Coloured SEM of a sperm in a fallopian tube

Coloured SEM of a sperm in a fallopian tube

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This image is part of the feature First Week Of Life

Credit: DR YORGOS NIKAS/SCIENCE PHOTO LIBRARY

Caption: Sperm in a fallopian tube. Coloured scanning electron micrograph (SEM) of a single human sperm (yellow) travelling through a fallopian tube (oviduct) of a female. After ejaculation sperm may stay alive in the female reproductive tract for about 48 hours. At the beginning of their journey in the vagina the sperm number about 300 million but only a few thousand survive to reach the ampullary region of the two female fallopian tubes where fertilisation of an egg may occur. The inner walls of the fallopian tube contain simple columnar cells of two types: ciliated cells (pink, with hair-like cilia), and secretory cells (blue). Magnification: x2,100 at 5x7cm size. Magnification: x7,200 at 8x10 inch size.

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Keywords: anatomy, epithelium, fallopian tube, histology, human, human body, in fallopian tube, reproduction, reproductive system, scanning electron micrograph, sem, sperm, spermatozoa

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