The transport system in earthworm., Biology

Assignment Help:
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


Related Discussions:- The transport system in earthworm.

Explain the interaction of vitamin a with vitamin e, Explain the Interactio...

Explain the Interaction of Vitamin A with Vitamin E? Of the various nutrients, the interaction of vitamin E, proteins, zinc and iron with vitamin A is of significance. Know? Le

What is adaptive radiation, What is adaptive radiation? Adaptive radiat...

What is adaptive radiation? Adaptive radiation happens when a new population in a new environment, like an island, undergoes divergent evolution until the descendant population

Information processing in sensory neuron, Information Processing in Sensory...

Information Processing in Sensory Neuron You have previously seen that the sensory neuron transmits the information it receives, as an action potential along its axon. We desc

Urine formation by excretory organs, Normal 0 false false f...

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

What are the main available vaccines against poliomyelitis, Q. What are the...

Q. What are the main available vaccines against poliomyelitis? The vaccines (medicines) used against poliomyelitis are the Sabin vaccine and the Salk vaccine. The Sabin vaccine

Taxonomy, Explain cytological approach in taxonomy.

Explain cytological approach in taxonomy.

What is signal transduction, Signal transduction occurs when an extracellul...

Signal transduction occurs when an extracellular signaling molecule activates a cell surface receptor. In words, this receptor change intracellular molecules changes a response. Th

Explain about the browning reactions, Explain about the Browning Reactions?...

Explain about the Browning Reactions? The Browning Reactions are complex reactions which occur when foods are processed. In some the brown flavour is highly desirable and is in

Agro industrial-animal wastes, Animal wastes Large quantities of anima...

Animal wastes Large quantities of animal wastes are available in the country but generally they are low in nutrient content with poor feeding value to the animals. However, po

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd