CHD

Question 1

what do the coronary arteries do?

Answer 1

• supply the heart muscle with blood
• this blood provides the glucose & oxygen needed for aerobic respiration & removes the CO2 produced by aerobic respiration

Question 2

what will happen if you have a lot of saturated fats in your diet?

Answer 2

fatty deposits will build up in the artery walls

Question 3

what do fatty deposits do?

Answer 3

narrow the lumen (space) of the artery

Question 4

why are narrow lumens a problem for the coronary arteries?

Answer 4

it restricts blood flow to the heart muscle cells

Question 5

what do the fatty deposits cause the heart muscles do?

Answer 5

the heart muscle cells receive less blood

Question 6

if the heart muscle cells receive less blood, what does this mean in terms of oxygen and glucose?

Answer 6

• the heart muscle cells receive less oxygen and glucose for aerobic respiration

Question 7

if aerobic respiration reduces what happens?

Answer 7

• anaerobic respiration increases in the heart muscle cells
• lactic acid will build up

Question 8

what happens if lactic acid builds up in the heart muscle cells due to the increase in anaerobic respiration?

Answer 8

• poisoning the heart muscle cells
• causing heart attacks

Question 9

what risk factors are there that make CHD more likely?

Answer 9

• diet
• smoking
• high blood pressure
• obesity
• lack of exercise

Question 10

how can diet be a risk factor for CHD?

Answer 10

eating lots of saturated fat increases blood cholesterol and increases the risk of fatty deposits

Question 11

how can smoking be a risk factor for CHD?

Answer 11

increases blood pressure and increases the risk of fatty deposits forming

Question 12

how can high blood pressure be a risk factor for CHD?

Answer 12

• damages the artery lining
• increases the risk of fatty deposits forming
• high salt levels in your diet increase the risk of high blood pressure

Question 13

how can obesity be a risk factor for CHD?

Answer 13

being obese will increase blood pressure and may be linked to poor diet

Question 14

how can lack of exercise be a risk factor for CHD?

Answer 14

causes high blood pressure