Pathophysiology Exam 6 2025 QUESTIONS AND
CORRECT ANSWERS ALREADY GRADED A+
PROFESSOR VERIFIED
1. What coronary artery is most involved in MI?: Left Anterior Descending
(LAD) Coronary Artery
2. Which area of the heart does the LAD supply blood to?: Left ventricle;
supplies blood to rest of body
3. What are the layers of the heart?:
1. Endocardium
2. Myocardium
3. Epicardium (includes the pericardium)
4. what is the basic function of the layers of the heart?: endocardium: lines of
heart chambers and valves, facilitating smooth blood flow
myocardium: contains cardiac muscle cells responsible for heart contraction
epicardium: provide a protective outer layer
5. illustrate the flow of blood through the heart: Deoxygenated blood returns to
the right atrium via the superior and inferior vena cava.
, It passes through the tricuspid valve into the right ventricle, which pumps blood to
the pulmonary artery.
The pulmonary artery carries blood to the lungs for oxygenation.
Oxygenated blood returns to the left atrium through the pulmonary veins.
It passes through the bicuspid (mitral) valve into the left ventricle, which pumps
blood into the aorta for distribution throughout the body.
6. what is the function of the conduction system?: The sinoatrial (SA) node
initiates the heartbeat. (stimulates the atria)
The signal travels to the atrioventricular (AV) node, which delays it briefly.
The atrioventricular (AV) bundle (Bundle of His) conducts the signal to the
ventricles(right and left purkinje fibers), causing them to contract.
7. regulators of HR: - SNS regulators (beta cells)
- PNS regulators - repsond to acetylcholine (M2)
8. beta blockers (-olol): lower HR and improve blood pressure
- reducing PVR AND decreasing HR
9. always check ___ pulse before administering a beta blocker: apical
10. Illustrate the electrical currents in the heart, including the activity of
sodium, calcium and potassium: T wave= Repolarization (K+ exits the cell)
11. p wave: atrial contraction (depolarization)
12. QRS complex: ventricular depolarization (contraction)
CORRECT ANSWERS ALREADY GRADED A+
PROFESSOR VERIFIED
1. What coronary artery is most involved in MI?: Left Anterior Descending
(LAD) Coronary Artery
2. Which area of the heart does the LAD supply blood to?: Left ventricle;
supplies blood to rest of body
3. What are the layers of the heart?:
1. Endocardium
2. Myocardium
3. Epicardium (includes the pericardium)
4. what is the basic function of the layers of the heart?: endocardium: lines of
heart chambers and valves, facilitating smooth blood flow
myocardium: contains cardiac muscle cells responsible for heart contraction
epicardium: provide a protective outer layer
5. illustrate the flow of blood through the heart: Deoxygenated blood returns to
the right atrium via the superior and inferior vena cava.
, It passes through the tricuspid valve into the right ventricle, which pumps blood to
the pulmonary artery.
The pulmonary artery carries blood to the lungs for oxygenation.
Oxygenated blood returns to the left atrium through the pulmonary veins.
It passes through the bicuspid (mitral) valve into the left ventricle, which pumps
blood into the aorta for distribution throughout the body.
6. what is the function of the conduction system?: The sinoatrial (SA) node
initiates the heartbeat. (stimulates the atria)
The signal travels to the atrioventricular (AV) node, which delays it briefly.
The atrioventricular (AV) bundle (Bundle of His) conducts the signal to the
ventricles(right and left purkinje fibers), causing them to contract.
7. regulators of HR: - SNS regulators (beta cells)
- PNS regulators - repsond to acetylcholine (M2)
8. beta blockers (-olol): lower HR and improve blood pressure
- reducing PVR AND decreasing HR
9. always check ___ pulse before administering a beta blocker: apical
10. Illustrate the electrical currents in the heart, including the activity of
sodium, calcium and potassium: T wave= Repolarization (K+ exits the cell)
11. p wave: atrial contraction (depolarization)
12. QRS complex: ventricular depolarization (contraction)
