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.

Excitation of heart - circulation, Excitation of Heart - Circulation T...

Excitation of Heart - Circulation The heart has an inherent capacity to contract rhythmically without any external stimulus. Proof of this is obtained when we see that the hea

What is the reduction of stress on the implant, Reduction of stress on the ...

Reduction of stress on the implant - Removal of prosthesis when it is in the non aesthetic areas - Occlusal adjustment - Reducing Cantilever length - Occlusal splint

Define triglycerides, Q. Define Triglycerides? Triglycerides are produc...

Q. Define Triglycerides? Triglycerides are produced by the esterification of glycerol with three fatty acid molecules. They are the body's major energy store, particularly in a

What are gametes, What are gametes? Gametes are cells specialized in s...

What are gametes? Gametes are cells specialized in sexual reproduction. They have half of the maximum number of chromosomes of the species and unite with another gamete giving

Types of mode of nutrition, what is the mode of nutrition of fungi,bacteria...

what is the mode of nutrition of fungi,bacteria and man

Porifera, how to write character of porifera

how to write character of porifera

Photosynthesis., C4 plants have higher net photosynthetic rate because ...

C4 plants have higher net photosynthetic rate because a.they have no photorespiration b.can photosynthesise in low in

Skeleton, biological significance of biology

biological significance of biology

Can be made from set of 20 naturally occurring amino acids, How many differ...

How many different molecules composed of (A) two (B) three, and (C) four amino acids, linked together by peptide bonds, can be made from the set of 20 naturally occurring amino aci

Population, Population was defined by Clarke in 1954. The term populat...

Population was defined by Clarke in 1954. The term population refers to the total number of individuals of a sp. occupying a particular geographic aera at a given time. A s

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages