Multiple Choice
Which part of the heart's electrical conduction system is responsible for initiating the heartbeat?
134
views
18. The Heart
Cardiac Action Potentials
Struggling with Anatomy & Physiology?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
How do you calculate cardiac output?
A
Cardiac output is calculated by dividing stroke volume by heart rate.
B
Cardiac output is calculated by adding heart rate and stroke volume.
C
Cardiac output is calculated by subtracting stroke volume from heart rate.
D
Cardiac output is calculated by multiplying heart rate by stroke volume.
Verified step by step guidance1
Understand the concept of cardiac output: Cardiac output is the volume of blood the heart pumps per minute. It is a crucial measure of heart function and overall cardiovascular health.
Identify the components needed for the calculation: Cardiac output is determined by two main factors - heart rate (HR) and stroke volume (SV).
Define heart rate: Heart rate is the number of times the heart beats per minute. It is usually measured in beats per minute (bpm).
Define stroke volume: Stroke volume is the amount of blood pumped by the left ventricle of the heart in one contraction. It is typically measured in milliliters (mL) per beat.
Calculate cardiac output using the formula: Cardiac Output (CO) = Heart Rate (HR) × Stroke Volume (SV). Use MathML to represent this formula: .
7:18mWatch next
Master Introduction to Action Potential in Cardiac Cells with a bite sized video explanation from Bruce Bryan
Start learningRelated Videos
Related Practice
Cardiac Action Potentials practice set
Problem sets built by lead tutorsExpert video explanations