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Critical Thinking........
Question 1:
John has been having pain whenever he takes a breath. His doctor told him he has pleurisy.
A.) what membrane is involved?
B.) what is the membrane's usual role?
C.) why is this so painful for John?
A.) membranes involved are the parietal and visceral pleura
B.) their usual role of the parietal pleura membrane is to line the walls of the thoracic cavity while the visceral pleura covers the lungs
C.) without the assistance from these membranes, organs stick together and drag across each other which is painful
Question 4:
When we become dehydrated, we get thirsty which causes us to drink water. Is thirst control part of the negative or positive feedback mechanism?
Thirst control is controlled by the negative feedback mechanism because when our body is thirsty, it is lacking water/ deficient in it. Therefore,in order for our body to reach the optimum level of water once again, we need to drink. By drinking fluids we return our body back to our optimum level, thus it is a negative feedback mechanism.
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