IB Biology SL C3.1.14 Heart Rate Feedback Control Questions

Explore how baroreceptors and chemoreceptors signal the medulla, which adjusts sympathetic and parasympathetic input to the sinoatrial node during changing demand in IB Biology…

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Explain how medulla nerve impulses, the sinoatrial node and myogenic heart tissue adjust heart rate during exercise or changing demand.
Identify the roles of nerves, hormones and pacemaker activity in feedback control of heart rate.

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Study C3.1.14—Heart rate feedback control conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

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The diagram shows a cross section through an artery and a vein.

Figure for Question IB Biology SL C3.1.14 Heart Rate Feedback Control Questions question 1 — IB Biology SL

Outline two ways in which the human body can increase the heart rate during exercise.

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IB Biology SL C3.1.14 Heart Rate Feedback Control Questions question 1