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

Objective of the law of contract, The law of contract is that the branch of...

The law of contract is that the branch of law which determines the circumstances in which promises made by the parities to a contract shall be legally binding on them. Its rules de

Planning of diabetes counselling, Q. Planning of diabetes counselling? ...

Q. Planning of diabetes counselling? You have helped the client to find out various solutions to a problem and understand the coping skills, ensured support from the family  su

Which type of defense cell do bacteria attract, Which type of defense cell ...

Which type of defense cell do bacteria attract and cause to multiply during the inflammation process? What is the name given to the waste material produced by the inflammation trig

In which environments bacteria live, Q In which environments bacteria live?...

Q In which environments bacteria live? Bacteria can be found in a variety of environments throughout the planet. There are bacteria in the air, on the surface, in fresh water,

Virus, assignment order

assignment order

Energy absorbed by plants, Normal 0 false false false E...

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

Pre-requisites of counselling, In diabetes mellitus counsellor help the dia...

In diabetes mellitus counsellor help the diabetic patient to cope up with the stress and take own decision for their treatment and life style changes. Decision making  capacity of

Procedure for testing vanaspati and rancidity in ghee, Procedure for testin...

Procedure for testing Presence of Vanaspati and Rancidity in Ghee? Carry out the steps enumerated herewith for conducting this exercise. For Vanaspati Checking: 1. Take 5

Golgi complex, Golgi complex is the organelles in animal cells having a se...

Golgi complex is the organelles in animal cells having a sequence of þattened sacs which sort, chemically modify, and package proteins produced on the rough endoplasmic reticulum.

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