Regulating Blood Pressure and Cardiac Output
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Objective
I can analyze the regulatory mechanisms of blood pressure and cardiac output.
Part 1 of 4
Warm-up video
CrashCourse · 9:34Vetted channel
We don't generate video — this one is by CrashCourse on YouTube. The practice questions and exit ticket below were drafted by AI for this objective, and every question is editable in the teacher guide.
Part 2 of 4
Key concepts
3 concepts
- 1
Unlike skeletal muscle, cardiac cells are physically and electrically connected, allowing for precise coordination to pump blood.
- 2
Pacemaker cells in the heart generate their own electricity, triggering action potentials and controlling heart rhythm via the intrinsic cardiac conduction system.
- 3
A defibrillator sends electricity through the heart to trigger action potentials in all cells at once, allowing the SA node to reset the rhythm.
Part 3 of 4
Practice
3 questions
Explain how pacemaker cells generate their own action potentials differently from other cells in the body.
What is the role of the AV node in the cardiac conduction system, and why is its function important for proper heart function?
Part 4 of 4
Exit ticket
Quick comprehension check
“Describe how the sinoatrial (SA) node regulates heart rate and blood pressure.”
Sample answer included in the free materials
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