heart 🩷

Question 1

what is the circulatory system?

Answer 1

organ system with the role of transporting oxygen and nutrients to our body’s tissues.

Question 2

what does the circulatory system rely on?

Answer 2

blood (carrying the oxygen and nutrients)
blood vessels (carrying the blood)
heart (pumping the blood)

Question 3

what is deoxygenated blood?

Answer 3

blood with no oxygen
it goes from the heart to the lungs where it gains oxygen then flows back to the heart

Question 4

what is oxygenated blood?

Answer 4

blood with oxygen
it goes to the rest of the body and gives oxygen to tissues, then it becomes deoxygenated and flows to the heart

Question 5

artery

Answer 5

takes blood away from the heart

Question 6

vein

Answer 6

takes blood towards the heart

Question 7

what are the top chambers called?

Answer 7

atria (single is atrium)

Question 8

what are the bottom chambers called?

Answer 8

ventricles

Question 9

what can be found between vessels and chambers?

Answer 9

valves

Question 10

what do valves do?

Answer 10

prevents the blood from flowing backwards, ensuring it will always flow in right direction

Question 11

where are the valves?

Answer 11

between the chambers and the vessels

Question 12

where are the pace maker cells?

Answer 12

right atrium

Question 13

what are pace maker cells for?

Answer 13

produce small electrical impulses which spread through the muscular wall of the heart, causing them to contract

Question 14

how does the blood enter the heart?

Answer 14

enters via the vena cava and the pulmonary vain

Question 15

where does the blood go after it enters the heart?

Answer 15

from the vena cava and pulmonary vein, it flows into the right atrium and left atrium (respectively)

Question 16

what is the blood from the pulmonary vain like?

Answer 16

it came from the lungs so it’s oxygenated

Question 17

what is the blood from the vena cava like?

Answer 17

came from the loop around the body so it’s deoxygenated

Question 18

what happens after the blood leaves the atria?

Answer 18

the atria contract together and blood is pushed down to the relaxed ventricles
Then the ventricles contract and push the blood out into pulmonary artery (goes into the lungs) and the aorta (to the body)

Question 19

how does the heart get its own supply of oxygenated blood?

Answer 19

it’s supplied by small arteries that branch off the aorta called coronary arteries
(muscle gets oxygen and nutrients it needs)

Question 20

what does pumping at a higher pressure do?

Answer 20

more glucose, more oxygen, more respiration, more energy

Question 21

average bpm for adult

Answer 21

60-80

Question 22

bpm calc

Answer 22

CO=SV x HR
cardiac output (dm^/min)
stroke volume x heart rate

Question 23

what’s blood rossure measured in

Answer 23

mm/Hg

Question 24

what’s blood rossure measured in

Answer 24

mm/Hg