Transport system in higher animals, Biology

Assignment Help:

Transport system in higher animals

  1. The circulatory system in higher animals has undergone several changes during evolution.
  2. The heart has become totally muscular.
  3. It pumps the blood into well-defined blood vessels
  4. The two chambered heart in fishes evolved into a three chambered heart in amphibians and finally into a four chambered heart in birds and mammals.
  5. Deoxygenated blood is collected from the body parts and sent to the respiratory system for oxygenation.
  6. In animals, like fish the blood is directly sent from the gills to all the body parts.
  7. In higher animals oxygenated blood is sent back to the heart and then from there to body parts.
  8. Single circuit circulation occurs in fish. In amphibians, reptiles, birds and mammals double circuit circulation takes place.

 

825_transport system in higher animals.png


Related Discussions:- Transport system in higher animals

What is the function of the skin in humans, What is the function of the ski...

What is the function of the skin in humans? The skin is the external covering of the body. In humans its major functions are protection, perception of information from the envi

Explain the prevalence of iron deficiency anaemia, Explain the Prevalence o...

Explain the Prevalence of iron deficiency anaemia? We can find out about the prevalence of anaemia if we know what percentage of population is suffering from anaemia. The WHO h

Geothermal energy, It is that energy which lies, embedded within earth's cr...

It is that energy which lies, embedded within earth's crust. In some places heated water comes out through the surface of earth as hot spring or steams. This hot geothermal water o

Explain indications of root-end filling (ref) - retrofilling, Explain Indic...

Explain Indications of Root-End Filling (REF) Retrofilling a. Persistent periapical pathosis resulting from an inadequate apical seal that cannot be corrected nonsurgically,

Divisions and representing species of the gymnosperms, Q. What are the majo...

Q. 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 cal

Pedigree charts, How do I complete a pedigree chart for genetics?

How do I complete a pedigree chart for genetics?

Describe the several steps by allosteric inhibition, Which of the following...

Which of the following are features of allosteric inhibition? During the infection, there are many different environments that P. multocida will encounter. In order to cause an inf

Determine the classification of colloidal systems, Classification of Colloi...

Classification of Colloidal Systems Thomas Graham referred to colloids as  the study of sub microscope dispersion. According to him, it dealt with the dispersed systems of a de

Chemoreceptors, Chemoreceptors These are receptors included in percept...

Chemoreceptors These are receptors included in perception of chemical stimuli. You will see that there are three kinds of Chemoreceptors among metazoans:  i) Those concerne

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