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
Feeding management Feeding management deals about the in-house management in which the feed consumption pattern is well understood in the sheds and suitable alterations are made

Define Stripping Perforation - Types of Root Perforation It is latral perforation caused by over instrumentation through a thin wall of the root. Most common on the in

Abscission - Effects of Plant Growth Regulators Abscission of leaves and fruit is one of the more obvious characteristics of senescence. Leaves do not fall simply because they

Question 1 Write a short note on the following                           1 Class polychaeta

Diagnosis  History and Physical examination.   John's criteria.   Echocardiogram show valvular insufficiency.   Chest X-ray cardiomegaly if CHF present.   EC

A balanced diet must have enough energy to meet the body's needs. What else must it have?    In addition to sufficient energy, a balanced diet must have proteins, car


Yeast is cultured in the presence of radioactive phosphate and the following biological molecules are purified. Which molecule should be most radioactive? A. An oligosaccharide B.

essay on respiratory structures of living organisms

Which are the characteristics and organs of the digestive system of earthworms related to the type of diet of these animals? Earthworms eat decomposing organic material and sma