Dictionary > Egg cell

Egg cell

Definition
noun, plural: egg cells
(1) Female gamete; female sex cell; female reproductive cell.
(2) Unfertilized ovum, which is typically haploid, especially in human females.
Supplement
In humans, the ovum is the largest cell visible to the naked eye. It is about 0.1 mm in size in humans. It is produced in the ovary and eventually released into the fallopian tube during ovulation. It consists of protoplasm (with some yolk) surrounded by a thin cell wall (vitelline membrane). It may also have a noncellular covering (zona pellucida). Within the cell is a large nucleus (germinal vesicle), with a nucleolus (germinal spot). The cell is haploid so that when a sperm cell fertilizes it, it forms a diploid zygote.
Synonyms:

Compare: sperm cell


You will also like...

Biological Cell Defense
Biological Cell Defense

Organisms employ different strategies to boost its defenses against antigens. Humans have an immune system to combat pat..

Golgi apparatus (3-D illustration)
Role of Golgi Apparatus & Endoplasmic Reticulum in Protein Synthesis

The endoplasmic reticulum and Golgi apparatus are the organelles involved in the translation step of protein synthesis a..

Evolution of Life - Ancient Earth
Evolution of Life – Ancient Earth

Autotrophs flourished, absorbing carbon and light. Soon after, primitive life forms that could assimilate oxygen thrived..

Sensory systems
Sensory Systems

A sensory system is a part of the nervous system consisting of sensory receptors that receive stimuli from the internal ..

green leaf - close up view
Leaves

Leaves are the major photosynthetic organ of a plant. Apart from that, they are also crucial to water movement. In this ..

3D rendering of an antibody
Passive and Active Types of Immunity

Lymphocytes are a type of white blood cell capable of producing a specific immune response to unique antigens. In thi..