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  4. The anterior portion of the sperm head which is covered by a cap-like structure called

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Q. The anterior portion of the sperm head which is covered by a cap-like structure called

J & K CETJ & K CET 2014Human Reproduction

Solution:

The anterior portion of the sperm head which is covered by cap-like structure is called acrosome. It contain hydrolytic enzyme called sperm lysins, e.g., acrosin, hyaluronidase and neuraminidase (a trypsin like enzyme). Besides acrosomes, head also contain a lightly fitting nucleus, whose shape is species specific. Another regions of human sperm are neck, middle piece and tail (flagellum).