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Anatomy of the Heart Quiz

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Questions and Answers

Which of the following is NOT a major blood vessel connected to the heart?

Aorta
Pulmonary artery
Brachial artery (correct)
Inferior vena cava

Which of the following is the correct order of blood flow through the heart's chambers?

Left atrium -> Left ventricle -> Right atrium -> Right ventricle
Left ventricle -> Left atrium -> Right ventricle -> Right atrium
Right atrium -> Right ventricle -> Left atrium -> Left ventricle
Right atrium -> Right ventricle -> Pulmonary circulation -> Left atrium -> Left ventricle -> Systemic circulation (correct)

What is the primary function of the pulmonary circulation?

To provide nutrients to the heart muscle
To regulate blood pressure throughout the body
To transport carbon dioxide-rich blood to the lungs for gas exchange (correct)
To transport oxygen-rich blood to the body's tissues

Which of the following is a characteristic of cardiac muscle compared to skeletal muscle?

Cardiac muscle is non-striated and involuntary (B) Signup and view all the answers

What is the main function of the sinoatrial (SA) node in the heart's conductive system?

To generate the heart's electrical impulses (D) Signup and view all the answers

Which of the following is a characteristic of the action potential in autorhythmic cells (pacemaker cells) of the heart?

Slow depolarization and slow repolarization (B) Signup and view all the answers

What is the main function of the parasympathetic nervous system's innervation of the heart?

To decrease heart rate and contractility (D) Signup and view all the answers

Which of the following EKG deflections represents the depolarization of the ventricles?

QRS complex (C) Signup and view all the answers

What is the primary cause of angina pectoris?

Decreased blood flow to the heart muscle (D) Signup and view all the answers

What is the primary function of the heart valves?

To prevent backflow of blood (B) Signup and view all the answers