Watch both animations to see how the human body works to maintain homeostasis when fluctuations in calcium concentrations occur in the blood (such as from changes in diet, vitamin D deficiencies, or use of certain medications). Use the animations to identify the major components of this homeostatic control system.

Choose the right fill in the blank answer between the parentheses 

According to the animation, a change in the internal environment is detected by (calcium-sensing cells, the kidney, or the brain) , which will inform the (intestines, kidney and bones, or thyroid gland) .

Depending on the information gathered by the sensors, however, the control center will either send instructions to activate the kidney and bones to (decrease or increase) calcium concentrations in the bloodstream or send instructions to activate the kidney, the intestine, and bones to (decrease or increase) calcium concentrations in the bloodstream.

Ultimately, the effector(s) feed(s) back to influence the change in blood calcium concentrations to return this variable to homeostasis. Because this response (amplifies or counteracts)  the original stimulus, this homeostatic control system can be described as which of the following?

Negative feedback loopPositive feedback loop

Transcribed Image Text:

Information sent Calcitonin released Imbalance STIMULUS: Rising blood Ca2+ level Imbalance Information sent Calcitonin released Imbalance STIMULUS: Rising blood Ca2+ level Imbalance

Answer rating: 100% (QA)

According to the animation a change in the internal environment is detecte... View the full answer