Cardiovascualr System

Question 1

What is the cardiovascular system?

Answer 1

The cardiovascular system consists of the heart, blood and the blood vessels.

Question 2

Define blood pressure

Answer 2

Blood pressure is the force exerted by circulating blood on the walls of the blood vessels

Question 3

Define systolic blood pressure

Answer 3

Systolic blood pressure is the maximum pressure in the arteries when the heart contracts

Question 4

Define diastolic blood pressure

Answer 4

Diastolic blood pressure is the pressure of the blood during the relaxation phase of the heart beats

Question 5

Define lactic acid

Answer 5

Lactic acid is the waste product which is produced during exercise and is produced quicker when the intensity of exercise is higher.

Question 6

Define cardiac output

Answer 6

Cardiac output is the amount of blood ejected from the heart in one min

Question 7

Define stroke volume

Answer 7

Stroke volume is the volume of blood pumped out of the heart by each ventricle during one contraction

Question 8

What are the long term benefits of the cardiovascular system when doing regular exercise ?

Answer 8

Decreased heart rate 
Quicker heart recovery
Increased stroke volume 
Reduced blood pressure
Healthier veins and arteries

Question 9

What is cholesterol and the two types?

Answer 9

Cholesterol is a fatty substance carried in the blood by lipoproteins.

High density lipoproteins (HDL) - contains more proteins than fat so is referred to as good cholesterol because it carries Cholestid away from the arteries to the liver which removes it from the body

Low density lipoproteins (LDL) - contains mainly fats so is a bad cholesterol. Can lead to build up of plaque in the blood which can restrict blood flow up the arteries.

Question 10

What are the effects of drugs on the cardiovascular system?

Answer 10

Cigarettes - raises blood pressure
Smoking - lowers HDL and increases blood clots
Alcohol - lowering of blood pressure