Chapter 19
Heart Anatomy and Physiology Quiz
Test your knowledge of the human heart with this comprehensive quiz covering anatomy, blood flow, and electrical activity. Challenge yourself on various aspects related to cardiovascular fun
Topics include:
- Heart chambers and valves
- Electrical conduction system
- Blood circulation
The left atrium receives blood from the pulmonary circuit and empties it into the __________.
Left ventricle
Conus arteriosus
Right atrium
Right ventricle
Blood from the coronary circuit is collected on the posterior aspect of the heart in a blood vessel known as the __________.
Great cardiac vein
Circumflex branch
Coronary sinus
Interventricular vein
When deoxygenated blood leaves the right ventricle through a semilunar valve, it is forced into the __________.
Aortic arch
Pulmonary veins
Lung capillaries
Pulmonary arteries
What is the correct sequential path of a normal action potential in the heart?
AV node, SA node, AV bundle, bundle of His
SA node, AV node, bundle branches, Purkinje fibers
SA node, AV node, bundle branches, AV bundle, Purkinje fibers
SA node, AV bundle, AV node, Purkinje fibers
Blood flows from the left atrium through the __________ to the left ventricle.
Mitral valve
Aortic valve
Pulmonary valve
Tricuspid valve
The P wave on the ECG indicates __________.
The spread of electrical events over both ventricles
The contraction of the atria
The spread of the electrical events down the interventricular septum
The electrical events spreading out over both atria
After the AV node is depolarized and the impulse spreads through the atria, there is a slight delay before the impulse spreads to the ventricles. The reason for this delay is to allow __________.
The atria to fill with blood
A greater venous return
The atria to contract
The ventricles to contract
The QRS complex of the ECG appears as the __________.
Ventricles depolarize
Atria depolarize
Ventricles repolarize
Atria repolarize
When a chamber of the heart fills with blood and prepares for the start of the next cardiac cycle, the chamber is in __________.
Ventricular ejection
Diastole
Systole
Isovolumetric contraction
Parasympathetic stimulation from the vagus nerve results in __________.
No effect on the heart rate
A decrease in heart rate
An increased heart rate and cardiac output
More forceful ventricular contractions
Which heart chamber has the thickest muscular walls?
Left atrium
Right atrium
Left ventricle
Right ventricle
What is the function of the chordae tendineae?
To anchor the semilunar valve flaps and prevent backward flow of blood into the ventricles
To anchor the bicuspid valve flaps and prevent backflow of blood into the ventricles
To anchor the aortic valve flaps and prevent backflow into the ventricles
To anchor the AV valve flaps and prevent backflow of blood into the atria
Which of the following would NOT show up on ECG waves?
Atrium diastole
Atrium systole
Ventricle diastole
Ventricle systole
During ventricular systole, the blood volume in the atria is __________, and the volume in the ventricle is __________.
Decreasing; increasing
Decreasing; decreasing
Increasing; increasing
Increasing; decreasing
Cardiac muscle cells are nourished via blood supply provided from the __________.
Coronary circuit
Systemic circuit
Pulmonary circuit
Coronary, pulmonary, and systemic circuits
Pulmonary arteries carry blood to the __________.
Aorta
Left atrium
Right atrium
Lungs
In the diastole phase of the ventricles, __________.
Presystolic pressures are high
The semilunar valves are open
The ventricles are “resting”
The AV valves are closed
Which of the following does NOT control the movement of blood through the heart?
Contraction of the myocardium
Size of the atria and ventricles
Opening and closing of the valves
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