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 are the gynoecium and the androecium, Q. What are the gynoecium and th...

Q. What are the gynoecium and the androecium? What are the other structures of flowers? Androecium is set of male reproductive structures of flowers it comprehends the stamens

Define categories of indicators of malnutrition, Define Categories of Indic...

Define Categories of Indicators of Malnutrition? The indicators may fall under the following categories: 1. Macro indicators for sector-wide monitoring and evolution, 2.

Factors controlling stomatal aperture, Factors Controlling Stomatal Apertur...

Factors Controlling Stomatal Aperture 'Khul Ja Sim Sim' the two rocks slide and the gates to a great treasure open. With these magic words "Ali Baba and Chalis Chor" could ope

What are the responsibilities of cber, Question 1: Explain how drug app...

Question 1: Explain how drug approval is obtained through various Regulatory Bodies in India using a flow diagram? List out the different regulatory bodies in India L

Explain in brief about unicellular “animals”, Single-cell organisms, protis...

Single-cell organisms, protists, have always been a problem for taxonomists who have trouble describing categories for organisms. Their mixed feeding habits that include being capa

Applications of genetic engineering, Q. Applications of genetic engineering...

Q. Applications of genetic engineering? Applications of genetic engineering in different fields are: • Agriculture: Crops having larger yields, drought -and disease -resis

Chapter-2, multiple choise question

multiple choise question

Important Value Index (IVI) calculation, How can we calculate the IVI from ...

How can we calculate the IVI from a total number of (30) quadrats (each 30 x 30 m quadrats)

Define methods for estimation of iron and haemoglobin, Define Methods for E...

Define Methods for Estimation of Iron and Haemoglobin? In this section we shall study the procedure involved in estimation of iron in any sample first followed by a review on t

Its possible to obtain probability of emergence of genotype?, How is it pos...

How is it possible to obtain the probability of emergence of a given genotype formed of more than one pair of different alleles with independent segregation from the knowledge of t

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages