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Which of the following is an example of negative feedback?
A. High blood sugar stimulates the pancreas to secrete glucagon
B. Low blood calcium stimulates calcitonin secretion
C. Low body temperature stimulates shivering
D. High blood volume stimulates antidiuretic hormone (ADH) secretion
C. Low body temperature stimulates shivering
Negative feedback mechanism is a physiologic response to detected change that opposes this change and returns the body to a ‘set normal’. When the weather is cold and body temps lower, shivering produces heat and raises the body temp back to its set normal.
High blood sugar stimulates the pancreas to secrete glucagon (hormone that increases blood sugar) *POSITIVE FEEDBACK
High blood sugar stimulates the pancreas to secrete insulin(lowers blood sugar) *NEGATIVE FEEDBACK
Low blood calcium stimulates calcitonin (hormone that lowers blood calcium levels) secretion *POSITIVE FEEDBACK
Low blood calcium stimulates parathyroid hormone (which mobilizes calcium from the bone & raises blood calcium back to norm) secretion *NEGATIVE FEEDBACK
High blood volume stimulates antidiuretic hormone (ADH – increases blood volume) secretion *POSITIVE FEEDBACK
Low blood volume stimulates ADH & ADH conserves fluid to return blood volume back to norm *NEGATIVE FEEDBACK