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.

Explain the methodology for seliwanoff test, Explain the Methodology for se...

Explain the Methodology for seliwanoff test? Take 5 ml of seliwanoff's reagent in a test tube. Add 5-6 drops of the glucose solution and heat the mixture to boiling for about 3

Name the implant failures, Implant failures On the basis of the stage w...

Implant failures On the basis of the stage when problems occurs implant failures can be classified as : i) Before Abutment Connection. ii) During Abutment Connection.

Define the parathyroid gland cells, Which of the following serves as a sens...

Which of the following serves as a sensor, or as part of a sensor, that functions in a negative feedback system? A. CaSRs (Calcium-Sensing Receptors) located in the plasma memb

Why are heterotrophic not classified as plants or animals, Why are heterotr...

Why are heterotrophic, autotrophic , and mixotrophic protists not classified as plants or animals ?

Cell coat, what is the job of the cell coat?

what is the job of the cell coat?

Blood, how to know what type of blood are?

how to know what type of blood are?

Distinguish among the terms stimulus and sensation, Q. Distinguish among th...

Q. Distinguish among the terms stimulus, sensation, and perception? A stimulus is an energy source (chemical, light wave, pressure etc.) which activates a receptor cell (specia

Mixed tricuspid stenosis and regurgitation , Mixed Tricuspid Stenosis and R...

Mixed Tricuspid Stenosis and Regurgitation: Rheumatic involvement of the tricuspid valve is often seen in association with involvement of mitral and rarely aortic valve. Isolated

Fertilisation, Explain how the uterus supports the development of a baby du...

Explain how the uterus supports the development of a baby during gestation

Aipmt exam, Which book is best for quallifying in aipmt exam and what shoul...

Which book is best for quallifying in aipmt exam and what should be my minimum studying hours???

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages