Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
e. Parathyroid hormone increases the blood calcium ion concentration by increasing the activity of osteoblasts.

검증된 단계별 안내

Step 1: Understand the role of parathyroid hormone (PTH) in calcium homeostasis. PTH is secreted by the parathyroid glands and plays a critical role in increasing blood calcium ion concentration when levels are low.

Step 2: Analyze the mechanism of PTH action. PTH increases blood calcium levels by stimulating osteoclast activity, not osteoblasts. Osteoclasts break down bone tissue, releasing calcium ions into the bloodstream.

Step 3: Evaluate the statement provided. The statement claims that PTH increases blood calcium ion concentration by increasing osteoblast activity, which is incorrect because osteoblasts are responsible for bone formation and do not release calcium into the blood.

Step 4: Correct the false statement. The corrected statement should read: 'Parathyroid hormone increases the blood calcium ion concentration by increasing the activity of osteoclasts.'

Step 5: Review the corrected statement and ensure it aligns with the physiological role of PTH in calcium regulation.

비슷한 문제에 대한 검증된 영상 답변:

이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.

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주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

Parathyroid Hormone (PTH)

Parathyroid hormone is a peptide hormone produced by the parathyroid glands that plays a crucial role in regulating calcium levels in the blood. It increases blood calcium concentration by stimulating osteoclasts, which break down bone tissue, releasing calcium into the bloodstream. Understanding PTH's function is essential for evaluating its effects on bone metabolism and calcium homeostasis.

Osteoblasts vs. Osteoclasts

Osteoblasts and osteoclasts are two types of bone cells with opposing functions. Osteoblasts are responsible for bone formation, synthesizing new bone matrix, while osteoclasts are involved in bone resorption, breaking down bone tissue. The balance between these two cell types is critical for maintaining healthy bone density and calcium levels in the body.

Calcium Homeostasis

Calcium homeostasis refers to the regulation of calcium levels in the bloodstream, which is vital for various physiological functions, including muscle contraction, nerve transmission, and blood clotting. The body maintains calcium homeostasis through a complex interplay of hormones, including parathyroid hormone and calcitonin, as well as dietary intake and renal excretion.

Mark the following statements as true or false. If a statement is false, correct it to make a true statement.e. Parathyroid hormone increases the blood calcium ion concentration by increasing the activity of osteoblasts.