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hydrostatic skeleton
Definition
A hydrostatic skeleton is a type of skeleton that uses water pressure to maintain its shape. It is found in soft-bodied animals, such as jellyfish and worms.
The hydrostatic skeleton is made up of a fluid-filled cavity surrounded by muscles. When the muscles contract, they squeeze the fluid, which creates pressure. This pressure helps to maintain the shape of the animal's body.
Hydrostatic skeletons are very flexible and can change shape easily. This allows soft-bodied animals to move through tight spaces and change their shape to catch food.
How can the word be used?
The earthworm's hydrostatic skeleton allows it to burrow through the soil.
Different forms of the word
Hydrostatic skeleton: This is the most common spelling.
Hydroskeleton: This is a less common spelling, but it is still correct.
Etymology
The word "hydrostatic skeleton" comes from the Greek words "hydro" (water) and "statikos" (standing still). It was first used in English in the early 20th century to describe a type of skeleton that is supported by fluid pressure.
Question
What is a hydrostatic skeleton?