False-colour SEM of sperm on uterine mucosa

False-colour SEM of sperm on uterine mucosa

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Credit: PROFESSORS P.M. MOTTA, K.R. PORTER & P.M. ANDREWS/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 (bottom right) 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-yellow) and secretory (blue). 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: x1320 at 6x7cm size. x1850 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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