B1 - The cardiovascular system

Question 1

what does the cardiovascular system consist of ?

Answer 1

the heart, blood vessels and blood

Question 2

what is the function of the cardiovascular system ?

Answer 2

The function of the cardiovascular system is to transport important substances around the body e.g. oxygen, glucose etc.

Question 3

what is the function of the heart ?

Answer 3

The heart pumps blood around the body

Question 4

In mammals what system is the heart a part of ?

Answer 4

the heart is part of a double circulatory system (blood passes through the heart twice per cycle)

Question 5

what is pulmonary circulation ?

Answer 5

When the blood passes through the heart and is pumped to the lungs, returning back to the heart

Question 6

what is systematic circulation ?

Answer 6

The blood now passes through the heart a second time (the blood is re-pressurised) and pumped round the body organs before returning to the hear

Question 7

why does the blood move around the body ?

Answer 7

due to the pressure difference between the pressure in the heart and the pressure in the blood vessels.

Question 8

Give an example of mass flow ?

Answer 8

Blood moves around the body due to the pressure difference between the pressure in the heart (high) and the pressure in the blood vessels (low)