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.

Eliminate heat energy at the rate of approximately, A large leaf on a plant...

A large leaf on a plant in bright sunshine evaporates 5 grams of water per hour. Cooling the leaf through evaporation in this manner enables the plant to eliminate heat energy at t

Basic structural pattern of limbs, Basic structural pattern of limbs ...

Basic structural pattern of limbs The common structural pattern of tetrapod limbs is extremely clear expressed in their skeletal components and in the manner they are organiz

What is neurological complications congenital heart disease, What is Neurol...

What is Neurological Complications of Congenital Heart Disease ? Neurological complications contribute substantially to mortality and morbidity from congenital heart disease.

Essential for photosynthesis, Aim : To prove that light is essential for ph...

Aim : To prove that light is essential for photosynthesis. Apparatus : A potted plant, a light screen, beaker, iodine solution. Procedure : Keep a potted plant in darkness for tw

Roles of abscisic acid, Roles of Abscisic Acid Abscisic acid (ABA) is ...

Roles of Abscisic Acid Abscisic acid (ABA) is a particularly interesting hormone with regard to the regulation of its own levels. Its levels rise and fall dramatically in seve

Explain directive and non-directive counseling, Directive and Non-directive...

Directive and Non-directive Counseling Directive Counseling tends to be appropriate when the counselor is aware of the problem and/or is concerned about the behavio

Wind-environmental components, Wind Strong current of air is known as w...

Wind Strong current of air is known as wind, it is an important ecological factor as it affects plant life mainly on flat plains, along sea coasts and at high altitudes in moun

What are the ploidies of the generated cells, In which meiotic division doe...

In which meiotic division does the separation of the homologous occur? What are the ploidies of the generated cells after the end of that process? The separation of the homolog

Enzymes, what is rennin? how does it work? and what is its optimum pH level...

what is rennin? how does it work? and what is its optimum pH level and activity temperature?

Which is the brain regions associated with memory, Q. Which is the brain re...

Q. Which is the brain regions associated with memory? According to researchers some of the major regions of the nervous system associated with the memory phenomenon are the hip

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages