The coelom (/ˈsiːləm/ SEE-ləm, plural coeloms or coelomata /siːˈloʊmətə/ see-LOH-mə-tə) (Greek koilōma, hollow, cavity) refers to the main body cavity in most multicellular animals and is positioned inside the body to surround and contain the digestive tract and other organs. In developed animals, it is lined with a mesodermal epithelium. In other animals, such as molluscs, it remains undifferentiated.
Coelom formation begins in the gastrula stage. The developing digestive tube of an embryo forms as a blind pouch called the archenteron.
In Protostomes the coelom forms by a process known as schizocoely. The archenteron initially forms, and the mesoderm splits into two layers: the first attaches to the body wall or ectoderm, forming the parietal layer and the second surrounds the endoderm or alimentary canal forming the visceral layer. The space between the parietal layer and the visceral layer is known as the coelom or body cavity.
In Deuterostomes, the coelom forms by enterocoely: mesoderm buds from the walls of the archenteron and hollows to become the coelomic cavities.
A child was born into this world
With great emotion he was loved
The evil seed slept in his body
Spreading it's roots before the glory
The hell was risen when he was twelve
The squeeze of the trigger was a move he did well
So he killed his parents killed his friends
With black spirit he filled himself
Soon he was taken in custody
But the inner seed was so well-rooted
He needed more the evil doer
[Chorus:]
With terminal intensity operation was made
His ties were broken and the doors opened
With terminal intensity and hardened heart
Now walking among us a voice in his head
He has an agenda a secret mission
Taking orders from higher levels
Fighting a battle for you and me
So we can live in our world of dreams
Tottering on the edge of the grave
Facing violence every day
Causes the new set of priorities
Kills with a pleasure every day
And the hindbrain behind will be safe
From the extra people to play his game
Wrapping himself up in mystery
[Chorus:]
With terminal intensity the plan was made
But there is no control in evils way
With terminal intensity all hell´s breaking loose
No-one can control how evil moves
Unestrained anger deep inside
Turns himself against the person of high
But will be killed in the name of law