weddle seal

Essay specific features

 

Issue:

Science

 

Written by:

Shanta M

 

Date added:

January 7, 2015

 

Level:

University

 

Grade:

A

 

No of pages / words:

2 / 284

 

Was viewed:

4332 times

 

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Essay content:

The signal for the spleen to empty its cells into the circulation is the hormone epinephrine. The extra blood with its haemoglobin allows a seal about fifteen extra minutes underwater. Furthermore the Weddell seal has a high concentration of an oxygen storing protein called myoglobin in their muscles compared to humans...
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Once the oxygen in the blood has depleted, the oxygen bound to myoglobin begins to come off and enter the cytoplasm of the muscles cells. Myoglobin helps seals deal with the increased amounts of carbon dioxide in its bloodstream. Muscles receive virtually no blood during a dive. After the small amount of oxygen in the muscles is used up, the work of the muscles is based on anaerobic respiration, which leads to the formation of lactic acid in the muscles...
displayed 300 characters

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