Question 1

Baroreceptors are located in the:

Accepted Answer

A)   renal artery.
B)   superior vena cava.
C)   carotid artery.
D)   circle of Willis.E) None of the above
F) A) and C) C

Question 2

As a result of blockage in the pulmonary artery, blood would first back up into the:

Accepted Answer

A)   aorta.
B)   left ventricle.
C)   pulmonary veins.
D)   right ventricle.E) A) and B)
F) A) and C)

Question 3

Depolarization of a cardiac muscle cell occurs as the result of:

Accepted Answer

A)   a decrease in the permeability of the cell membrane to ions.
B)   the rapid movement of ions across the cell membrane.
C)   a blockade by calcium ions.
D)   stimuli instigated during the refractory period.E) A) and D)
F) A) and C)

Question 4

What structure conducts action potentials down the atrioventricular septum?

Accepted Answer

A)   Bachmann bundle
B)   Bundle of His
C)   Sinoatrial node
D)   Atrioventricular nodeE) None of the above
F) All of the above

Question 5

The primary cardiovascular control center is located in the:

Accepted Answer

A)   cerebral cortex.
B)   thalamus.
C)   medulla.
D)   hypothalamus.E) B) and C)
F) B) and D)

Question 6

Which chamber of the heart generates the highest pressure?

Accepted Answer

A)   Right atrium
B)   Left atrium
C)   Left ventricle
D)   Right ventricleE) B) and D)
F) B) and C)

Question 7

Local myogenic regulation of blood vessel diameter and thus blood flow through a vessel is an example of:

Accepted Answer

A)   autonomic regulation.
B)   somatic regulation.
C)   autoregulation.
D)   metabolic regulation.E) B) and C)
F) A) and C)

Question 8

A nurse observes a cardiologist multiplying the heart rate by stroke volume.What is the cardiologist measuring?

Accepted Answer

A)   Vascular resistance
B)   Preload
C)   Cardiac output
D)   Ejection fractionE) B) and C)
F) None of the above

Question 9

What is the nurse monitoring when observing the QRS complex on the electrocardiogram?

Accepted Answer

A)   Ventricular activity
B)   Pulmonary artery closure
C)   Mitral valve opening
D)   Aortic valve closingE) A) and C)
F) A) and B)

Question 10

A 50-year-old received trauma to the chest that caused severe impairment of the primary pacemaker cells of the heart.Which of the following areas received the greatest damage?

Accepted Answer

A)   Atrioventricular (AV)  node
B)   Sinoatrial (S
A)   node
C)   Bundle of His
D)   VentriclesE) A) and B)
F) A) and C)

Question 11

Muscle contractions occur when there is a decreased:

Accepted Answer

A)   distance between Z lines.
B)   A band length.
C)   Z line length.
D)   H zone distance.E) B) and C)
F) A) and D)

Question 12

A 50-year-old was prescribed a drug that acts as a negative inotrope.Which endogenous substances would be most similar?

Accepted Answer

A)   Acetylcholine
B)   Dopamine
C)   Epinephrine
D)   Thyroid hormoneE) None of the above
F) A) and D) A

Question 13

After activation of the Bainbridge reflex in a patient, the nurse assesses for:

Accepted Answer

A)   increased heart rate.
B)   decreased blood pressure.
C)   increased rate and depth of respirations.
D)   decreased myocardial contractility.E) A) and B)
F) None of the above

Question 14

A 20-year-old underwent an echocardiogram to assess chest pain.Results revealed a congenital defect in the papillary muscles.Which of the following would the nurse expect to occur?

Accepted Answer

A)   Closure of the semilunar valve
B)   Backward expulsion of the atrioventricular valves
C)   Closure of the atrioventricular valve
D)   Backward expulsion of the semilunar valvesE) A) and B)
F) All of the above

Question 15

Which structures would not receive an electrical impulse when the patient is experiencing a left bundle branch block?

