THE CARDIAC CYCLE

What are my objectives while studying this topic?


The heart is the central organ within the circulatory system. You will study the structure of the heart and the specialized cells that make up the tissues forming the heart. This will help you understand the function of the heart within the cardiac cycle. You will also study the composition of the blood and how its content is maintained in the circulatory system.


Why is this important?


Fitness and healthcare professionals measure and monitor heart function and the control of the blood flowing to and from the rest of the body by taking physiological measurements. These measurements assist professionals improve the well being and performance of an individual’s circulatory system as well as diagnosing cardiovascular diseases.


Can I get an introduction to this topic?


Yes, why not have a look at the following links:


Heart facts



Useful questions to ask:


1. How is the blood transported around the body?


2. What are the differences between arteries and veins?


3. How does the exchange of oxygen and nutrients take place between the capillaries and the cells of the body?


What will I be expected to be able to do after studying this topic?


You’ll be expected to:


  • Know the main events of the cardiac cycle

  • Interpret and explain diagrams and graphical representations of the cardiac cycle


Help


Take a look at the following links to get some help:




What are the key words to learn and use for this topic?


  • Myogenic

  • Systolic pressure

  • Diastolic pressure


How long will this topic take to study?


On average you’ll be looking at about three hours of taught time and independent study.


What are the main activities on this topic?


Activity


Take a look at the following links:


Visual learning through the use of the cardiac cycle animations



Interactive sequences of heart diagrams



Animations that can be run in steps to aid discussion




Activity


Take a look at the following link; you can get some good notes for revision of theory.



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