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

What is diagnosis of heart disease in the newborn, What is Diagnosis of Hea...

What is Diagnosis of Heart Disease in the Newborn ? Clinical diagnosis of heart disease in the newborn can be quite challenging. Manifestations of potentially life threatening

Define vapor-pressure lowering and osmotic pressure, Define Vapor-pressure ...

Define Vapor-pressure lowering and Osmotic pressure? 1. Vapor-pressure lowering: the decrease in the vapor pressure of a solution containing nonvolatile solutes, compared to th

Meiosis, How do meiosis do in developing of new varieties of crops

How do meiosis do in developing of new varieties of crops

Who could be the parents of a child, This problem refers to the MN and ABO ...

This problem refers to the MN and ABO loci mentioned in class. It also refers to the Rh locus, which is responsible for the positive/negative part of the blood type. The Rh+ allele

Hypomagnesemia, H y p o ma g n e s e m i a It is also known...

H y p o ma g n e s e m i a It is also known as grass staggers or lactation or grass tetany and results in clonic and tonic muscular spasms and convulsions. E

What are the amylase inhibitors, What are the Amylase Inhibitors? Inhib...

What are the Amylase Inhibitors? Inhibitors of the enzyme a-amylase are found in wheat, rye, beans, mango, legumes, potatoes, sorghum (jowar) and oats. Most amylase inhibitors

Corpus cardiacum - endocrine organs, Corpus Cardiacum - Endocrine Organs ...

Corpus Cardiacum - Endocrine Organs We before mentioned that corpus cardiacum (pl. corpora cardiaca) is a neurohemal organ in insects. It is gland of neural origin. They are c

How are platelets formed, How are platelets formed? What is the function of...

How are platelets formed? What is the function of platelets? What consequences does the clinical condition known as thrombocytopenia yield? Platelets, also called as thrombocyt

Male reproductive disorders, MALE REPRODUCTIVE DISORDERS Generally, ab...

MALE REPRODUCTIVE DISORDERS Generally, about 5-10% of cattle bulls reaching sexual maturity would be suffering from poor reproductive efficiency or sterility. Crossbreeding ha

What is the probability of carrier of the recessive allele, Two parents who...

Two parents who are each known to be carriers of an autosomal recessive allele have four children. None of the children has the recessive condition. What is the probability that

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