HOMEOSTASIS EXAMPLES.

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Presentation transcript:

HOMEOSTASIS EXAMPLES

BODY TEMPERATURE as an example of HOMEOSTASIS Cold air is blowing in the classroom and your body temperature drops quickly, the cold air is the stimulus Receptors in the skin sense the decreased body temperature (these receptors are called thermoreceptors because they are temperature-sensitive) and they… Send nerve impulses called input to the brain… The brain acts as a control center which evaluates the input and sends… Output in the form of nerve impulses to your skeletal muscles… Your skeletal muscles are the effectors which cause you to shiver which generates heat as your muscles contract and… Reverses the original stimulus and brings your body temperature back to normal to maintain HOMEOSTASIS!

BLOOD PRESSURE as an example of HOMEOSTASIS Some stimulus disrupts homeostasis and your blood pressure changes (increases or decreases) Receptors in the blood vessels sense the altered blood pressure (these receptors are called baroreceptors because they are pressure-sensitive) and they… Send nerve impulses called input to the brain… The brain acts as a control center which evaluates the input and sends… Output in the form of nerve impulses to your heart and blood vessels… Your heart and blood vessels are the effectors which cause a change in your heart rate and blood vessels which… Reverses the original stimulus and brings your blood pressure back to normal to maintain HOMEOSTASIS!