium, false-coloured, human body, in uterus, reproduction, reproductive system, secretory cell, sperm, spermatozoa, uterine mucosa, uterine wall, uterus

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