structure of the heart

Question 1

Pulmonary artery

Answer 1

going to the lungs

Question 2

pulmonary vein

Answer 2

coming back from the lungs

Question 3

septum

Answer 3

divides the two muscular pumps

Question 4

4 chambers

Answer 4

2 atria, 2 ventricles

Question 5

blood flows from atria to…

Answer 5

veins

Question 6

the ventricles ….

Answer 6

pump blood out into arteries at high pressure

Question 7

right ventricle pumps blood….

Answer 7

to the lungs to get oxygenated

Question 8

left ventricle pumps blood…

Answer 8

to the whole body via aorta so thicker muscular wall

Question 9

atria have ______ muscular walls than the ventricles

Answer 9

less

Question 10

one way valves between atrium and ventricle make sure….

Answer 10

the blood flows in one direction

Question 11

the septum

Answer 11

a wall of muscle tissue that prevents deoxygenated and oxygenated blood from mixing

Question 12

atrioventricular valves

Answer 12

one way valves between atrium and ventricles make sure the blood flows in one direction - from atrium into ventricle

Question 13

semi-lunar valves

Answer 13

at base of aorta and pulmonary artery to prevent back-flow of blood into the ventricles

valves open to let the blood flow towards the heart

valves close to stop blood flowing backwards

Question 14

Aorta

Answer 14

Carries blood to the rest of the body

right side

Question 15

the activity of the heart can be measured by

Answer 15

Electrocardiogram (ECG)

Pulse rate - flow of blood through arteries (=heart rate)

listening to the sounds of the valves opening and closing