Accepted Answer

A)   Atrioventricular (AV)  node
B)   Sinoatrial (S
A)   node
C)   Bundle of His
D)   The left ventricleE) A) and B)
F) None of the above

Question 16

What represents the sum of all ventricular muscle cell depolarization?

Accepted Answer

A)   PR interval
B)   QRS complex
C)   QT interval
D)   P waveE) A) and B)
F) A) and C)

Question 17

A nurse is discussing the pressure generated at the end of diastole.Which term is the nurse describing?

Accepted Answer

A)   Preload
B)   Afterload
C)   Systemic vascular resistance
D)   Total peripheral resistanceE) A) and D)
F) B) and D)

Question 18

What term is used to identify the period that follows depolarization of the myocardium and represents a period during which no new cardiac potential can be propagated?

Accepted Answer

A)   Absolute refractory
B)   Hyperpolarization
C)   Resting
D)   ThresholdE) A) and B)
F) B) and D) A

Question 19

The molecule that aids in bonding of the troponin complex to actin and tropomyosin is troponin:

Accepted Answer

A)   C.
B)   I.
C)   T.
D)   M.E) A) and B)
F) None of the above

Question 20

Which structures act as anchors for the atrioventricular valves?

Accepted Answer

A)   Chordae tendineae
B)   Great vessels
C)   Coronary ostia
D)   Trabeculae carneaeE) C) and D)
F) A) and B)

Exam 23: Structure and Function of the Cardiovascular and Lymphatic Systems

Baroreceptors are located in the:

Correct AnswerverifiedC

As a result of blockage in the pulmonary artery, blood would first back up into the:

Correct AnswerverifiedShow Answer

Depolarization of a cardiac muscle cell occurs as the result of:

Correct AnswerverifiedShow Answer

What structure conducts action potentials down the atrioventricular septum?

Correct AnswerverifiedShow Answer

The primary cardiovascular control center is located in the:

Correct AnswerverifiedShow Answer

Which chamber of the heart generates the highest pressure?

Correct AnswerverifiedShow Answer

Local myogenic regulation of blood vessel diameter and thus blood flow through a vessel is an example of:

Correct AnswerverifiedShow Answer

A nurse observes a cardiologist multiplying the heart rate by stroke volume.What is the cardiologist measuring?

Correct AnswerverifiedShow Answer

What is the nurse monitoring when observing the QRS complex on the electrocardiogram?

Correct AnswerverifiedShow Answer

A 50-year-old received trauma to the chest that caused severe impairment of the primary pacemaker cells of the heart.Which of the following areas received the greatest damage?

Correct AnswerverifiedShow Answer

Muscle contractions occur when there is a decreased:

Correct AnswerverifiedShow Answer

A 50-year-old was prescribed a drug that acts as a negative inotrope.Which endogenous substances would be most similar?

Correct AnswerverifiedA

After activation of the Bainbridge reflex in a patient, the nurse assesses for:

Correct AnswerverifiedShow Answer

A 20-year-old underwent an echocardiogram to assess chest pain.Results revealed a congenital defect in the papillary muscles.Which of the following would the nurse expect to occur?

Correct AnswerverifiedShow Answer

Which structures would not receive an electrical impulse when the patient is experiencing a left bundle branch block?

Correct AnswerverifiedShow Answer

What represents the sum of all ventricular muscle cell depolarization?

Correct AnswerverifiedShow Answer

A nurse is discussing the pressure generated at the end of diastole.Which term is the nurse describing?

Correct AnswerverifiedShow Answer

What term is used to identify the period that follows depolarization of the myocardium and represents a period during which no new cardiac potential can be propagated?

Correct AnswerverifiedA

The molecule that aids in bonding of the troponin complex to actin and tropomyosin is troponin:

Correct AnswerverifiedShow Answer

Which structures act as anchors for the atrioventricular valves?

Correct AnswerverifiedShow Answer

Correct Answer
verified
C

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
A

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
A

Correct Answer
verified

Correct Answer
verified