1.5 - The heart and Cardiac cycle

Question 1

What is pulmonary circulation?

Answer 1

between the heart and lungs

Question 2

What is sysytemic circulation?

Answer 2

between the heart and body

Question 3

Where does the right atrium recieves its deoxygentated blood from?

Answer 3

superior and inferior vena cava

Question 4

Where does the left atrium recieve its oxygenated blood from?

Answer 4

left and right pulmonary veins

Question 5

Howare the ventricles different from the atria?

Answer 5

Ventricles have thicker walls

Question 6

What does the right ventricle do?

Answer 6

pumps blood to the lungs for pulmonary circulation

Question 7

What does the left ventricle do?

Answer 7

pumps blood to the
body for systemic circulation

Question 8

What happens in atrial systole?

Answer 8

Atria fills (pressure increases)
Forces AV valves to open
Atria contracts

Question 9

What happens in ventricular systole?

Answer 9

Ventricles contract
pressure in ventricles increases (closing AV valves)
SL valves open

Question 10

What happens in diastole?

Answer 10

Atria and ventricles relax
higher pressure in arteries (closing SL valves)
blood flows into heart