|What are the main components of the circulatory system
|the heart the blood vessels the blood
|Define the term heart rate
|the number of times the heart beats in a minute
|Define the term stroke volume
|the amount of blood leaving the heart each beat
|Define cardiac output
|heart beat x stroke volume the amount of blood pumped by the heart in one minute
|define resting heart rate
|this is the heart rate when the body is at complete rest
|define recovery rate
|the time it takes for the heart to return to resting heart rate
|define systolic and diastolic pressure
|measured by a sphygomomanometer systolic - the pressure against the vessel walls when the heart is contracting diastolic - the pressure against the vessel walls when the heart is relaxing ( in between beats)
|state some short term effects of exercise on the cardiovascular system
|- increase in heart rate - increase in systolic blood pressure - increase in stroke volume - increase in cardiac output
|state some long term effects of exercise on the cardiovascular system
|- increase in size and strength of the heart ( cardiac hypertrophy) - increase in stroke volume - decrease in resting heart rate - quicker recovery rate - increased maximum cardiac output - increased number of red blood cells - increased capillerisation
|What is the role of the cardiovascular system
|1. To transport oxygen in the blood to the working muscles 2. remove waste products 3. return the blood to the lungs for oxygenation
|What is the equation for cardiac output
|stroke volume x heart rate
|Which is normally lower systolic or diastolic blood pressure
|diastolic, because the blood flow is slower when relaxing - so there pressure is lower.
|What's an issue with too high blood pressure
|it can put strain on your arteries
|What are the effects of an unhealthy diet on the blood vessels
|fatty deposits can build up in blood vessels, resulting in high blood pressure and high cholesterol.
|How many types of cholesterol are there?
|What are the names for the two cholesterols
|(HDL) High Density Lipoproteins - This is the good cholesterol that can take away cholesterol to be broken down (LDL) Low Density Lipoproteins - This is the bad cholesterol that causes deposits to build up in the arteries. This makes it harder for the blood to circulate.
|How can long term exercise affect blood pressure and cholesterol
|It lowers your blood pressure It lowers your cholesterol levels.
|What are the dangers of doing nothing to reduce your b.p or cholesterol levels
|You could suffer from stoke or coronary heart failure