Log inSign up

MCAT Biological and Biochemical Foundations of Living Systems Flashcards: 3b Skeletal System Mineral Homeostasis

Study 3b Skeletal System Mineral Homeostasis in MCAT Biological and Biochemical Foundations of Living Systems with focused flashcards that help you recognize the idea, recall the key rule, and apply it in practice-style prompts.

QUESTION

Which option best describes the net effect of PTH on serum Ca2+\text{Ca}^{2+}?

Tap card or press Space to flip

ANSWER

Increases serum Ca2+\text{Ca}^{2+}. PTH elevates blood calcium by promoting bone resorption, renal reabsorption, and vitamin D activation.

1 / 25

MCAT Biological and Biochemical Foundations of Living Systems: Foundational Concept 3: Organ Systems and Homeostasis

You are hereSkeletal System Structure, Mineral Homeostasis (3B)25 cards

All flashcards

25 cards

What this deck covers

This deck focuses on 3b Skeletal System Mineral Homeostasis, giving you a quick way to review the definitions, rules, and examples that matter most for MCAT Biological and Biochemical Foundations of Living Systems.

How to use these flashcards

Work through these flashcards in short sessions. Try to answer each prompt before flipping the card, then revisit any cards you miss until the explanation feels automatic.

Practice questions

1 of 34Practice questions for this set
During fasting, a volunteer's plasma Ca2+ drifts slightly below baseline. The skeleton can restore plasma Ca2+ by increasing osteoclast-mediated bone resorption (releasing Ca2+ and phosphate), while osteoblasts deposit mineral during formation. PTH increases in response to low Ca2+, shifting remodeling toward resorption; calcitonin has the opposite effect. Which change would most directly help restore plasma Ca2+ in this setting?
Choose an answer

Keep your progress across every deck

Free account · cards you mark are saved to it