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Questions and Answers
What response is triggered when blood calcium ion level decreases below 8.5 mg/dL?
What response is triggered when blood calcium ion level decreases below 8.5 mg/dL?
- Kidneys absorb calcium ions
- Intestinal absorption of calcium increases
- Thyroid gland secretes calcitonin
- Osteoclasts release stored calcium ions from bone (correct)
In response to low blood calcium levels, what hormone do the parathyroid glands secrete?
In response to low blood calcium levels, what hormone do the parathyroid glands secrete?
- Thyroxine
- Parathyroid hormone (PTH) (correct)
- Insulin
- Calcitonin
What is the effect of high calcium ion levels in the blood?
What is the effect of high calcium ion levels in the blood?
- Intestinal absorption of calcium increases
- Osteoclasts release stored calcium ions from bone
- Kidneys absorb calcium ions
- Thyroid gland secretes calcitonin (correct)
In cases of high blood calcium levels, what is the effect on kidney function?
In cases of high blood calcium levels, what is the effect on kidney function?
Which hormone is secreted by the thyroid gland in response to high blood calcium levels?
Which hormone is secreted by the thyroid gland in response to high blood calcium levels?
What triggers osteoclasts to release stored calcium ions from bone?
What triggers osteoclasts to release stored calcium ions from bone?
What happens to osteoclast activity in response to Calcitonin?
What happens to osteoclast activity in response to Calcitonin?
Which organ decreases the absorption of calcium in response to Calcitonin?
Which organ decreases the absorption of calcium in response to Calcitonin?
What effect does Calcitonin have on the excretion of calcium ions by the kidneys?
What effect does Calcitonin have on the excretion of calcium ions by the kidneys?
What is the major type of fracture characterized by cracks or breaks due to physical stress?
What is the major type of fracture characterized by cracks or breaks due to physical stress?
During fracture repair, which step involves the production of a large blood clot and establishes a fibrous network?
During fracture repair, which step involves the production of a large blood clot and establishes a fibrous network?
What happens to calcium excretion by the kidneys when calcium levels in the blood decrease?
What happens to calcium excretion by the kidneys when calcium levels in the blood decrease?
Which hormone is responsible for increasing blood calcium ion levels by stimulating osteoclast activity, enhancing calcitriol secretion, and decreasing calcium excretion by kidneys?
Which hormone is responsible for increasing blood calcium ion levels by stimulating osteoclast activity, enhancing calcitriol secretion, and decreasing calcium excretion by kidneys?
What condition is characterized by abnormal bone development and is caused by insufficient growth hormone secretion?
What condition is characterized by abnormal bone development and is caused by insufficient growth hormone secretion?
Which hormone decreases blood calcium ion levels by inhibiting osteoclast activity, increasing calcium excretion, and reducing calcitriol secretion by kidneys?
Which hormone decreases blood calcium ion levels by inhibiting osteoclast activity, increasing calcium excretion, and reducing calcitriol secretion by kidneys?
What is the most abundant mineral stored in bones?
What is the most abundant mineral stored in bones?
Which of the following cells secrete calcitonin to help regulate blood calcium ion levels?
Which of the following cells secrete calcitonin to help regulate blood calcium ion levels?
In abnormal bone development, which condition is characterized by excessive growth due to an excess of growth hormone?
In abnormal bone development, which condition is characterized by excessive growth due to an excess of growth hormone?
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