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.

Protozoa, locomotion in parameceum

locomotion in parameceum

Contamination of the implant body before insertion, Contamination of the Im...

Contamination of the Implant Body before Insertion The implant may be contaminated by manufacturing error, by the operator, from non titanium instrumentation and by the bacteri

What is a distilling flask and how is it used, What is a distilling flask a...

What is a distilling flask and how is it used? A distilling flask is a round bottom flask that often has two openings, and some of them have a long neck.

What is the health monitoring of infant, Explain the Health Monitoring of I...

Explain the Health Monitoring of Infant? Infections are a major cause of malnutrition in children. For many of the preventable early childhood diseases, vaccines are now avail

Explain the nutritional role of minerals in foods, Nutritional and function...

Nutritional and functional role of minerals in foods Essential elements including the main elements and a number of trace elements fulfill various functions: as electrolytes, a

Explain vitamin B complex, Vitamin B Complex The vitamin B complex comp...

Vitamin B Complex The vitamin B complex comprises the vitamins B 1 , B 2 , B 6 and B 12 as well as the vitamin B factors biotin, folic acid, nicotinic acid and its amide as w

What do you understand by cyanogenic glycosides, Q. What do you understand ...

Q. What do you understand by Cyanogenic glycosides? Cyanogenic glycosides are present in a number of food plants and seeds. Cassava is a staple dietary item in tropical Afri

What are their respective modes of transmission, What are some human diseas...

What are some human diseases caused by bacteria and what are their respective modes of transmission? The major human bacterial infections transmitted by respiratory secretions

Air movements at tropical latitudes, Air movements at tropical latitudes ...

Air movements at tropical latitudes Let us now explain air movements at tropical latitudes. The surface air that rushes to fill the equatorial void from the north is deflected

Reproduction, What is the difference between asexual and sexual reproductio...

What is the difference between asexual and sexual reproduction

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