BCH1048 Tutorial 6 - Movement and Locomotion Movement and...

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Unformatted text preview: Movement and Locomotion Movement and Locomotion Skeletons function in support, Skeletons function in support, movement, and protection movement, and protection Hydrostatic skeletons ( Hydrostatic skeletons ( & L ) ) Consists of fluid held under pressure in a closed closed body compartment body compartment . Most animals with hydrostatic skeletons are soft and flexible. E.g. A hydra hydra ( & ) can extend its body and tentacles ( & ) and also expand its body around ingested prey. E.g. An earthworm earthworm ( & ) can burrow through soil because it is flexible and has a hydrostatic skeleton. The hydrostatic skeleton of a hydra in two states. Because water is not compressible, constricting constricting the cavity forces the animal to elongate elongate , somewhat like squeezing a water-filled balloon. Describe the picture soft-shelled crabs After the female crab has shed her outerskeleton (on the left) the male and female crabs "double-up" to mate.....
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This note was uploaded on 04/16/2011 for the course BCH 1048 taught by Professor Prof.cheng during the Fall '08 term at City University of Hong Kong.

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BCH1048 Tutorial 6 - Movement and Locomotion Movement and...

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