What is coelom - body cavity explain, Biology

Assignment Help:

What is Coelom - Body Cavity explain?

Among the bilaterally symmetrical organisms, animals have three different types of body plans with respect to body cavities. The term coelom is used to describe a specific type of body cavity, one that forms from within the middle layer of tissue in a body, the mesoderm. One type of animal body is solid, lacking an internal cavity, or coelom, between the digestive tract and the layers of the body wall. Organisms with a solid body plan are called Acoelomates. A second group of organisms develops an internal body cavity, but it forms between the endoderm and mesoderm instead of within the mesoderm itself. This group is called the Pseudocoelomates. The third group, the Coelomates, develops the coelom by parting the mesoderm.

While the presence or absence of a coelom may seem like a minor issue, it is in terms of evolution that the development of a body cavity takes on significance. Without a body cavity, the solid body limits circulation of gases and nutrients. Being in direct contact with the muscles of the body, the digestive and circulatory systems are subjected to pressure and distortion whenever the body bends. These factors limit flow in these systems, and therefore their efficiency. The presence of a coelom, then, provides interior space for the increased specialization and effective functioning of tissues and organs involved in circulation and digestion. Interior body space also provides for reproductive organs and systems that utilize internal fertilization and embryo development.

 


Related Discussions:- What is coelom - body cavity explain

Endoplasmic reticulum, ENDOPLASMIC RETICULUM (ER) Eucaryotic celIs have t...

ENDOPLASMIC RETICULUM (ER) Eucaryotic celIs have two major compartments- nucleus and cytoplasm. Cytoplasm was known to have no structure until the discovery of electron micrsscop

Define major divisions & representing species of gymnosperm, What are the m...

What are the major divisions and representing species of the gymnosperms? This group of plants can be separated into conifers (pine, sequoia, cypress), that have flowers called

Determine the mechanical properties of ti and ti alloy, Mechanical Properti...

Mechanical Properties of Ti and Ti Alloy as Compared to Bone  Titanium tends to seize when in sliding contact with itself or other metal. Titanium based alloys have a high co-e

x linked traits in humans, X-Linked Traits in Humans Let us first exam...

X-Linked Traits in Humans Let us first examine traits determined by genes on the X-chromosome, or the X-linked traits. The human X chromosome contains many genes that are requi

Leishmaniasis, Leishmaniasis Leishmaniasis is a group of disease cause...

Leishmaniasis Leishmaniasis is a group of disease caused by protozoa of the group Leishmania, and are transmitted to man by the bite of female sandfly (Phlebotomus). Three typ

Define theophrastus of eresus - taxonomy, Define Theophrastus of Eresus - T...

Define Theophrastus of Eresus - Taxonomy The Father of Botany (370-285 B.C.); of all the men who ever lived upon the earth certainly one of the most remarkable was Theophrastu

Peripheral membrane proteins, The Peripheral membrane proteins are less str...

The Peripheral membrane proteins are less strongly bound to the lipid bilayer than integral   membrane   proteins   and can be readily   erased   through washing   the membranes wi

Define the interaction of vitamin c with lead and mercury, Define the inter...

Define the interaction of vitamin c with lead and mercury? Vitamin C, lead and mercury: Iron alleviates lead toxicity but ascorbic acid is ineffective. Ascorbic acid alleviat

Open pulmonary valvotonzy, Open Pulmonary Valvotonzy, I nfundibular Rese...

Open Pulmonary Valvotonzy, I nfundibular Resection and Trans Annular Patch :  The pulmonary annulus may be narrow based on pre-operative investigations and on measurement

Fever, Fever influenza

Fever influenza

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd