The Human Ovum
The Human Egg Cell.
The human egg cell is also referred to as ovum. Using a spherical composition it is the most significant cell inside the human body calculating about 0. 2mm in diameter. The function in the ovum is always to reproduce, the moment fertilized by sperm cellular the ovum is capable of creating a new living organism. The size and form of the ovum gives it space to store and create nutrients (see fig 3) (Boyle and Senior 2008) The ovum can be bounded by egg follicles of the ovaries and is produced by primitive germ cells that happen to be located in the substance from the ovaries, this procedure is called oogenesis. Once a month during ovulation the ovum will be released because of an opening of your follicle in the surface in the ovary. The ovum can now be carried by uterine tube into the uterus. If the egg has not been fertilized it is unveiled from the womb during menstruation. The ultra-structure of the ovum consists of; the nucleus, nucleolus, cytoplasm, zona pellucida as well as the corona radiata(see fig. several. ) The nucleus referred to as germinal vesicle is central to the ovum and Contains most of the innate material (DNA). The nucleus contains a nucleolus referred to as germinal area and they are the two enclosed by a nuclear membrane. The cytoplasm of the ovum is made up of fat and proteins like chemicals enabling the cell to maintain and generate nutrients to nourish the embryo in the beginning of development. The zona pellucida is known as a thick external membrane featuring protection nevertheless can be quickly penetrated by sperm cell. The reino radiata, attached with the sector pellucida, is made up of two to three tiers of cellular material produced from the follicle. The primary function with the corona radiata is to give you the ovum with protein. (Human Anatomy)