AAOS EMT Chapter 17: Cardiovascular
Emergencies Exam Questions And
Answers
coronary sinus -
correct answer ✅largest vein on posterior of heart
collects blood from great cardiac vein and several smaller veins
drains into right atrium
myocardium -
correct answer ✅middle layer of heart wall
responsible for cardiac contraction
Left main coronary artery (LMCA) -
correct answer ✅largest diameter and shortest myocardial vessel
rapidly divides into Left Anterior Descending and Circumflex
Arteries
#3
,AAOS EMT Chapter 17: Cardiovascular
Emergencies Exam Questions And
Answers
Left Anterior Descending artery (LAD) -
correct answer ✅provides blood to lateral surface of LV and
portions of inter ventricular septum in most PT's
Circumflex artery (Cx) -
correct answer ✅supplies blood to LA, part of lateral surface of LV,
(inferior and posterior LV in 15% of PT's)
(SA node in 40% of PT's)
(AV bundle in 10-15% of PT/s)
Right Coronary Artery (RCA) -
correct answer ✅supplies blood to RA and RV as well as portions
of the inferior LV and conduction system (SA node (60%) and AV
bundle(85-95%))
automaticity
, AAOS EMT Chapter 17: Cardiovascular
Emergencies Exam Questions And
Answers
excitability
conductivity
contractility -
correct answer ✅what are the 4 main properties of cardiac cells/
SA node, AV node, Bundle of His, right and left Bindle branches, and
Purkinje fibers -
correct answer ✅the 6 pieces that comprise the cardiac
conduction system
acute coronary syndrome -
correct answer ✅a series of cardiac conditions that are caused by
an abrupt reduction in blood flow through a coronary artery
3 major conditions are unstable angina, NSTEMI, and STEMI
sudden dyspnea suggests -
correct answer ✅PE, pneumothorax, acute pulmonary edema,
pneumonia, or airway obstruction
Emergencies Exam Questions And
Answers
coronary sinus -
correct answer ✅largest vein on posterior of heart
collects blood from great cardiac vein and several smaller veins
drains into right atrium
myocardium -
correct answer ✅middle layer of heart wall
responsible for cardiac contraction
Left main coronary artery (LMCA) -
correct answer ✅largest diameter and shortest myocardial vessel
rapidly divides into Left Anterior Descending and Circumflex
Arteries
#3
,AAOS EMT Chapter 17: Cardiovascular
Emergencies Exam Questions And
Answers
Left Anterior Descending artery (LAD) -
correct answer ✅provides blood to lateral surface of LV and
portions of inter ventricular septum in most PT's
Circumflex artery (Cx) -
correct answer ✅supplies blood to LA, part of lateral surface of LV,
(inferior and posterior LV in 15% of PT's)
(SA node in 40% of PT's)
(AV bundle in 10-15% of PT/s)
Right Coronary Artery (RCA) -
correct answer ✅supplies blood to RA and RV as well as portions
of the inferior LV and conduction system (SA node (60%) and AV
bundle(85-95%))
automaticity
, AAOS EMT Chapter 17: Cardiovascular
Emergencies Exam Questions And
Answers
excitability
conductivity
contractility -
correct answer ✅what are the 4 main properties of cardiac cells/
SA node, AV node, Bundle of His, right and left Bindle branches, and
Purkinje fibers -
correct answer ✅the 6 pieces that comprise the cardiac
conduction system
acute coronary syndrome -
correct answer ✅a series of cardiac conditions that are caused by
an abrupt reduction in blood flow through a coronary artery
3 major conditions are unstable angina, NSTEMI, and STEMI
sudden dyspnea suggests -
correct answer ✅PE, pneumothorax, acute pulmonary edema,
pneumonia, or airway obstruction
