Blue Crab's Respiratory System: How Blue Crabs Obtain Oxygen
Obtaining oxygen is necessary for any organism to live. Blue crabs need oxygen to breathe. If they could not breathe, they could not survive. The blue crab's circulatory system "pump[s] blood into a hemocoel with the blood diffusing back to the circulatory system between cells. Blood is pumped by a heart into the body cavities, where tissues are surrounded by the blood." This is where oxygen travels in the cells. Because blue crabs are small they are able to let out carbon dioxide across the exterior of their body. Carbon dioxide is produced when the oxygen has finished circulating the body.
Oxygen is dissolved in water when blue crabs breathe it in. They obtain the oxygen through a gas exchange. Diffusion occurs in their gill membranes. On each side of a blue crab there are eight gills.
Along with blue crabs being able to breathe in water with their gills, they can breathe out of the water with their gills. The only way they can do so is by keeping their gills wet. This means that blue crabs when on land must stay near the water or else they won't be able to breathe.
Cellular respiration is the process in which glucose is broken down to produce ATP in the mitochondria. In order to breathe cellular respiration must occur ( C6H12O6+O2→H2O+CO2+ ATP). ATP is especially important because it stores energy. Energy is also required to survive.
[1] http://www2.gsu.edu/~bioasx/closeopen.html
[2] http://animals.about.com/od/crustaceans/p/crustaceans.htm
[3]http://www.scienceclarified.com/Co-Di/Crustaceans.html#b
[4] http://onlinelibrary.wiley.com/doi/10.1002/jcp.1030640114/abstract?systemMessage=Pay+Per+View+will+be+unavailable+for+upto+3+hours+from+06%3A00+EST+March+23rd+on+Wiley+Online+Library.+We+apologise+for+the+inconvenience
[5] http://www.animalquestions.org/invertebrates/crabs/how-do-crabs-breathe/
Oxygen is dissolved in water when blue crabs breathe it in. They obtain the oxygen through a gas exchange. Diffusion occurs in their gill membranes. On each side of a blue crab there are eight gills.
Along with blue crabs being able to breathe in water with their gills, they can breathe out of the water with their gills. The only way they can do so is by keeping their gills wet. This means that blue crabs when on land must stay near the water or else they won't be able to breathe.
Cellular respiration is the process in which glucose is broken down to produce ATP in the mitochondria. In order to breathe cellular respiration must occur ( C6H12O6+O2→H2O+CO2+ ATP). ATP is especially important because it stores energy. Energy is also required to survive.
[1] http://www2.gsu.edu/~bioasx/closeopen.html
[2] http://animals.about.com/od/crustaceans/p/crustaceans.htm
[3]http://www.scienceclarified.com/Co-Di/Crustaceans.html#b
[4] http://onlinelibrary.wiley.com/doi/10.1002/jcp.1030640114/abstract?systemMessage=Pay+Per+View+will+be+unavailable+for+upto+3+hours+from+06%3A00+EST+March+23rd+on+Wiley+Online+Library.+We+apologise+for+the+inconvenience
[5] http://www.animalquestions.org/invertebrates/crabs/how-do-crabs-breathe/
Blue Crab's Digestive System
1) Chelipeds find food and then move the food to the mouth.
2) Inside the mouth there are three jaws. In the first jaw the food is held and is then moved to the second and third where the food is torn into smaller pieces.
4) It moves through the stomach where the food is broken down and then absorbed by the hepatopancreas.
5) The remainder food is either absorbed by the intestines or released through the anus.
{1} http://www.mesa.edu.au/crabs/assets/anatomyC.htm
2) Inside the mouth there are three jaws. In the first jaw the food is held and is then moved to the second and third where the food is torn into smaller pieces.
4) It moves through the stomach where the food is broken down and then absorbed by the hepatopancreas.
5) The remainder food is either absorbed by the intestines or released through the anus.
{1} http://www.mesa.edu.au/crabs/assets/anatomyC.htm