PATHOLOGY

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: -Positive Feedback Loops If we look at a system in homeostasis, a positive feedback loop moves a system further away from the target of equilibrium. It does this by amplifying the effects of a product or event and occurs when something needs to happen quickly.

Detailed explanation-4: -The parathyroid glands sense the amount of calcium in the blood and produce increased amounts of parathyroid hormone if the calcium level drops. This hormone helps to reduce the loss of calcium in the urine and releases some calcium from the bones.

Detailed explanation-5: -Homeostasis typically involves negative feedback loops that counteract changes of various properties from their target values, known as set points. In contrast to negative feedback loops, positive feedback loops amplify their initiating stimuli, in other words, they move the system away from its starting state.