The BodyThe Body

Structure and FunctionStructure and Function

Oxygen Transport SystemOxygen Transport SystemThe main aim of the Oxygen transport The main aim of the Oxygen transport system is to help a person exercise. The system is to help a person exercise. The oxygen transport system provides the oxygen transport system provides the muscles and the body with oxygenated muscles and the body with oxygenated blood that helps the body to keep working blood that helps the body to keep working efficiently. The harder you train, the efficiently. The harder you train, the harder your oxygen transport system must harder your oxygen transport system must work. However, as a person becomes work. However, as a person becomes fitter, less effort is needed for the same fitter, less effort is needed for the same amount of work.amount of work.

Oxygen Transport System Cont.Oxygen Transport System Cont.The Oxygen transport system is The Oxygen transport system is made up of the made up of the respiratoryrespiratory system system and the and the circulatorycirculatory system. Give a system. Give a definition of each of these systems.definition of each of these systems.

Which activities from your Standard Which activities from your Standard Grade course will make the most Grade course will make the most demands on your oxygen transport demands on your oxygen transport system?system?

Why Exercise?Why Exercise?

Regular exercise increases the size Regular exercise increases the size of the heart allowing more blood to of the heart allowing more blood to be pushed around the body with be pushed around the body with every beat of the heart. every beat of the heart.

-- Will this lower or raise your heart Will this lower or raise your heart beat?beat?

- Now check your resting heart beat.- Now check your resting heart beat.

My resting heart beat is_______bpm.My resting heart beat is_______bpm.

Why Exercise Cont.Why Exercise Cont.

Regular exercise increases the Regular exercise increases the Vital Vital CapacityCapacity of the lungs. This means of the lungs. This means that your lungs can take in more that your lungs can take in more oxygen with each breath you take. oxygen with each breath you take.

- Now check your resting breathing - Now check your resting breathing rate.rate.

- My resting breathing rate is_____ - My resting breathing rate is_____ times per minute.times per minute.

Oxygen DebtOxygen DebtIf the body is performing at a high If the body is performing at a high intensity for long periods of time, it can intensity for long periods of time, it can become difficult for your breathing to become difficult for your breathing to supply enough oxygen to working supply enough oxygen to working muscles. This will cause a build up of muscles. This will cause a build up of lactic lactic acidacid in the muscles, and the body will slow in the muscles, and the body will slow down. This is known as down. This is known as Oxygen DebtOxygen Debt..

Can you think of FOUR activities where Can you think of FOUR activities where Oxygen Debt may be a problem?Oxygen Debt may be a problem?

QuestionsQuestions

Now answer Questions 35, 36 & 37 Now answer Questions 35, 36 & 37 on Page 17 of Leckie and Leckie on Page 17 of Leckie and Leckie Book.Book.