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.

Lens - organogenesis of eye and limb, Lens - Organogenesis of Eye and Limb ...

Lens - Organogenesis of Eye and Limb There is much experimental proof that the lens formation in many species is dependent on the induction by the optic vesicle while it conta

Spoilage of poultry and poultry products, Q. Explain Spoilage of Poultry an...

Q. Explain Spoilage of Poultry and Poultry Products? Poultry meat is the muscle tissue of chicken, ducks, turkey etc. The reference to poultry meat generally is the 'dressed ch

How have brain-imaging methods such as pet and mri, How have brain-imaging ...

How have brain-imaging methods such as PET and MRI affected neuroscience research and clinical care? Techniques which capture pictures of the living human brain at work have be

Structure and content of neuropsychological battery, Structure and Content ...

Structure and Content of NEUROPSYCHOLOGICAL BATTERY The battery contains 269 items, each of which may be scored on a 2- or 3- point scale. A score of 0 indicates normal perform

Define about right visual cortex, A question is flashed on a screen in the ...

A question is flashed on a screen in the left visual world of right-handed person Z. Person Z is a healthy individual with an normal nervous system. Person Z has a patch over Z's

Difference between plant systematic and taxonomy, Q. Difference between pla...

Q. Difference between plant systematic and taxonomy? Before coming to principles of taxonomy let us discuss the difference between taxonomy and systematic. Systematic is the sc

Thumb rule for dietary management, Q. Thumb rule for dietary management? ...

Q. Thumb rule for dietary management? The thumb rule for dietary management is to advice the patient to try to cut down or avoid: Red meats. Organ meats such as br

Define about oxygen molecule, How many pairs of electrons do the two oxygen...

How many pairs of electrons do the two oxygen atoms in an oxygen molecule share with each other? Explain your answer. The oxygen atoms share two pairs of electrons, sinc

Echinoderms, phylogenetic consideration

phylogenetic consideration

What are the keys for identifying plants and animals, Q. What are the Keys ...

Q. What are the Keys for Identifying plants and animals? Keys are determined as devices to help in identifying plants and animals. These are merely an aid to identification bas

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages