THE MAMMALIAN HEART;CORONARY HEART DISEASE

Question 1

What do the coronary arteries do?

Answer 1

Supply the cardiac muscle of the heart with O2/glucose/nutrients/remove CO2,supplying it with its own blood system called ‘coronary circulation’

Question 2

What is coronary heart disease?

Answer 2

When the coronary arteries, get clogged up with fat deposits
=plaques form(build up of plaque)
=When the plaque falls it can cause a blood clot
=which reduces the blood flow to the heart muscle
= reducing the oxygen reaching the cells of the heart muscle
=reduces respiration
=less energy (less ATP produced)
=the heart muscles can’t contract
=heart cannot beat which causes a heart attack

Question 3

Name some risk factors of CHD

Answer 3

geneticallyor lifestyle(smoking,diet,lack of exercise)

Question 4

What is one risk factor of CHD

Answer 4

it could be hereditary some ppl inherit a tendency towards CHD (carrying an allele for CHD)

Question 5

How is smoking a risk factor of CHD?

Answer 5

The chemicals in tobaco MAKE THE BLOOD VESSELS NARROWER=INCREASES BLOOD PRESSURE=INCREASES THE CHANCE OF THE FORMATION OF PLAQUE

Question 6

How is poor diet a risk factor of CHD?

Answer 6

Foods in high saturated fats/salts is likely to raise cholesterol levels——–) HIGH levels of cholesterol
——)could cause fatty deposits to build up in the coronary arteries.

—-) a blood clot can form on a fatty deposit —–)the blood clot can block a coronary artery.

Question 7

Why is having high cholesterol (From a bad diet) bad?

Answer 7

HIGH levels of cholesterol cause FATTY DEPOSITS to build up in the coronary arteries-)
a blood clot can form which-)
can block a coronary artery-)
heart muscle cells not enough oxygen and nutrients needed
-) no energy
-)no heart contraction
-)HEART ATTACK

Question 8

Why is stress a factor of CHD?

Answer 8

Increases blood pressure=more likely for the artery to get clogged up with a fatty deposits from perhaps bad diet

Question 9

What would be your advise to someone who wants to avoid CHD?

Answer 9

Exercise more regularly because regular exercise helps reduces BP and strengthens the heart

Question 10

What other advise to someone who is at risk from CHD?

Answer 10

If you are genetically predisposed to getting CHD you could take it into account and make changes in lifestyle and diet

Question 11

How does good diet reduce the chance of CHD?

Answer 11

Limiting how much saturated fats you eat –) reduce your blood cholesterol–)lowers your risk of coronary artery disease

–) A high blood cholesterol level—)lead to a buildup of plaques in your arteries —–)which can increase your risk of heart attack and stroke