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Briefly discuss the structural details of human egg. [3 MARKS]
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Entire description: 3 Marks
A human egg is covered by three layers- Inner vitelline membrane, middle zona pellucida, and outer corona radiata. Internally, the egg possesses a central nucleus surrounded by the cytoplasm. The yolk is absent in human egg or ovum and is called alecithal egg. During maturation, the ovum extrudes 2 to 3 polar bodies on one side, called animal pole. The opposite side of animal pole is called vegetal pole.
A human egg is covered by three layers- Inner vitelline membrane, middle zona pellucida, and outer corona radiata. Internally, the egg possesses a central nucleus surrounded by the cytoplasm. The yolk is absent in human egg or ovum and is called alecithal egg. During maturation, the ovum extrudes 2 to 3 polar bodies on one side, called animal pole. The opposite side of animal pole is called vegetal pole.
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