BIO 117 HONDROS EXAM 3 UPDATED ACTUAL QUESTIONS AND CORRECT
ANSWERS VERIFIED 2027 EDITION
1. The apex of the heart is located
5th intercostal space
2. Which layer of the heart allows it to act as a pump?
Myocardium
3. What is the apex of the heart?
The tip of the heart, pointing down towards the left 5th intercostal space.
4. Which layer of the heart wall contains the epicardium?
Pericardium
5. What surrounds the heart?
Pericardium
6. What is related to the mitral valve (tricuspid valve)?
Bicuspid valve
7. Which of the following contains oxygenated blood?
Left Atrium, Pulmonary veins, Aorta
8. Which of the following contains deoxygenated blood?
Superior Vena Cava, Right Atrium, Pulmonary Arteries
9. What supplies oxygenated blood to the heart muscle?
Coronary Arteries
10. Which layer of the heart contains actin, myosin, and troponin?
Myocardium
11. Which valves are open during atrial systole?
Tricuspid Mitral
12. What is true of blood leaving the tissues and traveling towards the right atrium?
Oxygen poor, carbon dioxide rich
13. Valve that prevents backflow of blood into the left ventricle when the left ventricle is in diastole?
Aortic
14. The aorta receives blood from what structure?
Left ventricle
15. Which vessel carries blood from the pulmonary capillaries to the left atrium?
Pulmonary veins
16. Which cavity of the heart first receives unoxygenated blood from the vena cava?
Right atrium
1
, 17. What is the right semilunar valve separating the right ventricle and the pulmonary artery?
The pulmonic valve
18. What is the function of the pulmonic valve?
To prevent blood flow from the pulmonary arteries to the right ventricle during ventricular diastole
19. What do heart rate and stroke volume determine?
Cardiac output
20. What is the left ventricle doing when the right ventricle is contracting?
Pumping blood into the great vessels
21. Where does the cardiac action potential normally originate?
SA node
22. What chamber is the pacemaker located in?
right atrium
23. What is the function of the perkinje fibers?
To conduct electrical signals throughout the ventricles
24. Where is BP the lowest?
Inferior vena cava
25. What vessel carries unoxygenated blood from the liver to the inferior vena cava?
Hepatic Veins
26. Circulation in the lower extremity is assessed by palpating which artery?
Femoral
27. What artery supplies the head and neck region?
Carotid
28. Largest vein in the body?
Vena Cava
29. Which of the following carries unoxygenated blood?
Jugulars
30. What organ do the carotid and vertebral arteries supply?
Brain
31. What is the function of the ductus arteriosus?
Shunts blood away from the fetal lungs
32. What blood vessels bring unoxygenated blood to the liver?
Hepatic portal vein
33. Insufficient blood supply to an organ?
Ischemia
34. If the ductus arteriousus fails to close after birth, bloods shunts from the aorta to which blood
vessel?
Pulmonary arteries
2
ANSWERS VERIFIED 2027 EDITION
1. The apex of the heart is located
5th intercostal space
2. Which layer of the heart allows it to act as a pump?
Myocardium
3. What is the apex of the heart?
The tip of the heart, pointing down towards the left 5th intercostal space.
4. Which layer of the heart wall contains the epicardium?
Pericardium
5. What surrounds the heart?
Pericardium
6. What is related to the mitral valve (tricuspid valve)?
Bicuspid valve
7. Which of the following contains oxygenated blood?
Left Atrium, Pulmonary veins, Aorta
8. Which of the following contains deoxygenated blood?
Superior Vena Cava, Right Atrium, Pulmonary Arteries
9. What supplies oxygenated blood to the heart muscle?
Coronary Arteries
10. Which layer of the heart contains actin, myosin, and troponin?
Myocardium
11. Which valves are open during atrial systole?
Tricuspid Mitral
12. What is true of blood leaving the tissues and traveling towards the right atrium?
Oxygen poor, carbon dioxide rich
13. Valve that prevents backflow of blood into the left ventricle when the left ventricle is in diastole?
Aortic
14. The aorta receives blood from what structure?
Left ventricle
15. Which vessel carries blood from the pulmonary capillaries to the left atrium?
Pulmonary veins
16. Which cavity of the heart first receives unoxygenated blood from the vena cava?
Right atrium
1
, 17. What is the right semilunar valve separating the right ventricle and the pulmonary artery?
The pulmonic valve
18. What is the function of the pulmonic valve?
To prevent blood flow from the pulmonary arteries to the right ventricle during ventricular diastole
19. What do heart rate and stroke volume determine?
Cardiac output
20. What is the left ventricle doing when the right ventricle is contracting?
Pumping blood into the great vessels
21. Where does the cardiac action potential normally originate?
SA node
22. What chamber is the pacemaker located in?
right atrium
23. What is the function of the perkinje fibers?
To conduct electrical signals throughout the ventricles
24. Where is BP the lowest?
Inferior vena cava
25. What vessel carries unoxygenated blood from the liver to the inferior vena cava?
Hepatic Veins
26. Circulation in the lower extremity is assessed by palpating which artery?
Femoral
27. What artery supplies the head and neck region?
Carotid
28. Largest vein in the body?
Vena Cava
29. Which of the following carries unoxygenated blood?
Jugulars
30. What organ do the carotid and vertebral arteries supply?
Brain
31. What is the function of the ductus arteriosus?
Shunts blood away from the fetal lungs
32. What blood vessels bring unoxygenated blood to the liver?
Hepatic portal vein
33. Insufficient blood supply to an organ?
Ischemia
34. If the ductus arteriousus fails to close after birth, bloods shunts from the aorta to which blood
vessel?
Pulmonary arteries
2
