The transport system in earthworm., Biology

Assignment Help:

The transport system in earthworm

The scientific name of earthworm is megascolex. It consists of hearts, blood vessel and blood.
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.
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.
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.
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.
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.

Temperate evergreen forest - ecosystem, Temperate evergreen forest - Ecosys...

Temperate evergreen forest - Ecosystem Many parts of the world have a mediterranean type of climate which is characterised by warm, dry summers and cool, moist winters. These

TISSUES, difference between axon and cyton

difference between axon and cyton

Endomitosis, #questwhy and where endomitosis happens?ion..

#questwhy and where endomitosis happens?ion..

Immediate cardiac care (24- 72 hours) after operation, Immediate Care (24...

Immediate Care (24- 72 hours) All monitoring and medications continued. Flushing of arterial lines are done at regular intervals with heparin flush as well as whenever art

Anti-diuretic hormone, who discovered it? and what is it''s physiologic fun...

who discovered it? and what is it''s physiologic functions?

Malignant catarrhal fever (mcf), Malignant catarrhal fever (MCF) Malig...

Malignant catarrhal fever (MCF) Malignant catarrhal fever is invariably fatal generalized lymphoproliferative disease of cattle and sometimes of wild ruminants. It is common i

Abandonment of the ammoniotelic excretion, Q Why after the passage of anima...

Q Why after the passage of animals from the aquatic to the terrestrial habitat does the abandonment of the ammoniotelic excretion occur? Ammonia is a highly toxic molecule if n

Diseases of poultry, DISEASES OF POULTRY - Poultry birds suffer from a ...

DISEASES OF POULTRY - Poultry birds suffer from a variety of diseases - Nutritional - Rickets Viral - Ranikhet Bact -

Responses of plants to stress, Responses of Plants to Stress You know ...

Responses of Plants to Stress You know that certain plant species can grow in severe environmental extremes. For example, plants grow below 0°C in the Himalayas and above 45°C

Total fertility rate, Total Fertility Rate Total fertility rate (TFR) ...

Total Fertility Rate Total fertility rate (TFR) is the total number of children a women can be expected to bear in a given population if birth rates are constant for at least

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages