Please help Me with these two questions. 1.)explain how a negative feedback loop
ID: 144140 • Letter: P
Question
Please help Me with these two questions.1.)explain how a negative feedback loop is used to lower a persons blood calcium level when it rises above the normal range. Include the description of what the stimulus receptor control center effector and homeostatic range.
2.) the condition hypothyroidism is characterized by a decrease in the synthesis and secretion of the chemical thyroid hormone from the thyroid gland. Explain how this condition involves all the levels of organization in the body
Please help Me with these two questions.
1.)explain how a negative feedback loop is used to lower a persons blood calcium level when it rises above the normal range. Include the description of what the stimulus receptor control center effector and homeostatic range.
2.) the condition hypothyroidism is characterized by a decrease in the synthesis and secretion of the chemical thyroid hormone from the thyroid gland. Explain how this condition involves all the levels of organization in the body
Please help Me with these two questions.
1.)explain how a negative feedback loop is used to lower a persons blood calcium level when it rises above the normal range. Include the description of what the stimulus receptor control center effector and homeostatic range.
2.) the condition hypothyroidism is characterized by a decrease in the synthesis and secretion of the chemical thyroid hormone from the thyroid gland. Explain how this condition involves all the levels of organization in the body
Explanation / Answer
1) IN THE NEGATIVE FEEDBACK MECHANISM, WHEN THE BLOOD CALCIUM LEVEL INCREASE ,THE PARATHYROID GLANDS REDUCE PARATHYROID HORMONE PRODUCTION.
MECHANISM
THE CELLF OF THE PARATHYROID GLAND HAVE A RECEPTOR ON THEIR SURFACE FOR BINDINS Ca2+.THIS CALCIUM SENSING RECEPTOR CONNECTS TO INTRACELLULAR PATHWAYS REGULATHING SYNTHESIS OF PARATHYROID HORMONE. WHEN INTERSTITIAL FLUID CALCIUM LEVEL INCREASES DUE TO BORN RESORPTION AND INCREASED UPTAKE FROM INTESTINE ,CALCIUM SENSING RECEPTOR SLOWS PTH SYNTHESIS AND RELEASE.PARATHYROID HORMONE LEVEL FALLS TO BASA LEVEL IN BLOOD.