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Attempts 127

Which organ system is primarily responsible for storing minerals?

  1. A
    The skeletal system
  2. B
    The endocrine system
  3. C
    The lymphatic system
  4. D
    The cardiovascular system

Topic Flashcards

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Question

Which organ system acts as the primary storage site for minerals like calcium and phosphorus?

Answer

Skeletal system — bones store ~99% of calcium and ~85% of phosphorus; they release minerals into blood when needed.

Question

Why are bones considered the main mineral reservoir in the body?

Answer

Bone matrix contains hydroxyapatite (calcium phosphate crystals); this reservoir supports blood mineral homeostasis via osteoclastic/osteoblastic activity.

Question

What mineral makes up the majority of bone tissue and is stored in the skeletal system?

Answer

Calcium — ~99% of total body calcium is stored in bones; released by parathyroid hormone when blood levels drop.

Question

How does the skeletal system help regulate blood calcium levels?

Answer

Bones store and release calcium — osteoclasts break down bone to release Ca²⁺ into blood; osteoblasts deposit it back when levels are high.

Question

Does the endocrine system store minerals or regulate their levels?

Answer

Regulates:- hormones like parathyroid hormone (PTH), calcitonin, and vitamin D control bone mineral release/absorption, but storage occurs in bones.

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Is the endocrine system responsible for storing large amounts of minerals?
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