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.

Centimorgan (cm), Centimorgan (cM) is the unit of measure of a statistical...

Centimorgan (cM) is the unit of measure of a statistical probability recombination frequency between the alleles. One centimorgan is equal to the 1% chance that a marker at one ge

Pituitary, Pituitary The pituitary is also known as hypophysis. It is ...

Pituitary The pituitary is also known as hypophysis. It is composed of two embryologically distinct tissue. The anterior pituitary or adenohypophysis is derived from the roof

Name the enzyme included in the continuous replication, Mention the informa...

Mention the information that the health workers get by measuring BOD of a water Body. a) Name the enzyme included in the continuous replication of DNA strand. Mention the Polar

What is contact plate method - food microbiology, What is Contact Plate Met...

What is Contact Plate Method? Contact Plate (RODAC - Replicate Organism Direct Agar Contact) Method - Contact plates are special petri plates containing suitable agar media wit

Agro industrial-complete feed blocks, Complete feed blocks For manufac...

Complete feed blocks For manufacturing the pellets, processes such as grinding, mixing, steaming and pressing and some times extruding, are applied using special and expensive

Circulation - initiation of cpr, Circulation: If central pulses (femor...

Circulation: If central pulses (femoral in infants and carotid in children) are not palpable, begin chest compression without losing any time. In young infants, encircle

Explain light in cell metabolism, Explain Light in cell Metabolism? Ene...

Explain Light in cell Metabolism? Energy for almost all organisms on earth is derived directly or indirectly from light energy produced by the sun. Sunlight consists of energy

What is vernalisation, What is vernalisation? How is the process of vern...

What is vernalisation? How is the process of vernalisation benefits to plants?

Starr-edward silastic ball valve prosthesis-types of valves, Starr-Edward ...

Starr-Edward (S-E) Silastic Ball Valve Prosthesis : This was introduced in 1961 by Albert Stm and has different models for mitral and aortic positions. It is a cage and b

Seed dispersal, what are the characteristics of the stages in seed dispersa...

what are the characteristics of the stages in seed dispersal

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages