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.

Objection, i have question that all scientist agree that the basic unit off...

i have question that all scientist agree that the basic unit off life is a cell and scientist said this to be a cell theory... and they also said that if a theory survive continuou

Ratios of different samples of nucleic acid, Ratios of the bases in differe...

Ratios of the bases in different samples of nucleic acid yielded the following results: a. A + C = 0.6 b. A + C = 1 c. A + G = 1.2

Taxonomy, what is taxonomy

what is taxonomy

Determine the general principles for incisions, General Principles for Inci...

General Principles for Incisions The general principles for placing incisions so as to create surgical flaps remain the same regardless of the reason for creating them. These a

Illustrate the applications of vitamin D, Illustrate the Applications of Vi...

Illustrate the Applications of Vitamin D Vitamin D 2 is mainly used in the preparation of various drug formulations. For the animal feed industry, a mineral stable dry powder

Show major treatments of diabetes mellitus, Q. What are the major treatment...

Q. What are the major treatments of diabetes mellitus? The general goal of the diabetes curing is to keep normal glycemic levels. Type I diabetes is treated with parenteral

What is the first polar body, What is the first polar body? How different i...

What is the first polar body? How different is it from the oocyte II? In oogenesis the oogonium differentiates into oocyte I (2n) and this cell enters meiosis. After finishing

How does the heart impel the blood, Q. How does the heart impel the blood? ...

Q. How does the heart impel the blood? The heart is a muscular organ that contains chambers right ventricle and right atrium right ventricle and and left atrium through which b

Phyletic lineage, defination of phyletic lineage?

defination of phyletic lineage?

Which of these are best and why, Suppose you were presented with two 40X le...

Suppose you were presented with two 40X lenses to use on your microscope, lens A had a numerical aperture of 0.56 and lens B had a numerical aperture of 0.75. Which is best and why

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages