The relationship between heart rate, stroke volume and cardiac output
Lesson details
Learning outcome
I can explain the relationship between heart rate, stroke volume and cardiac output.
Key learning points
- Heart rate is the number of times the heart beats per minute (bpm).
- Stroke volume is the volume of blood pumped by the heart with each beat (measured in millilitres, mL).
- Cardiac Output is the volume of blood pumped by the heart per minute (measured in litres per minute, L/min).
- Cardiac output (Q) is calculated by multiplying the heart rate (HR) by the stroke volume (SV).
- A heart rate graph shows exercise intensity over a period of time.
Keywords
Heart rate - the number of times the heart beats per minute (bpm)
Stroke volume - the volume of blood pumped out of the heart by each ventricle with each beat (measured in millilitres, ml)
Cardiac output - the volume of blood pumped per minute by each ventricle of the heart (measured in litres per minute, l/min). Calculated as heart rate x stroke volume
Common misconception
Pupils often draw heart rate down to zero on a line graph.
Even at rest your heart is still beating, on average 72 beats per minute, to ensure blood is always circulating around the body to keep you alive.
Teacher tip
Teach the formula for Q = HR X SV, do some example calculations and make the connection to respiratory volumes to link with that lesson when appropriate.
Equipment
Graph paper
Licence
Lesson video
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Prior knowledge starter quiz
6 Questions
Q1.What is the sequence of events that make up the heartbeat called?
Q2.Why does the heart make a ba-dum sound?
Q3.The contraction phase of the heartbeat is known as ...
Q4.The relaxation phase of the heartbeat is known as ...
Q5.Match the following key terms and descriptions.
the sequence of events in a heartbeat (contraction and relaxation)
the contraction phase of the heartbeat
the relaxation phase of the heartbeat
the force exerted by the blood on blood vessel walls
a specialised type of involuntary muscle found in the heart
Q6.Match the following key terms with the function.
the contraction phase to pump blood out of the heart
the relaxation phase for the heart to fill with blood
the muscular wall dividing the left and right sides of the heart
the top chambers of the heart
the bottom chambers of the heart
Assessment exit quiz
6 Questions
Q1.When we start to exercise our heart increases.
Q2.Which of the following is a representation of the strength of cardiac contraction?
Q3.Which of the following is an average value for heart rate at rest?
Q4.The resting heart rate of a well trained individual is typically than an untrained individual.
Q5.Match the following key terms and descriptions.
the number of times the heart beats per minute
the amount of blood pumped by the heart with each beat
the volume of blood pumped out of the heart per minute
the force exerted by the blood on the blood vessel walls
Q6.Match the following changes in response to exercise with the correct reasoning.
heart rate response to steady state exercise
stroke volume response to exercise for untrained person
stroke volume response to exercise for a trained person
cardiac output response to exercise for untrained person
cardiac output response to exercise for trained person
To help you plan your 10 physical education lesson on: The relationship between heart rate, stroke volume and cardiac output, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your 10 physical education lesson on: The relationship between heart rate, stroke volume and cardiac output, download all teaching resources for free and adapt to suit your pupils' needs.
The starter quiz will activate and check your pupils' prior knowledge, with versions available both with and without answers in PDF format.
We use learning cycles to break down learning into key concepts or ideas linked to the learning outcome. Each learning cycle features explanations with checks for understanding and practice tasks with feedback. All of this is found in our slide decks, ready for you to download and edit. The practice tasks are also available as printable worksheets and some lessons have additional materials with extra material you might need for teaching the lesson.
The assessment exit quiz will test your pupils' understanding of the key learning points.
Our video is a tool for planning, showing how other teachers might teach the lesson, offering helpful tips, modelled explanations and inspiration for your own delivery in the classroom. Plus, you can set it as homework or revision for pupils and keep their learning on track by sharing an online pupil version of this lesson.
Explore more key stage 4 physical education lessons from the Anatomy and physiology: the cardio-respiratory system unit, dive into the full secondary physical education curriculum, or learn more about lesson planning.