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.

Skeleton, what is the biological significance of skeleton

what is the biological significance of skeleton

Define viscosity - property of agar, Viscosity The viscosity at tempera...

Viscosity The viscosity at temperatures above its gelation point is relatively constant at pH values of 4.5 to 9.0 and is not greatly affected by age or ionic strength within

Determine about the klove grooved pegboard test, Determine about the Klove ...

Determine about the Klove Grooved Pegboard Test The subject must place pegs shaped like keys into a board having recesses that are oriented in randomly varying directions. The

Define transport proteins in plasma, Define Transport Proteins in Plasma? ...

Define Transport Proteins in Plasma? Transport proteins, embedded in lipid membranes, make easy the import of nutrients into cells or the release of toxic products into the sur

Passage of pollen tube, Passage of Pollen Tube In cotton, the pollen p...

Passage of Pollen Tube In cotton, the pollen produces a tube within an hour which grows on the surface of the stigmatic hairs, and then between the cells of the stigma at the

What is cytokinesis in cell reproduction, what is Cytokinesis in cell repro...

what is Cytokinesis in cell reproduction? Cytokinesis: Mitosis is usually followed by cytokinesis, the division of the cytoplasm and cell membrane. Cellular organelles are no

Phases of ovarian cycle, Phases of Ovarian Cycle In non-mammalian vert...

Phases of Ovarian Cycle In non-mammalian vertebrates the ovarian cycle consists of the following phase; Pre breeding phase Breeding phase and Post breedin

What are imago and nymph, Q. What are imago and nymph? Nymphs are larva...

Q. What are imago and nymph? Nymphs are larvae of hemimetabolic insects (like grasshoppers). They are very similar to the adult insect although smaller, In holometabolic insect

Individual neurons communicate, A human is better able to ride a bike becau...

A human is better able to ride a bike because individual neurons communicate information faster than modern computer chips. true or false

Kingdom animalia, critera for the animal classification

critera for the animal classification

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages