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== Anatomy == | == Anatomy == | ||
There are several parts that make up a barnacle. The outermost layer of a barnacle is its shell. The shell of the adult barnacle is usually composed of four to eight Calcereous plates which can form different shapes depending on the species of barnacle.[http://www.mesa.edu.au/friends/seashores/barnacles.html] This hole is also covered by two calcereous plates which can pull back to reveal the inside of the barnacle.[http://museumvictoria.com.au/crust/barnbiol.html] These plates will grow and expand by adding more material to itself. | [[File:Barnacle_anatomy.jpg|left|225px]]There are several parts that make up a barnacle. The outermost layer of a barnacle is its shell. The shell of the adult barnacle is usually composed of four to eight Calcereous plates which can form different shapes depending on the species of barnacle.[http://www.mesa.edu.au/friends/seashores/barnacles.html] This hole is also covered by two calcereous plates which can pull back to reveal the inside of the barnacle.[http://museumvictoria.com.au/crust/barnbiol.html] These plates will grow and expand by adding more material to itself. | ||
[http://en.wikipedia.org/wiki/Barnacle] | [http://en.wikipedia.org/wiki/Barnacle] | ||
These plates are operated by several sets of muscles. The scutal depressor muscles, the scutal abductor muscle, and the tergal depressor muscle are used to open and close the two plates that cover the opening to the barnacle.[http://webs.lander.edu/rsfox/invertebrates/balanus.html] | These plates are operated by several sets of muscles. The scutal depressor muscles, the scutal abductor muscle, and the tergal depressor muscle are used to open and close the two plates that cover the opening to the barnacle.[http://webs.lander.edu/rsfox/invertebrates/balanus.html] |
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