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.

How many cc of basaljel in the medicine cup, The doctor ordered 3 teaspoons...

The doctor ordered 3 teaspoons of Basaljel suspension in water or juice. How many cc of Basaljel (aluminum carbonate) should the nurse place in the medicine cup?

How do arthropods grow, Q. How do arthropods grow? Due to the presence ...

Q. How do arthropods grow? Due to the presence of exoskeleton the growth of an arthropod is periodical during the growth period the animal loses the exoskeleton, develops and g

Cladogram help, Recent molecular analyses indicate that the artiodactyls, w...

Recent molecular analyses indicate that the artiodactyls, which include hippos and camels, are paraphyletic, whereas cetaceans are monophyletic and cetaceans and hippos form a clad

Explain about the pasteurization, Explain about the Pasteurization? You...

Explain about the Pasteurization? You must be aware of the various pasteurized products available in the market. The most commonly used product being ‘milk'. Why do we need to

Different types of respiratory, how animals respiratory

how animals respiratory

Explain japanese encephalitis, Japanese encephalitis Japanese encephal...

Japanese encephalitis Japanese encephalitis is an uncommon but potentially fatal mosquito-borne viral disease that occurs in rural Asia, especially near pig farms and rice pad

What is the aim of milling, What is the aim of milling The aim of milli...

What is the aim of milling The aim of milling (the process including crushing and grinding) is to obtain preferentially a flour, in which the constituents of the endosperm cell

What is the chemical equation of photosynthesis, What is the chemical equat...

What is the chemical equation of photosynthesis? The chemical equation of photosynthesis is the following: 6 CO 2 + 6 H 2 O + light --> C 6 H 12 O 6 + 6 O 2

Ornithophily - cross-pollination, Ornithophily - Cross-pollination In ...

Ornithophily - Cross-pollination In tropical areas, the birds dominate over insects as important pollinators. The most common among them are humming-birds, sun-birds and honey

Heat energy is liberated during respiration, Some amount of energy is gener...

Some amount of energy is generatred from the oxidation of food materials is released as heat. This can be proved by germinating seeds. Aim: To show that heat is liberated during re

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages