💓 Physiology — Advanced#

Scope — Quantitative and systems-level physiology, control theory, and adaptive responses across scales.

Key concepts#

• Systems physiology — modeling interactions among multiple organ systems.
• Control theory — set points, gain, stability, and oscillations in physiological regulation.
• Adaptation and plasticity — short- and long-term physiological adjustments to stress, environment, and disease.

Seed Q&A triads#

• Q: What determines the stability of a physiological control system?
  A: Feedback gain, time delays, and nonlinear responses influence whether regulation is stable, oscillatory, or unstable.

• Q: How does exercise training alter physiological set points?
  A: Repeated stress induces adaptations such as increased cardiac output, mitochondrial density, and altered hormonal responses.

• Q: Why is systems-level modeling important in physiology?
  A: It captures emergent behavior that cannot be predicted by studying isolated components alone.

Contributor prompts and extensions#

• Add a quantitative example modeling blood pressure regulation using feedback loops.
• Include a short discussion of physiological tradeoffs and constraints (e.g., oxygen delivery vs metabolic cost).
• Connect physiological adaptation to evolutionary and developmental perspectives.

Advanced exercises#

• Analyze how delayed feedback can produce oscillations in hormone levels or neural rhythms.