Cardiovascular System

Question 1

Chambers of the heart

Answer 1

Atria and ventricle

Question 2

Function of septum

Answer 2

Divides the left and right sides

Question 3

Function of semi-lunar valve

Answer 3

Prevent back flow into ventricles

Question 4

Tricuspid valve

Answer 4

Between right atrium and ventricle

Question 5

Bicuspid valve

Answer 5

Between left atrium and ventricle

Question 6

Vena cava

Answer 6

Brings deoxygenated blood to the heart

Question 7

Pulmonary vein

Answer 7

Carries oxygenated blood from lungs to heart

Question 8

Pulmonary artery

Answer 8

Sends deoxygenated blood to the lungs

Question 9

Aorta

Answer 9

Largest artery distributes oxygenated blood

Question 10

Myogenic muscle

Answer 10

Heart muscle contracts without nerve signals

Question 11

(SAN)

Answer 11

Heart’s pacemaker, initiates heartbeat

Question 12

(Avn)

Answer 12

Delays impulse for ventricular filling

Question 13

Bundle of his and Purkinje fibres

Answer 13

Conducts impulses for ventricular contraction

Question 14

Cardiac output

Answer 14

Heart rate x stroke volume

Question 15

Arteries

Answer 15

Elastic, thick muscle, small lumen, high pressure

Question 16

Veins

Answer 16

Thin walls, large lumen, valves, low pressure

Question 17

Capillaries

Answer 17

One cell thick, diffusion site, connects arteries to veins

Question 18

Atrial systole

Answer 18

Atria contract

Question 19

Ventricular systole

Answer 19

Ventricles contract

Question 20

Cardiac diastole

Answer 20

Heart relaxes

Question 21

Major blood vessels

Answer 21

Vena cava, pulmonary vein/ artery, Aorta, coronary artery

Question 22

Arrhythmias

Answer 22

Irregular heartbeat

Question 23

CVD treatments

Answer 23

Antihypertensive’s, statins, transplants and immunosuppressants

Question 24

P wave

Answer 24

Atrial depolarisation - electrical impulse starts at the SAN and spreads across to the atria, causing them to contract and push blood into the ventricles

Question 25

QRS complex

Answer 25

Ventricular depolarisation, The electrical signal passes through the AVN down the bundle of his and purkinje fibres leading to ventricular contraction

Question 26

T wave

Answer 26

Ventricular repolarisation, this is when the ventricles relax und prepare for the next contraction

Question 27

Cardiac cycle

Answer 27

- Atrial Systole: Atria contract, blood flows into ventricles, AV valves open. - Ventricular Systole: Ventricles contract, blood flows into arteries, AV valves close, semi-lunar valves open. - Cardiac Diastole: Heart relaxes, blood flows into atria, AV valves open, semi-lunar valves close.