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.

Pneumothorax, Pneumothorax Entry of air in the pleural cavity is calle...

Pneumothorax Entry of air in the pleural cavity is called pneumothorax. It may be spontaneous, result of penetrating or non-penetrating injuries. Closed Pneumothorax

Describe about cardiac examination, Describe about cardiac examination? ...

Describe about cardiac examination? Physical examination of the cardiovascular system is mainly discussed under four headings i.e., inspection, palpation, percussion and auscul

Define the working of cyclomixer, Define the working of Cyclomixer? Thi...

Define the working of Cyclomixer? This is an electrical mixer used for mixing the contents of a test tube. The speed of the mixer can be adjusted to your requirement. This is a

What does ecological niche of an organism represent, a) Mention the scienti...

a) Mention the scientific term used for modified form of reproduction in which seeds are produced without fusion of gametes. b) What does ecological niche of an organism represe

What are the types of nutrients, Q. What are the types of nutrients? Explai...

Q. What are the types of nutrients? Explain the functions of nutrients? Types of nutrients  • Carbohydrates • Proteins • Fats • Minerals • Vitamins • Water Fu

Effect on water bodies - dissolved oxygen (do), Effect on Water Bodies - Di...

Effect on Water Bodies - Dissolved Oxygen (DO) Most aquatic, organisms respire with oxygen dissolved in water. The quantity of dissolved oxygen in a unit volume of aerated wa

Technique-recurrence of angina, Technique:  Careful re-opening of ste...

Technique:  Careful re-opening of sternum and release of steinum from the underlying adhesion is done. Femoral artery and vein are exposed for going on femoro fenioral bypass

Genetics, What does skin color in man shows?

What does skin color in man shows?

Air pollutants - effects on plants, Air pollutants - Effects on plants ...

Air pollutants - Effects on plants Particulate matter such as cement, coal, petro coke, dust, and fly-ash screen the light and thus change its quantity and quality. Dust plug

Explain genetic information that is transmitted hereditarily, Which is the ...

Which is the biological molecule that contains the genetic information that is transmitted hereditarily and controls the cellular functioning? The hereditary molecule that cont

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