300898 Lecture Notes - Lecture 7: Appendicular Skeleton, Hydrostatic Skeleton, Corpus Cavernosum Penis
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Also, hydrostatic nature is common in marine life such as jelly. Earthworms have rings of muscles that are lled with uid, making their entire body hydrostatic. A sea anemone has a hydrostatic head, with arms radiating out around the mouth. This structure is helpful in feeding and locomotion. An example of a simple vertebrate containing a hydrostatic skeleton would be enternopeusuta, with the common name of acorn worm. This organism is classi ed as a hemichordate, and they are marine worms that use their hydrostatic skeleton to tunnel and anchor themselves into the ground. This can be used for locomotion, but also can aid in the defense of the organism against outside forces as the worm can try to hide itself within the ocean oor. The function of the mammalian penis relies on the use of a hydrostatic skeleton and is known as a hydrostatic organ. The hydrostatic uid, which in this case is blood,
