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Parathyroid hormone stimulates osteoclasts to break down bone tissue, releasing calcium salts from the extracellular matrix into the blood.
If Level of blood Ca++ too low
Inhibits osteoclast activity, and calcitonin from the thyroid gland stimulates osteoblasts to form bone tissue, storing excess calcium in the extracellular matrix.
If Level of blood Ca++ too high
If blood calcium level is too high the _________ gland releases __________. (control center)
Thyroid , Calcitonin
If the blood calcium level is too low the _________glands releases ________ _______.(control center)
Parathyroid , Parathyroid hormone
After the thyroid releases calcitonin (as a response to a high blood Ca+ level) the _________ deposit _______ in the bones. (Effectors)
Osteoblasts , Calcium
After the parathyroid glands release parathyroid hormone (as a response to a low blood Ca+ level) the ________ break down bone to release _________.
Large, multinucleated cells that break down the calcified matrix.
Mature bone cell. Isolated in lacunae.
Endocrine gland embedded in the posterior part of the thyroid gland.
Hormone secreted by the parathyroid gland to increase blood Ca+ levels.
Thyroid hormone used to lower blood Ca+ levels.
Endorcrine gland that secretes calcitonin to decrease blood Ca+ levels.
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