MICROANATOMY

Detailed explanation-1: -If calcium decreases, the parathyroid glands sense the decrease and secrete more parathyroid hormone. The parathyroid hormone stimulates calcium release from the bones and increases the calcium uptake into the bloodstream from the collecting tubules in the kidneys.

Detailed explanation-2: -If the calcium in your blood decreases below homeostasis levels, a gland in the brain will sense the decrease and send a chemical message to your bones. Your bones will release calcium into the blood, bringing blood calcium levels back up.

Detailed explanation-3: -What is an example of positive feedback in homeostasis? Let’s take a look at some of the examples: clot formation, childbirth, fruit ripening, and menstrual cycle. Each one depicts what a positive feedback mechanism is like: Clotting factors are released to seal a wound.

Detailed explanation-4: -Answer and Explanation: The correct answer: The one option that is true for positive feedback systems is a. They operate in such a way that the initial stimulus is enhanced and increased.

Detailed explanation-5: -A negative feedback mechanism, often known as negative feedback homeostasis, is a pathway that is triggered by a deviation in output and produces changes in output in the opposite direction of the initial deviation.