Assessment Criteria P2 – Describe the cardiovascular and respiratory systems response to acute exercise M1 – Explain the response of the cardiovascular.

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Presentation transcript:

Acute responses to exercise for the respiratory and cardiovascular systems

Assessment Criteria P2 – Describe the cardiovascular and respiratory systems response to acute exercise M1 – Explain the response of the cardiovascular and respiratory systems to acute exercise

Cardiovascular System Anticipatory Rise Prior to exercise ADRENALINE causes the heart to beat faster to prepare the body How might this affect an athlete at the start of their performance?

Heart Rate Increases during exercise to increase blood flow More Oxygen to working muscles Why would this benefit an athlete?

Increased Blood Pressure More blood is circulated Arteries resist blood flow = Increased pressure Systolic Blood Pressure Increases during exercise Why do you think this happens?

Vasoconstriction/Dilation Vasodilation = Increase in diameter of blood vessels Increased flow to muscles Vasoconstriction = Decreased diameter Less blood flow to less needy areas

Respiratory Responses Breathing Rate Increased Breathe more frequently and deeper Bring more oxygen in Rid of waste products How does this help an athlete?

Neural and Chemical Control Neural = Stretch receptors in the lungs Send messages to the brain to alter breathing Chemical = Chemoreceptors – Sense changes in O2 + CO2. Baroreceptors monitor movement

Increased Tidal Volume More air passes through to the lungs More oxygen and carbon dioxide exchanged What effect might this have on performance?

Assessment Criteria P2 – Describe the cardiovascular and respiratory systems response to acute exercise M1 – Explain the response of the cardiovascular and respiratory systems to acute exercise

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