Questions: End of Semester Test: Biology with Virtual Labs A Tomas had low levels of calcium in his body. Vitamin D is essential in maintaining a calcium balance. He started taking vitamin D supplements. Because Tomas took high doses of vitamin D, the calcium levels in his body increased. Which endocrine glands will help maintain homeostasis by regulating the increased calcium levels? adrenal gland ovary pancreas isle thyroid parathyroid Reset Next

 End of Semester Test: Biology with Virtual Labs A

Tomas had low levels of calcium in his body. Vitamin D is essential in maintaining a calcium balance. He started taking vitamin D supplements. Because Tomas took high doses of vitamin D, the calcium levels in his body increased. Which endocrine glands will help maintain homeostasis by regulating the increased calcium levels?

adrenal gland
ovary
pancreas
isle
thyroid
parathyroid

Reset Next
Transcript text: End of Semester Test: Biology with Virtual Labs A Tomas had low levels of calcium in his body. Vitamin D is essential in maintaining a calcium balance. He started taking vitamin D supplements. Because Tomas took high doses of vitamin D, the calcium levels in his body increased. Which endocrine glands will help maintain homeostasis by regulating the increased calcium levels? adrenal gland ovary pancreas isle thyroid parathyroid Reset Next
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Solution

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The endocrine glands that help maintain homeostasis by regulating increased calcium levels in the body are the thyroid and parathyroid glands.

  1. Thyroid Gland: The thyroid gland produces calcitonin, a hormone that helps lower blood calcium levels by inhibiting the activity of osteoclasts (cells that break down bone) and promoting the excretion of calcium in the kidneys.

  2. Parathyroid Gland: The parathyroid glands produce parathyroid hormone (PTH), which increases blood calcium levels by stimulating osteoclasts to break down bone and release calcium, increasing calcium reabsorption in the kidneys, and activating vitamin D to increase calcium absorption in the intestines.

Explanation for each option:

  • Adrenal Gland: Incorrect. The adrenal glands primarily produce hormones like cortisol, aldosterone, and adrenaline, which are not directly involved in calcium regulation.

  • Ovary: Incorrect. The ovaries produce sex hormones such as estrogen and progesterone, which do not directly regulate calcium levels.

  • Pancreas: Incorrect. The pancreas produces insulin and glucagon, which regulate blood sugar levels, not calcium.

  • Isle: Incorrect. This seems to be a typographical error or misinterpretation. It might refer to the islets of Langerhans in the pancreas, which are involved in insulin production, not calcium regulation.

  • Thyroid: Correct. The thyroid gland helps regulate calcium levels through the hormone calcitonin.

  • Parathyroid: Correct. The parathyroid glands regulate calcium levels through parathyroid hormone (PTH).

In summary, the thyroid and parathyroid glands are responsible for maintaining calcium homeostasis in the body.

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