The heart

Question 1

structure of the heart

Answer 1

Atrium: thin walls, elastic. stretches when it collects blood. only has to pump blood to the ventricle so muscle wall is thin.

Ventricle: much thicker muscular wall as it has to pump blood to lungs or rest of body

Question 2

which side deals with what

Answer 2

the left side deals with oxygenated blood from the lungs

the right side deals with deoxygenated blood from the lungs and the body

Question 3

what are valves

Answer 3

valves prevent the backflow of blood into the atria when the ventricles contract

Question 4

what are the types of valves

Answer 4

left artioventricular valve (bicuspid). 2 cup shaped flaps on the left side of the heart

right atrioventricular valve (tricuspid). 3 cup shaped flaps on the right of the heart

Question 5

what are the 4 pulmonary vessels

Answer 5

Aorta
Vena cava
Pulmonary artery
Pulmonary vein

Question 6

Aorta

Answer 6

connected to the left ventricle and carries oxygenated blood to all parts of the body EXCEPT the lungs

Question 7

Vena cava

Answer 7

connected to the right atrium, brings back deoxygentaed blood from the tissues of the body

Question 8

Pulmonary artery

Answer 8

connected to the right ventricle, carries deoxygenated blood to the lungs, where the oxygen is replenished

Question 9

Pulmonary vein

Answer 9

connected to the left atrium, brings back oxygenated blood from the lungs