ENDOCRINE ORGANS AND RESPIRATORY SYSTEM
ENDOCRINE ORGANS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
The pituitary gland releases calcium ions when blood calcium levels fall below the set point.
|
|
|
Calcitonin, released by the parathyroid gland, stimulates the deposition of calcium from bones into the blood stream when blood calcium levels are high.
|
|
|
Thyroxine, secreted by the thyroid gland, stimulates the release of calcium from the parathyroid gland when blood calcium levels fall below the set point.
|
|
|
Parathyroid glands release PTH which stimulates the release of calcium from bones when the blood calcium levels are lower than the set point.
|
Detailed explanation-1: -Another example of negative feedback is the regulation of the blood calcium level. The parathyroid glands secrete parathyroid hormone, which regulates the level of calcium in the blood. If calcium decreases, the parathyroid glands sense the decrease and secrete more parathyroid hormone.
Detailed explanation-2: -Calcium is a mineral most often associated with healthy bones and teeth, although it also plays an important role in blood clotting, helping muscles to contract, and regulating normal heart rhythms and nerve functions.
Detailed explanation-3: -Blood calcium levels are regulated by parathyroid hormone (PTH), which is produced by the parathyroid glands. PTH is released in response to low blood calcium levels. It increases calcium levels by targeting the skeleton, the kidneys, and the intestine.
Detailed explanation-4: -Parathyroid hormone regulates calcium levels in the blood, largely by increasing the levels when they are too low. It does this through its actions on the kidneys, bones and intestine: Bones – parathyroid hormone stimulates the release of calcium from large calcium stores in the bones into the bloodstream.