The transport system in earthworm., Biology

Assignment Help:

The transport system in earthworm

The scientific name of earthworm is megascolex. It consists of hearts, blood vessel and blood.
There are 8 pairs of hearts in the earthworm which are placed laterally inside the body. Blood vessels are closed tubes and are connected to hearts.
These hearts connect the two major blood vessels in the earthworm - a DORSAL BLOOD VESSEL and a VENTRAL BLOOD VESSEL. These are above and below the alimentary canal.
The dorsal blood vessel is a receiving blood vessel. It receives blood from various organs present in each segment of the body. So, it acts as a chief vein in the body.
The ventral blood vessel is a distributing vessel - it supplies blood to various organs present in each body segment. So, it acts as a chief artery in the body.
In the dorsal blood vessel, blood flows in posterior to anterior direction and in the ventral blood vessel it flows in anterior to posterior direction.

Blood flow is from Body parts → Dorsal Blood Vessel → Hearts → Ventral Blood Vessel→ Body parts.

2191_The transport system in earthworm.png

Related Discussions:- The transport system in earthworm.

What is an example of intraspecific competition, Q. What is an example of i...

Q. What is an example of intraspecific competition? The Intraspecific competition occurs in practically all species, for instance, the competition of humans for a job.

How can we control the disease cholera, How can we control the disease Chol...

How can we control the disease Cholera Control: Individuals infected with cholera require oral rehydration therapy with NaCl plus sucrose, sodium bicarbonate and potassium ch

What is the generic function of leukocytes, What is the generic function of...

What is the generic function of leukocytes? What are leukocytosis and leukopenia? The generic function of leukocytes is to contribute in the defense of the body against strange

What percentage should be homozygous, If 40% gene pool is heterozygous then...

If 40% gene pool is heterozygous then what percentage should be homozygous?

Define basic function of secretin in the digestive process, Q. Where is it ...

Q. Where is it produced and what is the function of secretin in the digestive process? Secretin is made in the duodenum the chyme acidity causes the duodenum to release this ho

What are plasmids, What are plasmids? What is the importance of plasmids fo...

What are plasmids? What is the importance of plasmids for the recombinant DNA technology? Plasmids are circular fragments of DNA that are accessories to the major bacterial DNA

Natural selection is such a powerful force, Natural selection is such a pow...

Natural selection is such a powerful force in evolution because cells with even a small growth advantage quickly outgrow their competitors. To illustrate this process, consider a b

What is the structural depiction of a carboxyl group, Q. What is the struct...

Q. What is the structural depiction of a carboxyl group? Carboxyl groups have a carbon attached to one hydroxyl group by a simple bond and one oxygen by a double bond. The othe

Explain the alterations occurring in egg, Alterations occurring in egg ...

Alterations occurring in egg The quality, flavour, composition and functional properties of eggs are adversely affected more rapidly and to a greater extent by the speed and co

What main idea, What key idea, contained in Malthus's essay on populations,...

What key idea, contained in Malthus's essay on populations, helped Darwin formulates his theory of natural selection?

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages