Dictionary > Coelom

Coelom

Definition
noun, plural: coeloms
(1) A fluid-filled body cavity formed from the splitting of lateral plate mesoderm during embryonic development
(2) A body cavity
Supplement
Animals may be grouped based on the coelom:

Coelom is a crucial step in evolution since a complicated body plan would benefit from it. A coelom allows compartmentalization to separate biological systems that carry out differing major functions. For instance, animals without coelom (acoelomates) would have to rely on diffusion to transport nutrients around the body. Since acoelomates (such as flatworms) are relatively small and have less intricate body plan (flat), diffusion is enough to carry out transport function. However, for animals (such as mammals) that have complicated body plans would need other transport system (circulatory system) apart from diffusion. A coelom would therefore be useful to separate circulatory system from abdominal organs that carry out a different major function (which is digestion). Thus, both of these systems can perform their function separately and with more efficiency. Coelom also allows organs to grow and change in position or shape.
Word origin: Greek koilōma (cavity)
Also called:

Mentioned in:

  • Abdominal cavity


  • You will also like...

    Sigmund Freud and Carl Gustav Jung
    Sigmund Freud and Carl Gustav Jung

    In this tutorial, the works of Carl Gustav Jung and Sigmund Freud are described. Both of them actively pursued the way h..

    Freshwater aquatic plankton
    Freshwater Communities & Plankton

    Planktons are microscopic organisms that live suspended in aquatic habitats. There are two groups: the phytoplanktons an..

    Genetics and Evolution
    Genetics and Evolution

    Humans are diploid creatures. This means that for every chromosome in the body, there is another one to match it. Howeve..

    Direct and indirect physiologic effects of growth hormone
    Animal Growth Hormones

    Hormones are produced in the endocrine glands of animals. The pituitary gland and hypothalamus are the most impor..

    Biological Viruses
    Biological Viruses

    Viruses possess both living and non-living characteristics. This unique feature distinguishes them from other organisms...

    Freshwater lake ecosystem
    Freshwater Producers and Consumers

    Freshwater ecosystem is comprised of four major constituents, namely elements and compounds, plants, consumers, and deco..

    Related Articles...

    No related articles found

    See all Related Topics