The transport system in earthworm., Biology

The transport system in earthworm
  1. The scientific name of earthworm is megascolex. It consists of hearts, blood vessel and blood.
  2. 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.
  3. 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.
  4. 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.
  5. 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.
  6. 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

Posted Date: 8/29/2012 9:05:25 AM | Location : United States







Related Discussions:- The transport system in earthworm., Assignment Help, Ask Question on The transport system in earthworm., Get Answer, Expert's Help, The transport system in earthworm. Discussions

Write discussion on The transport system in earthworm.
Your posts are moderated
Related Questions
Primary and secondary solid fuels are widely used in domestic and industrial purpose. Wood and coal constitute the important primary solid fuels. The important secondary solid fuel

The various organs involved  in  the digestion process are: Alimentary tract which  includes mouth, pharynx, esophagus stomach, small intestine, large intestine, appendix,  rec

STATE THE ECONOMIC AND ECOLOGICAL IMPORTANCE OF ECHINODERMS

Explain citric acid cycle In  the citric acid cycle, the oxaloacetate is first condensed with acetyl CoA, and  then regenerated  as  the cycle  is  comp!eted.  But these  react

Heat Exchangers :  This is an integral part of cardio pulmonary bypass and is designed to cool and warm the perfusate. non-sterile water from ice bath or warm water passed through

Hydrogen bonds are important for all of the following except:: a) Allowing carbohydrates to dissolve in water b) Stabilizing the three-dimensional shape of proteins. c) Ma

Determine the term - coupling factors The coupling factors, also called the F l ATPase, present on the inner mitochondrial membrane facing the matrix side, are a very complex a

Hypotension, hyperkalemia, taste disturbance, angiedema, renal insufficiency. In the absence of any symptoms of hypotension, and normal renal function and K + levels, the dosage

How can the concept of recombination frequency be used in genetic mapping? The Genetic mapping is the determination of the location of the genes in a chromosome. Besides determ

Temperate deciduous forest - Ecosystem The temperate forests are characterised by a moderate climate and broad-leafed deciduous trees, which shed their leaves in fall, are bar