HLT 250 Exam 2Questions with Correct
Answers
Insufficient blood flow in the coronary arteries to the heart is common in all of these
except:
Arrhythmias
which of the following is a neurotransmitter released by sympathetic nerves that travels
to the sinoatrial (SA) node of the heart to increase heart rate?
Norepinephrine
Alex goes to the hospital for a checkup after experiencing severe chest pain. After a
preliminary physical examination, a health care professional asks Alex to lie down,
places small metal disc electrodes up to a machine that starts recording the electrical
activity of Alex's heart. After the procedure, the health care professional hands over the
recording to a doctor for analysis. This recording is known as a(n):
Electrocardiogram
When Janice, a patient, complains of chest pain and dizziness, Dr. Hedrick suspects that
Janice is suffering from arrhythmia. Which of the following will help Dr. Hendrick
confirm his suspicion?
An electrocardiogram
In an electrocardiogram, the repolarization of the ventricles is represented by the:
T wave
Which of the following chambers of the heart pumps the blood out of the heart into the
aorta, where it then gets distributed to the rest of the body?
, The left ventricle
Alice has been feeling breathless and has been experiencing a tightness in her chest. She
makes gurgling sounds when she breathes. Dr. Pablo, a cardiologist, subjects Alice to a
thorough medical examination and diagnoses her with pulmonary edema. Dr. Pablo
attributes this condition to a defect in Alice's heart. Based on the information provided
in this scenario, from which of the following cardiac conditions is Alice most likely
suffering?
Left-sided chronic heart failure
A patient with atherosclerosis will also have:
Hypercholesterolemia
Identify an accurate statement about the nerve supply of the heart.
The autonomic nervous system regulates the rate and force of the contractions of the heart.
In the context of cardiac nerve supply, the sympathetic nervous system:
Becomes active when the body needs to expand energy during the "fight or flight" reaction.
What does the QRS wave of an electrocardiogram (ECG) represent?
The depolarization of the ventricles.
Which of the following statements is true of an electrocardiogram (ECG)?
The T wave represents the repolarization of the ventricles.
Which of the following classes of drugs was originally obtained from the plant leave of
Digitalis purpurea and Digitalis lanata?
Cardiac glycosides
Answers
Insufficient blood flow in the coronary arteries to the heart is common in all of these
except:
Arrhythmias
which of the following is a neurotransmitter released by sympathetic nerves that travels
to the sinoatrial (SA) node of the heart to increase heart rate?
Norepinephrine
Alex goes to the hospital for a checkup after experiencing severe chest pain. After a
preliminary physical examination, a health care professional asks Alex to lie down,
places small metal disc electrodes up to a machine that starts recording the electrical
activity of Alex's heart. After the procedure, the health care professional hands over the
recording to a doctor for analysis. This recording is known as a(n):
Electrocardiogram
When Janice, a patient, complains of chest pain and dizziness, Dr. Hedrick suspects that
Janice is suffering from arrhythmia. Which of the following will help Dr. Hendrick
confirm his suspicion?
An electrocardiogram
In an electrocardiogram, the repolarization of the ventricles is represented by the:
T wave
Which of the following chambers of the heart pumps the blood out of the heart into the
aorta, where it then gets distributed to the rest of the body?
, The left ventricle
Alice has been feeling breathless and has been experiencing a tightness in her chest. She
makes gurgling sounds when she breathes. Dr. Pablo, a cardiologist, subjects Alice to a
thorough medical examination and diagnoses her with pulmonary edema. Dr. Pablo
attributes this condition to a defect in Alice's heart. Based on the information provided
in this scenario, from which of the following cardiac conditions is Alice most likely
suffering?
Left-sided chronic heart failure
A patient with atherosclerosis will also have:
Hypercholesterolemia
Identify an accurate statement about the nerve supply of the heart.
The autonomic nervous system regulates the rate and force of the contractions of the heart.
In the context of cardiac nerve supply, the sympathetic nervous system:
Becomes active when the body needs to expand energy during the "fight or flight" reaction.
What does the QRS wave of an electrocardiogram (ECG) represent?
The depolarization of the ventricles.
Which of the following statements is true of an electrocardiogram (ECG)?
The T wave represents the repolarization of the ventricles.
Which of the following classes of drugs was originally obtained from the plant leave of
Digitalis purpurea and Digitalis lanata?
Cardiac glycosides
