2.1 a matter of the heart

Question 1

is the heart a single or double pump?

Answer 1

double pump

Question 2

what does right hand side of your heart do?

Answer 2

pumps blood to your lungs

Question 3

what does the left hand side of your heart do?

Answer 3

pumps oxygen rich blood to all other organs in the body

Question 4

does it matter to the left hand side of your heart how far are the organs?

Answer 4

no, it does not matter

Question 5

which hand-side of your heart has a thicker wall of cardiac muscle tissue? and why?

Answer 5

the left hand side. because it has to pump blood to all the organs: including far ones.

Question 6

how many areas does your heart have, what are they called, what are their names and where is which name?

Answer 6

4. called chambers. the upper 2 chambers are called the left atrium and right atrium. the lower two chambers are called left ventricle and the right ventricle.

Question 7

how does your heart beat?

Answer 7

contracting and relaxing its cardiac muscle tissue

Question 8

what happens during a heartbeat? does it repeat itself throughout your lifetime?

Answer 8

first both atria contract at the same time.
when the atria relax, both ventricles contract at the same time. and yes, it does repeat itself throughout your lifetime.

Question 9

how many directions does the blood flow in? and what are they?

Answer 9

only 1 direction. atria to ventricles, ventricles to the lungs and other organs.

Question 10

what is there between each atrium and ventricle? and what does it work like?

Answer 10

a valve. works like a door that opens in 1 direction.

Question 11

what is the valve between the right atrium and the right ventricle called?

Answer 11

tricuspid valve

Question 12

what is the valve between the left atrium and the left ventricle called?

Answer 12

bicuspid valve

Question 13

what do the tricuspid and bicuspid valves control?

Answer 13

the blood flow into the ventricles

Question 14

are there valves between each ventricle and the blood vessel that connects to it?

Answer 14

yes

Question 15

what is the valve between the left ventricle and the pulmonary artery called?

Answer 15

the pulmonary valve

Question 16

what is the valve between the right ventricle and the aorta called?

Answer 16

the aortic valve

Question 17

what do the pulmonary valve and the aortic valve do?

Answer 17

they stop blood flow from flowing backwards into the heart

Question 18

what does the left side of the heart contain?

Answer 18

blood that’s rich in oxygen

Question 19

what does the right side of the heart contain?

Answer 19

oxygen-poor blood

Question 20

what’s the wall between the left and right parts of the heart called? and what does it do?

Answer 20

it’s called septum. it seperates the two types of blood from eachother.

Question 21

what would happen if oxygen-rich and oxygen-poor blood will mix within the heart?

Answer 21

your cells would not recieve the oxygen they need

Question 22

what is the heart’s specific rhythm of contraction and relaxation called and what is it set up by?

Answer 22

set up by a group of cells, collectively called the pacemaker.

Question 23

what will happen if they brain detects high levels of a waste gas called carbon dioxide in your blood?

Answer 23

it will make the pacemaker speed up the rhythm.

Question 24

what will hapeen if the brain makes the pacemaker to speed up the rhythm?

due to high levels of carbon dioxide in your blood

Answer 24

the carbon dioxide will be delieverd to the lungs where it can be breathed out

Question 25

what do patiens with heart rhythm problems often have and what does it do?

Answer 25

they often have an artificial pacemaker implanted which sends electrical signals directly to the heart muscle.