Question 1

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 ventricle 
A)  Atrioventricular (AV) node 
B)  Sinoatrial (S
A)  node 
C)  Bundle of His 
D)  The left ventricle

Question 2

The PR interval viewed on a normal electrocardiogram represents:

Accepted Answer

A)  atrial depolarization. 
B)  ventricular depolarization. 
C)  onset of atrial activation to onset of ventricular activity. 
D)  "electrical systole" of the ventricles. 
A)  atrial depolarization. 
B)  ventricular depolarization. 
C)  onset of atrial activation to onset of ventricular activity. 
D)  "electrical systole" of the ventricles.

Question 3

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. 
A)  autonomic regulation. 
B)  somatic regulation. 
C)  autoregulation. 
D)  metabolic regulation.

Question 4

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 hormone 
A)  Acetylcholine 
B)  Dopamine 
C)  Epinephrine 
D)  Thyroid hormone

Question 5

A 13 year old took a weight loss drug that activated the sympathetic nervous system.Which of the following assessment findings would the nurse expect?

Accepted Answer

A)  Decreased myocardial contraction 
B)  Decreased heart rate 
C)  Increased cardiac conduction 
D)  Increased intranodal conduction time 
A)  Decreased myocardial contraction 
B)  Decreased heart rate 
C)  Increased cardiac conduction 
D)  Increased intranodal conduction time

Question 6

The internal lining of the cardiovascular system is formed by what tissue?

Accepted Answer

A)  Tunica adventitia 
B)  Connective 
C)  Mesothelium 
D)  Endothelium 
A)  Tunica adventitia 
B)  Connective 
C)  Mesothelium 
D)  Endothelium

Question 7

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

Question 8

The primary cardiovascular control center is located in the:

Accepted Answer

A)  cerebral cortex. 
B)  thalamus. 
C)  medulla. 
D)  hypothalamus. 
A)  cerebral cortex. 
B)  thalamus. 
C)  medulla. 
D)  hypothalamus.

Question 9

Within a normal physiologic range, an increase in left ventricular end-diastolic volume would lead the nurse to monitor for:

Accepted Answer

A)  an increased force of contraction. 
B)  a decrease in cardiac output. 
C)  an increase in heart rate. 
D)  heart failure. 
A)  an increased force of contraction. 
B)  a decrease in cardiac output. 
C)  an increase in heart rate. 
D)  heart failure.

Question 10

The pericardium is:

Accepted Answer

A)  the outer muscular layer of the heart. 
B)  the innermost layer of the heart chambers. 
C)  a membranous sac that encloses the heart. 
D)  the heart's fibrous skeleton. 
A)  the outer muscular layer of the heart. 
B)  the innermost layer of the heart chambers. 
C)  a membranous sac that encloses the heart. 
D)  the heart's fibrous skeleton.

Question 11

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 fraction 
A)  Vascular resistance 
B)  Preload 
C)  Cardiac output 
D)  Ejection fraction

Question 12

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)  Ventricles 
A)  Atrioventricular (AV) node 
B)  Sinoatrial (S
A)  node 
C)  Bundle of His 
D)  Ventricles

Question 13

The process by which an action potential in the plasma membrane of a myocardial cell triggers the events that directly cause contraction of the myocardial cells is referred to as:

Accepted Answer

A)  electrocontraction. 
B)  intercalated communication. 
C)  excitation-contraction coupling. 
D)  myosin communication. 
A)  electrocontraction. 
B)  intercalated communication. 
C)  excitation-contraction coupling. 
D)  myosin communication.

Question 14

Which chamber of the heart generates the highest pressure?

Accepted Answer

A)  Right atrium 
B)  Left atrium 
C)  Left ventricle 
D)  Right ventricle 
A)  Right atrium 
B)  Left atrium 
C)  Left ventricle 
D)  Right ventricle

Question 15

What structure conducts action potentials down the atrioventricular septum?

Accepted Answer

A)  Bachmann bundle 
B)  Bundle of His 
C)  Sinoatrial node 
D)  Atrioventricular node 
A)  Bachmann bundle 
B)  Bundle of His 
C)  Sinoatrial node 
D)  Atrioventricular node

Question 16

One difference between cardiac muscle and skeletal muscle is that:

Accepted Answer

A)  cardiac muscle cells are arranged in branching networks. 
B)  skeletal muscle cells have only one nucleus. 
C)  cardiac muscle cells appear striped. 
D)  skeletal muscle cells contain sarcomeres. 
A)  cardiac muscle cells are arranged in branching networks. 
B)  skeletal muscle cells have only one nucleus. 
C)  cardiac muscle cells appear striped. 
D)  skeletal muscle cells contain sarcomeres.

Question 17

Which structures act as anchors for the atrioventricular valves?

Accepted Answer

A)  Chordae tendineae 
B)  Great vessels 
C)  Coronary ostia 
D)  Trabeculae carneae 
A)  Chordae tendineae 
B)  Great vessels 
C)  Coronary ostia 
D)  Trabeculae carneae

Exam 25: Structure and Function of the Cardiovascular and Lymphatic Systems

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

The PR interval viewed on a normal electrocardiogram represents:

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

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

A 13 year old took a weight loss drug that activated the sympathetic nervous system.Which of the following assessment findings would the nurse expect?

The internal lining of the cardiovascular system is formed by what tissue?

Muscle contractions occur when there is a decreased:

The primary cardiovascular control center is located in the:

Within a normal physiologic range, an increase in left ventricular end-diastolic volume would lead the nurse to monitor for:

The pericardium is:

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

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?

The process by which an action potential in the plasma membrane of a myocardial cell triggers the events that directly cause contraction of the myocardial cells is referred to as:

Which chamber of the heart generates the highest pressure?

What structure conducts action potentials down the atrioventricular septum?

One difference between cardiac muscle and skeletal muscle is that:

Which structures act as anchors for the atrioventricular valves?

Cellular Biology

Genes and Genetic Diseases

Epigenetics and Disease

Altered Cellular and Tissue Biology

Fluids and Electrolytes, Acids and Bases

Innate Immunity: Inflammation and Wound Healing

Adaptive Immunity

Disorders of the Central and Peripheral Nervous Systems and Neuromuscular Junction

Alterations in Immunity

Infection and Defects in Mechanisms of Defense

Stress and Disease

Biology of Cancer

Cancer Epidemiology

Cancer in Children and Adolescents

Structure and Function of the Neurologic System

Pain, Temperature, Sleep, and Sensory Function

Alterations in Cognitive Systems, Cerebral Hemodynamics, and Motor Function

Mechanisms of Hormonal Regulation

Alterations of Hormonal Regulation

Obesity and Disorders of Nutrition

Structure and Function of the Hematologic System

Alterations of Hematologic Function

Alterations of Hematologic Function in Children

Alterations of Cardiovascular Function

Alterations of Cardiovascular Function in Children

Structure and Function of the Pulmonary System

Alterations of Pulmonary Function

Alterations of Pulmonary Function in Children

Structure and Function of the Renal and Urologic Systems

Alterations of Renal and Urinary Tract Function

Alterations of Renal and Urinary Tract Function in Children

Structure and Function of the Reproductive Systems

Alterations of the Female Reproductive System

Alterations of the Male Reproductive System

Structure and Function of the Digestive System

Alterations of Digestive Function

Alterations of Digestive Function in Children

Structure and Function of the Musculoskeletal System

Alterations of Musculoskeletal Function

Alterations of Musculoskeletal Function in Children

Structure, Function, and Disorders of the Integument

Alterations of the Integument in Children

Alterations of Neurologic Function in Children

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