Transport system in higher animals, Biology

Assignment Help:

Transport system in higher animals

The circulatory system in higher animals has undergone several changes during evolution.
The heart has become totally muscular.
It pumps the blood into well-defined blood vessels
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.
Deoxygenated blood is collected from the body parts and sent to the respiratory system for oxygenation.
In animals, like fish the blood is directly sent from the gills to all the body parts.
In higher animals oxygenated blood is sent back to the heart and then from there to body parts.
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

How many possible codons are there, A codon comprise three nucleotides. The...

A codon comprise three nucleotides. There are four possible nucleotides, each of which has an equal probability of being in any one of three spots. How many possible codons exist?

Explain evolutionary classification, Evolutionary Classification Evolut...

Evolutionary Classification Evolutionary classification combines aspects of both phenetic and cladistic systematic. Evolutionary taxonomists attempt to show in their classifica

What does liquescence digestive enzyme do, What does Liquescence digestive ...

What does Liquescence digestive enzyme do? It helps to normalize the secretion of digestive juices and enzymes in the gastrointestinal tract

What is qt dispersion, Q. What is QT Dispersion? Is the difference betw...

Q. What is QT Dispersion? Is the difference between the QT interval measured from one part of the heart and the QT interval measured from another part of the heart. The QT inte

Lymphatic vessels, Lymphatic Vessels The function of lymphatic vessel...

Lymphatic Vessels The function of lymphatic vessels is to aid in the return of interstitial fluid to intra-vascular volume. They assist with transport of lipids from th

What is the logic of the transfusional compatibility, What is the logic of ...

What is the logic of the transfusional compatibility concerning the ABO blood group system? The transfusional compatibility for the ABO system takes into account the antigens s

Which molecule should be most radioactive, Yeast is cultured in the presenc...

Yeast is cultured in the presence of radioactive phosphate and the following biological molecules are purified. Which molecule should be most radioactive? A. An oligosaccharide B.

Cell and molecular, Compare and contrast the effect of a deletion in the op...

Compare and contrast the effect of a deletion in the operator of the lactose operon with one in the operator of the tryptophan operon.

Phylum ciliophora - protozoan, Phylum Ciliophora - Protozoan Simple ci...

Phylum Ciliophora - Protozoan Simple cilia or compound ciliary organelles typical in at least one stage of life cycle; subpellicular cilia present even if surface cilia are ab

Diastolic pressure, Palpate the radial or brachial artery pulsation while i...

Palpate the radial or brachial artery pulsation while inflating the cuff to a level of 30 mm Hg above the point at which the brachial or radial artery pulsation disappears. Reinfla

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages