Three linked quantities
Three linked quantities
Heart rate is the number of times the heart beats each minute. It is measured in beats min−1\text{beats min}^{-1}beats min−1, often written as bpm.
Step-by-step lessons on Edexcel GCSE Biology 8.2.4 Cardiac output. Each one builds up to exam-style questions. Start with the foundational topics and build up to the higher-tier material.