ch 19 review guide pt 2

Question 1

Which vessels carry deoxygenated blood back to heart?

Answer 1

SVC and IVC

Question 2

Which chamber of the heart receives oxygenated blood from the pulmonary veins?

Answer 2

Left atrium

Question 3

What is the function of AV valves?

Answer 3

Prevent backflow of blood into the atria

Question 4

Which circulation transports blood from the right side of the heart to the lungs and back?

Answer 4

Pulmonary circulation

Question 5

Where is the heart located within the thoracic cavity?

Answer 5

Between the lungs in the mediastinum

Question 6

Which layer of the pericardium attaches directly to the heart?

Answer 6

Visceral layer of serous pericardium

Question 7

What is the function of the fibrous skeleton of the heart?

Answer 7

Provides structural support and anchors valves

Question 8

Which chamber of the heart has the thickest wall?

Answer 8

Left ventricle

Question 9

What is the role of chordae tendineae in the heart?

Answer 9

Anchor AV valves to papillary muscles

Question 10

Which type of heart valve prevents backflow of blood into the ventricles?

Answer 10

Semilunar valves

Question 11

What causes the closure of semilunar valves during the cardiac cycle?

Answer 11

Increase in ventricular pressure

Question 12

Which coronary artery supplies the posterior left and right ventricles?

Answer 12

Posterior interventricular artery

Question 13

Which structures receives deoxygenated blood from the cardiac veins?

Answer 13

Coronary sinus