Heart

Question 1

Arteries

Answer 1

Has thick muscular walls
Found in organs and tissues
Usually carries oxygenated blood away from heart
Blood under very high pressure

Question 2

Veins

Answer 2

Usually carries deoxygenated blood
Blood is under low pressure
Valves to prevent blood backflow
Bring blood back to heart

Question 3

Capillaries

Answer 3

Has walls one cell thick

Blood is under pressure water and other substances are squeezed out into surrounding intercellular spaces

Question 4

Heart is made from

Answer 4

Cardiac muscles

Question 5

Valves needed

Answer 5

To prevent backflow of blood
Semi lunar
Atrio ventricular

Question 6

Double circulatory system

Answer 6

Route:
First part pumps blood to lungs to pick up oxygen and release carbon dioxide
Second part pumps blood around the body and back to the heart as de oxygenated blood

Question 7

Cardiac output

Answer 7

Volume of blood pumped through cardiovascular system in a minute

Question 8

Stroke volume

Answer 8

The volume of blood pumped through the left ventricle per beat

Question 9

Tidal volume

Answer 9

The normal volume of air displaced between inhalation and exhalation

Question 10

Calculation formula

Answer 10

CO= SV x HR

Cardiac output = stroke volume times heart rate

Question 11

How does fitness affect cardiovascular system?

Answer 11

Strengthens heart muscle
Improves heart’s ability to pump blood to your lungs and throughout your body
More blood to muscles
Heart muscle become more efficient and better able to pump blood through body
Better blood flow less clogging up= less heart attacks

Question 12

What happens to heart rate breathing rate and depth of breathing during exercise?

Answer 12

When exercising the heart rate is increased , this is because when exercising muscle cells respire more than when they are at rest, as they need more energy, and therefore need more oxygen
The heart contracts and releases faster so that sufficient oxygenated blood is taken to the muscles or around the body to make sure the muscles can continue to respire
Rate and depth if breathing increase to make sure more oxygen absorbed into the blood
Get more o2 in and co2 out

Question 13

Left side

Answer 13

To heart

Question 14

Right side

Answer 14

To lungs to pick up oxygen

Question 15

What happens to heart rate during exercise?

Answer 15

Heart rate increases

Move glucose , co2 and o2 in blood more quickly