sport p2

assessment activity 2- that's what friends are for
unit 2: the physiology of fitness
p2- describe the cardiovascular and respiratory systems responses to accute exercise








cardiovascular

heart rate anticipatory response: Nerves that supply your heart and the chemicals in your blood can increase your heart rate. usually before you exercise your heart rate usually increases.


activity response:  This is when there is the brain detects cardiovascular activity. this then results in the heart pumping more blood round the body at the same time blood is being put where it is needed

increased blood pressure: this is the pressure of blood against the walls of your arteries. during exercise both cardiac output and blood pressure increases, these act to restrict the blood pressure so it doesnt rise to much then gradually bring it down to normal.

vasodilation and vasoconstriction: the function of vasodilation is to increase blood flow in the body to tissues that need it.
vasoconstriction, this is the narrowing of the blood vessels resulting in contracting the muscular wall of the vessels, this is the opposite of vasodilation.




Respiratory


increase in breathing rate: this is when you exercise and there is a increase and depth of breathing. When you exercise your muscle demands more oxygen, this then cause to make more carbon dioxide which makes for faster and deeper breathing. Neural involves the brain and nervous system, so your brain effects your breathing.

increased tidal volume: tidal volume is the volume of air you breathe in, in a single breathe. when you exercise you cause a volume in tidal increase this is because you require more oxygen. this is measured in different ways depending on what exercise you are doing. tidal volume is needed to meet your body's requirements.