Short notes on the structure of ooplasm of mature egg
The cytoplasm of the egg is called the ooplasm. It consists of a large amount of reserve food material stored in the form of yolk. In addition to yolk, pigment granules, water, RNA ribosomes, mitochondria and various other inclusions are also found in the cytoplasm. The outer layer of the ooplasm is referred to as the cortex and it consists of many microvilli and cortical granules.
The microvilli are formed as outgrowths of the plasma membrane and they help in the transportation of the substances into the egg during its development. The cortical granules are spherical bodies of various sizes. These granules are believed to originate from the golgi complex.