THE CARDIOVASCULAR SYSTEM GCSE PE Starter Open your
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THE CARDIOVASCULAR SYSTEM GCSE PE
Starter Open your homework (Heart box diagram)… how accurate is your labelling/blood flow? Homework…. What are the short and long term effects of exercise on the heart…?
Learning Objectives… To identify the purpose of the cardiovascular system To understand the key terms related to the cardiovascular system To apply this knowledge in a practical situation Rate your understanding! Homework…. What are the short and long term effects of exercise on the heart…?
The Cardiovascular System… The cardiovascular system is made up of three main parts… The heart The lungs The blood vessels Homework…. What are the short and long term effects of exercise on the heart…?
The Cardiovascular System… There are two main types of blood vessels… Arteries – carry blood away from the heart Veins – carry blood towards the heart The main purpose of the cardiovascular system is to transport oxygen and nutrients around the body Homework…. What are the short and long term effects of exercise on the heart…?
Double Circuit… Each time a blood cell goes around your body, it goes through the heart twice – once through each side This happens because there are two circuits: • The lung circuit • The body circuit
The heart… Red – oxygenated blood Blue – deoxygenated blood
Label time… You now need to label your diagram of the heart Try to use as much information as possible
Definitions… Heart Rate The number of times your heart beats each minute Stroke Volume Amount of blood each ventricle pumps with each heartbeat Heart Rate (HR) x Stroke Volume (SV) = Cardiac Output (CO)
Blood Pressure… Every time your heart contracts, it forces blood around your body by increasing your blood pressure Blood pressure is the force caused by the blood on the walls of the blood vessels
Blood pressure… When you measure your blood pressure, you get two readings… SYSTOLIC PRESSURE The blood pressure in the arteries when the ventricles contract. This is when your blood pressure is at it’s highest. DIASTOLIC PRESSURE The blood pressure in the arteries when the ventricles relax. This is when your blood
Exam Practice… Complete the exam questions sheet based on what you have learnt today! Homework…. What are the short and long term effects of exercise on the heart…?
Learning Objectives… To identify the purpose of the cardiovascular system To understand the key terms related to the cardiovascular system To apply this knowledge in a practical situation Rate your understanding! Homework…. What are the short and long term effects of exercise on the heart…?