SEM of sperm in a seminiferous tubule

SEM of sperm in a seminiferous tubule

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Credit: PROF. P. MOTTA/DEPT. OF ANATOMY/UNIVERSITY

Caption: Spermatozoa. False-colour scanning electron micrograph of a bundle of spermatozoa in a seminiferous tubule. The image shows sperm tails with pear-shaped heads visible at bottom. Spermatozoa's formation occurs in the seminiferous tubules in the testes and is divided into two phases called spermatogenesis and spermiogenesis. In the first, the male gamete cells are produced with 23 chromosomes; in spermiogenesis they differentiate into spermatozoa consisting of head, neck and tail. The round brown cells at top are male gametes at the beginning of spermiogenesis. Magnification: x225 at 6x7cm size. x325 at 4x5 inch.

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Keywords: anatomy, false-coloured, human body, in seminiferous tubule, male, reproduction, reproductive system, seminiferous, seminiferous tubule, sperm, sperm phase, spermatogenesis, spermatozoa, spermiogenesis

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