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Question 1

Blood Flow Through Heart

Answer 1

• Oxygen-poor blood draining from the body through veins into the superior and inferior vena cava flows to the right atrium, through the tricuspid valve, and into the right ventricle.
• As the right ventricle contracts, oxygen-poor blood passes through the pulmonary valve into the pulmonary arteries and to the lungs to receive oxygen.
• Oxygen-rich blood from the lungs enters the heart through the pulmonary veins, passing into the left atrium.
• Then through the mitral valve to the left ventricle.
• Contraction of the left ventricle forces blood through the aortic valve into the aorta.
• Various arteries branch off from the aorta to supply blood to all parts of the body.

Question 2

Each Half of the Heart Pumps Blood in a ……. Circuit

Answer 2

Different

Question 3

Pulmonary Circuit is Between……..and…… only

Answer 3

lungs and heart

starts in right ventricle → the pulmonary trunk → pulmonary arterie → lung → pulmonary veins → ends in the left atrium.

Question 4

-what carries deoxygenated blood to lungs?

– What carries oxygenated blood to heart?

Answer 4

• pulmonary arteries

- pulmonary veins

Question 5

Systemic Circuit is between the…..and….

Answer 5

heart and the rest of the body

starts in left ventricle → the aorta → systemic arteries → systemic capillaries → systemic veins → superior & inferior vena cava → ends
in the right atrium.

Question 6

In this Circuit, Blood travels to and from…..

Answer 6

Tissues

Question 7

• first heart sound (S1) : produced by what?

* Second heart sound (S2): produced by what?

Answer 7

• closure of the atrioventricular (AV) valves

- closure of the semilunar valves