measures of the circulatory system

Question 1

what are the 4 measures of the circulatory system

Answer 1

cardiac output, stroke volume, heart rate and blood pressure

Question 2

cardiac output (Q)

Answer 2

is the amount of blood pumped out by the heart in one minute (L/min)

Question 3

cardiac output formula

Answer 3

Q=SV x HR
cardiac output = stroke volume x heart rate

Question 4

stroke volume (SV)

Answer 4

is the amount of blood that is pumped out of the left ventricle each beat
-measured in ml/beat

Question 5

stroke volume measured by

Answer 5

by subtracting the end systolic volume (ESV) from the end diastolic volume (EDV)
SV=EDV-ESV

example
SV= 130ml (EDV) -60ml (ESV)
SV=70ml

Question 6

what is diastole

Answer 6

when your heart is at rest during relaxation phase of the heart’s pumping action (it fills the left ventricle with blood about 130ml) (EDV)

Question 7

systole

Answer 7

when the heart is contracting during the contractile phase of the hearts pumping action (it pushes most of the blood out to the arteries, leaving about 60ml of blood in the left ventricle (ESV)

Question 8

what is the average resting heart rate

Answer 8

is about 70-75bm

Question 9

what is a heart rate

Answer 9

it is the number of times your heart beats every minute (bmp)

Question 10

the heart during exercise

Answer 10

each individual has a maximum heart rate which is the fastest that their heart is able to beat

Question 11

heart rate formula

Answer 11

Maximum heart rate (MHR) = 220-0.7 x age

Question 12

how is blood pressure measured

Answer 12

by a sphygmomanometer which takes 2 reading on the brachial artery (just above the elbow)

Question 13

what are the 2 reading in blood pressure

Answer 13

Diastolic pressure and Systolic pressure

Question 14

diastolic pressure is

Answer 14

a measure of the blood pressure against the artery walls during the relaxation phase of the heart’s pumping action

Question 15

Systolic pressure is

Answer 15

is the measure of the pressure that the blood exerts against the artery walls during the contractile stage of the hearts pumping action

Question 16

What are the factors the an individuals blood pressure is affected by

Answer 16

age, gender, stress, diet and exercise

Question 17

having high blood pressure puts stress on ur heart and can lead to …

Answer 17

angina, heart attacks and strokes

Question 18

factor of age

Answer 18

individuals blood pressure increases as you get older

Question 19

factor of gender

Answer 19

men tend to have higher blood pressure than women

Question 20

factors of stress

Answer 20

it can cause increased blood pressure

Question 21

factors of diet

Answer 21

salt and saturated fats can increase blood pressure

Question 22

factors of exercise

Answer 22

the fitter you are the lower you blood pressure is likely to be