Homeostasis : The Act Of Mechanisms

1172 Words Oct 7th, 2014 5 Pages
Homeostasis
P5:
Homeostasis is the act of mechanisms in the body to keep our body at a constant level.Homostasis can take part in many ways such as regulation of salt, osmoregulation, oxygen and carbon dioxide and many more. Receptor cells allows the control center (usually the brain) to detect a change .The process in the body is affected by homeostasis.

This diagram shows the negative feedback loop.

An example of homeostasis is thermoregulation .This is when the internal environment of our bodies are kept at a constant temperature of 37 degrees .If the enzymes are too low/high they will denature and may stop working. There is a process that happens to allow this demonstrated in the diagram below

When the internal temperature of the body rises, vasodilatation will take place which is the dilation of blood vessels as this happens hair will lay down so more heat is transferred to the outer environment ,More sweat will be produced to help the body cool down as the heat will be lost and then the body temperature should fall back to 37 degrees .Then vasoconstriction will happen which is when the body’s internal environment drops below 37 degrees , this will allow blood vessels to narrow so less heat is lost to the environment , hair muscles will erect so heat will be trapped ,shivering of the body will also occur and eventually the body should rise back o 37 degrees
M4:

Negative feedback helps to restore the internal environment of our bodies back to normal level…
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