Advent Health EKG (Latest 2023/ 2024 Update) Questions and Verified Answers | 100% Correct| Grade A
Advent Health EKG (Latest 2023/ 2024
Update) Questions and Verified Answers |
100% Correct| Grade A
Q: What valve is located between right atrium and right ventricle?
Answer:
tricuspid valve
Q: What valve prevents the backflow of blood from the pulmonic artery to the ventricles?
Answer:
pulmonic valve
Q: What valve prevents the backflow of blood from the aortic artery to the ventricles?
Answer:
aortic valve
Q: What is the shake of the semilunar valves?
Answer:
moonshaped
Q: What is the pathway of the blood?
Answer:
superior vena cava, rt atrium, triscupid valve, rt ventricle, pulmonic valve, pulmonic artery,
lungs, pulmonary vein, left atrium, mitral valve, left ventricle, aortic valve, aorta, to the body
Q: What supplies blood to the heart?
Answer:
the coronary arteries
Q: What two main coronary arteries comes from the aorta that provides blood to the heart
muscle?
Answer:
left and right coronary artery
Q: The right coronary artery supplies blood to what parts of the heart?
Answer:
- lower inferior wall of the left ventricle
- right atrial muscle
- right ventricular muscle
- SA node
- AV node
Q: The left anterior descending (LAD) supplies blood to what?
Answer: - anterior wall of the rt ventricle
- apex
- the interventricular septum
- anterolateral wall of the left ventricle
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Where is the heart located?
2/3 of the heart is located on the left of the sternum
T or F: Apex of the heart is the top part of the heart
False, base is called the top part and apex is the bottom of the heart
What is the outer layer of the heart itself that contains nerves, coronary blood vessels, and connective tissues?
Epicardium
What is the myocardium layer?
its the muscle layer
What layer of the heart provides pathways for blood supplies and electrical conduction system?
endocardium
List the layers of the heart from outermost to innermost.
epicardium
myocardium
endocardium
What are the AV valves?
triscuspid and mitral
T or F: AV Valves prevents the back flow of blood to the ventricles
False, AV valves (tricuspid and mitral) prevents the back flow of blood from the ventricles to the atrium
What valves is located between left atrium and left ventricle?
mitral valve
What valve is located between right atrium and right ventricle?
tricuspid valve
What valve prevents the backflow of blood from the pulmonic artery to the ventricles?
pulmonic valve
What valve prevents the backflow of blood from the aortic artery to the ventricles?
aortic valve
What is the shake of the semilunar valves?
moonshaped
What is the pathway of the blood?
superior vena cava, rt atrium, triscupid valve, rt ventricle, pulmonic valve, pulmonic artery, lungs, pulmonary vein, left atrium, mitral valve, left ventricle, aortic valve, aorta, to the body
What supplies blood to the heart?
the coronary arteries
What two main coronary arteries comes from the aorta that provides blood to the heart muscle?
left and right coronary artery
The right coronary artery supplies blood to what parts of the heart?
- lower inferior wall of the left ventricle
- right atrial muscle
- right ventricular muscle
- SA node
- AV node
The left anterior descending (LAD) supplies blood to what?
- anterior wall of the rt ventricle
- apex
- the interventricular septum
- anterolateral wall of the left ventricle
The circumflex artery supplies blood to what?
- left atrium
- posterior wall of the left ventricle
- lateral wall of the left ventricle
- AV node
- SA node
T or F: Both atrium chambers and ventricle chambers goes thru systole and diastole
True
What is the cardiac output?
amount of blood being pumped out of the aorta per minute
What is the normal adult cardiac output?
4-8L/minute
What affects the CO?
- age
- metabolic level
What factors affect afterload?
- arterial contractility
- pressure
- resistance
Increase volume of the blood results to increase or decrease in afterload?
increase
T or F: The autonomic nervous system controls the HR
True
T or F: Parasympathetic is also known as the rest and digest
True
T or F: The sympathetic system is also known as the fight or flight
True
What is the function of pacer cells in the heart?
responsible for spon generation and conduction of electric in the heart
What are the properties of cardiac cells?
- automaticity
- conductivity
- excitablity
- contractility
What property of the cardiac cell able to the conduct there own pulse?
automaticity
What is the pressure of the left ventricle overcomes to pump out blood?
afterload
How many phases are in the action potential cycle?
5 phases (0-4)
What phase?
-polarized/resting state (WAITING FOR A STIMULUS)
-potassium and sodium trade
-no stimulus
phase 4
What phase?
-depolarization
-receive an impulse
-changes of ion potassium goes in and sodium comes out
phase 0
What phase?
-repolarized state
-+/- return to original state (sodium goes back in and potassium comes back out)
phase 1
What phase?
-plateu state/repolarization
-calcium and potassium ions move
-membrane potential becomes more negative
phase 2
What phase?
-repolarization takes plase
phase 3
Describe the phases of the action potential cycle.
PHASE 0
-depolarization occurs because of the electric stimulus
PHASE 1
-start of repolarization
-cells prepart for next discharge
PHASE 2
-plateu period
-slow repolarization
PHASE 3
-cell repolarize
-K channel closes
phase 4
-waiting potential
-polarized/resting state
SA node can be found?
right upper of the atrial wall
What is the firing impulse of the SA node?
60-100
AV node is found?
lower part of the atrial ventricle
What is the firing rate of the AV node?
40-60 bpm
Where is the bundle of his located?
in the septum
What is the firing rate of the purkinjie fibers?
20-40 bpm
-can sustain life
When choosing for placement of electrodes for ECG what should you consider?
Choose
-close to the bone
-over soft tissue
Avoid
-thick muscles
-skin folds
-bony prominences
When should ECG electrodes should be changed or reapplied?
every 24 hours, after patient bath, skin become clammy and sweaty
