structure of the heart

Question 1

what divides the heart into 2 chambers

Answer 1

septum

Question 2

atria

Answer 2

smaller than ventricles

• push blood into ventricles
• do not require much force so they are have thinner muscular walls

Question 3

ventricles

Answer 3

thicker muscular walls as they need to contract with greater force in order to push blood out of the heart.

Question 4

why is the left side of the heart bigger than the right

Answer 4

as it needs to pump blood all around the body whereas there right side pumps deoxygenated blood to the lungs

Question 5

vena cava

Answer 5

vein

brings deoxygenation blood back to the right atrium

Question 6

pulmonary vein

Answer 6

blood vessel

oxygenated blood to the left atrium

Question 7

pulmonary artery

Answer 7

blood vessel

leaves right ventricle with deoxygenated blood to go to the lungs

Question 8

aorta

Answer 8

leaves the left ventricle with oxygenated blood leading to the body

Question 9

valves

Answer 9

regulate blood flow by ensuring it moves in only 1 direction.
- they open to allow blood to pass through then close to prevent back flow

Question 10

four main valves in the heart

Answer 10

• tricuspid valves
• bicuspid valves
• 2 semi-lunar valves

Question 11

tricuspid valve located

Answer 11

between right atrium and right ventricle

Question 12

bicuspid valve located

Answer 12

between left atrium and left ventricle

Question 13

semi lunar valves

Answer 13

• between right and left ventricles and the pulmonary artery and aorta