Cardiovascular System

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Presentation transcript:

Acute responses to exercise for the respiratory and cardiovascular systems

Cardiovascular System Anticipatory Rise Prior to exercise ADRENALINE causes the heart to beat faster to prepare the body ©Subject Support 2010.

Heart Rate Increases during exercise to increase blood flow More Oxygen to working muscles ©Subject Support 2010.

Increased Blood Pressure More blood is circulated Arteries resist blood flow = Increased pressure Systolic Blood Pressure Increases during exercise ©Subject Support 2010.

Vasoconstriction/Dilation Vasodilation = Increase in diameter of blood vessels Increased flow to muscles Vasoconstriction = Decreased diameter Less blood flow to less needy areas ©Subject Support 2010.

Respiratory Responses Breathing Rate Increased Breathe more frequently and deeper Bring more oxygen in Rid of waste products ©Subject Support 2010.

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 ©Subject Support 2010.

Increased Tidal Volume More air passes through to the lungs More oxygen and carbon dioxide exchanged ©Subject Support 2010.

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