313
edits
Barnacle: Difference between revisions
From CreationWiki, the encyclopedia of creation science
Jump to navigationJump to search
no edit summary
No edit summary |
No edit summary |
||
| Line 36: | Line 36: | ||
Immediately inside the Barnacle are six legs that are used for three purposes. These legs or cirri are usually formed in a feather like shape and have tiny sensory hairs called setae that cover the cirri.[http://invertebrates.si.edu/crustaceans.htm] These legs are used for filter feeding, are the main source of response, and they are used for respiration in class cirripedia.[http://www.waterencyclopedia.com/Ce-Cr/Crustaceans.html] When used for feeding the legs are extended into the water by the barnacle in order to catch whatever food it can. The legs are then retracted and whatever particles the legs have caught are brought to the mouth..[http://invertebrates.si.edu/crustaceans.htm] They are also used as the sensory organs of the Barnacle. The tiny sensory hairs on the cirri detect danger and water level in order to tell the creature whether to open or close the two calcereous plates at the top [http://www.cb1.com/~john/research/barnacle.html] | Immediately inside the Barnacle are six legs that are used for three purposes. These legs or cirri are usually formed in a feather like shape and have tiny sensory hairs called setae that cover the cirri.[http://invertebrates.si.edu/crustaceans.htm] These legs are used for filter feeding, are the main source of response, and they are used for respiration in class cirripedia.[http://www.waterencyclopedia.com/Ce-Cr/Crustaceans.html] When used for feeding the legs are extended into the water by the barnacle in order to catch whatever food it can. The legs are then retracted and whatever particles the legs have caught are brought to the mouth..[http://invertebrates.si.edu/crustaceans.htm] They are also used as the sensory organs of the Barnacle. The tiny sensory hairs on the cirri detect danger and water level in order to tell the creature whether to open or close the two calcereous plates at the top [http://www.cb1.com/~john/research/barnacle.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] | |||
The digestive system is composed of a mouth, an esophagus , the stomach, a small intestine and the anus. The process looks something like this: After the Barnacle's cirri feed the food to the mouth it goes down a short esophagus. After flowing through the esophagus it ends up in the stomach, where it is stored for some time. It then goes down the small intestine where the nutrition is absorbed. After the nutrition is absorbed the waste is then excreted out the anus, which is then filtered back out into the ocean.[http://webs.lander.edu/rsfox/invertebrates/balanus.html] | |||
barnacles also have two antennules that secrete a cement-like glue that they use to attach themselves to rocks, boats ,and many other surfaces. The glue is secreted by cement glands located inside of the barnacle.[http://museumvictoria.com.au/discoverycentre/infosheets/how-do-barnacles-cement-themselves-to-rocks/] | barnacles also have two antennules that secrete a cement-like glue that they use to attach themselves to rocks, boats ,and many other surfaces. The glue is secreted by cement glands located inside of the barnacle.[http://museumvictoria.com.au/discoverycentre/infosheets/how-do-barnacles-cement-themselves-to-rocks/] | ||
