Blood transport system

Question 1

What are arteries?

Answer 1

Thick walled blood vessel carrying blood away from the heart

Question 2

What are arterioles?

Answer 2

Small arteries
Blood flows away from the heart within arteries and as the blood gets further away from the heart then various branches of the artery take the blood to parts of the body (these branches are arterioles)

Question 3

What are veins?

Answer 3

Thin walled blood vessel carrying blood towards the heart

Question 4

Wha are venues?

Answer 4

Small being
Collect blood that has passed through the different parts of the body and these unite to form large veins that take blood back to the heart

Question 5

What are capillaries?

Answer 5

Tiny blood vessels supplying nutrients to cells and removing waste materials

Question 6

What are the functions of the blood?

Answer 6

Transport gas, nutrients, waste
Regulates temperature
Buffers and balances acid

Question 7

What is the composition of blood?

Answer 7

About 60% plasma and 40% formed elements (red and white blood cells and blood platelets)

Question 8

How does the shunting of blood occur?

Answer 8

Through dilation and constriction of the arterioles

Question 9

Define blood pressure

Answer 9

Cardiac output x total peripheral resistance
As the heart pumps blood through the blood vessels, the vessels offer resistance (like friction) to the flow of blood and this creates the blood pressure

Question 10

Define systolic pressure

Answer 10

Pressure of the heart contracting

Question 11

Define diastolic pressure

Answer 11

Pressure of the relaxed heart

Diastolic blood pressure remains constant during exercise