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NR 283 /NR283 PATHO EXAM2 WEEK3,4,5 AND FINAL EXAM CHAMBERLAIN COLLEGE EXAM 170 QUESTIONS WITH DETAILED VERIFIED ANSWERS WITH ELABORATED DIAGRAMSAND RATIONALES /A+ GRADE ASSURED What is the primary function of the SA node in the heart?

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NR 283 /NR283 PATHO EXAM2 WEEK3,4,5 AND
FINAL EXAM CHAMBERLAIN COLLEGE EXAM
170 QUESTIONS WITH DETAILED VERIFIED
ANSWERS WITH ELABORATED DIAGRAMSAND
RATIONALES /A+ GRADE ASSURED
What is the primary function of the SA node in the heart?

A) To slow down the heart rate

B) To act as a gatekeeper for electrical signals

C) To initiate electrical impulses that set the rhythm and rate of the heart; "pacemaker" of the heart

D) To contract and pump blood to the ventricles

C) To initiate electrical impulses that set the rhythm and rate of the heart; "pacemaker" of the heart

What is the role of the AV node in the cardiac conduction system?

A) To act as the primary pacemaker of the heart

B) To contract and pump blood into the ventricles

C) To slow the electrical signal before it enters the ventricles

D) To prevent the backflow of blood into the atria

C) To slow the electrical signal before it enters the ventricles

Which valves make up the S2 sound?

1. ________________________

2. ________________________

,1. Aortic
2. Pulmonic

Which valves make up the S1 sound?

1. ________________________

2. ________________________

1. Bicuspid/mitral
2. Tricuspid

What is the term used to describe the filling of the ventricles with blood?

A) Afterload

B) Preload

C) Stroke volume

D) Cardiac output

B) Preload

Afterload refers to:

A) The amount of pressure needed to pump blood out of the ventricles; the resistance the left ventricle
must overcome to pump the blood into circulation

B) The amount of blood returning to the heart

C) The volume of blood filling the ventricles before contraction

D) The electrical impulses that set the heart rate

,A) The amount of pressure needed to pump blood out of the ventricles; the resistance the left ventricle
must overcome to pump the blood into circulation

Which formula correctly represents cardiac output (CO)?

A) CO = HR + SV (Stroke Volume)

B) CO = HR - SV (Stroke Volume)

C) CO = HR x SV (Stroke Volume)

D) CO = HR / SV (Stroke Volume)

C) CO = HR x SV (Stroke Volume)

What is the primary difference between atherosclerosis and arteriosclerosis?

A) Atherosclerosis refers to the hardening of arteries, while arteriosclerosis involves plaque buildup.

B) Atherosclerosis involves plaque buildup that obstructs blood flow, while arteriosclerosis refers to the
hardening of arteries.

C) Atherosclerosis is a type of arteriosclerosis that affects the veins, while arteriosclerosis affects the
arteries.

D) Atherosclerosis results from high blood pressure, while arteriosclerosis results from high cholesterol
levels.

B) Atherosclerosis involves plaque buildup that obstructs blood flow, while arteriosclerosis refers to the
hardening of arteries.

Which of the following describes bradycardia?

, A) HR > 100bpm

B) HR < 60bpm

C) Irregular heart contractions

D) Normal heart rhythm

B) HR < 60bpm

Which of the following best describes tachycardia?

A) HR > 100bpm

B) HR < 60bpm

C) Irregular heart contractions

D) Decreased cardiac output

A) HR > 100bpm

Which of the following are common signs and symptoms of bradycardia (HR < 60 bpm)?

A) Palpitations, high blood pressure, sweating

B) Weakness, fatigue, low blood pressure, change in LOC

C) Chest pain, shortness of breath, high heart rate

D) Dizziness, nausea, high blood pressure

B) Weakness, fatigue, low blood pressure, change in LOC

Which of the following are common signs and symptoms of atherosclerosis?

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NR 283 /NR283 PATHO EXAM2 WEEK3,4,5 AND FINAL EXAM CHAMBERLAIN COLLEGE EXAM 170 QUESTIONS WITH DETAILED VERIFIED ANSWERS WITH ELABORATED DIAGRAMSAND RATIONALES /A+ GRADE ASSURED What is the primary function of the SA node in the heart?

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