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.

Digestive system - mouth, MOUT H - It is as transverse slit. It is ...

MOUT H - It is as transverse slit. It is pseudo type i.e. not open directly into alimentary canal. Mouth is covered by upper & lower movable lips. Movement is due to arb

Role of lymphatic system - circulation, Normal 0 false false ...

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

Are hormones only proteins, Are hormones only proteins? Some hormones a...

Are hormones only proteins? Some hormones are proteins, such as insulin, glucagon and ADH, others are derived from proteins (changed amino acids), like adrenaline and noradrena

How do fishes do gas exchange, Q. How do fishes do gas exchange? Fishes...

Q. How do fishes do gas exchange? Fishes "breath" through gills, branchiae or Gills, are highly vascularized organs specialized in gas exchange under water and present in aquat

Body fluids – circulation, Normal 0 false false false E...

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

Transmission electron microscopy, Transmission Electron Microscopy The so...

Transmission Electron Microscopy The source of illumination in a TEM is a tungsten filament that emits electrons. A vacuum is created to prevent the collision of electrons with a

What are the lateral meristems, What are the lateral meristems? Where can t...

What are the lateral meristems? Where can they be found and which kind of plant growth do they promote? The Lateral or the secondary, meristems, are the cambium and the phellog

Compound feed prepration, Compound feed prepration The compounding of anim...

Compound feed prepration The compounding of animal feed involves processing and blending of raw feed ingredients of wide ranging physical, chemical and nutritional composition int

Applied biology, what is applied biology

what is applied biology

Physiology, using an example in each case,describe the three main feeding m...

using an example in each case,describe the three main feeding methods used by animals based on the type of food available

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages