15 Questions
Which layer of the heart is composed of mesothelium and connective tissue?
Epicardium
Where is the heart located within the thoracic cavity?
Between the lungs
Which chambers of the heart receive blood from the pulmonary circuit?
Right atrium and right ventricle
Which chamber of the heart receives blood from the superior and inferior vena cava and the coronary sinus?
Right atrium
What is the function of the atrioventricular (AV) valves in the heart?
Prevent blood flow from the ventricles back into the atria
Which part of the heart is involved in systemic circulation?
Left ventricle
Which one of these represents the correct sequence of events during the cardiac cycle?
Atrial systole, ventricular systole, atrial diastole, ventricular diastole
Which one of these represents the correct order of depolarization and repolarization in the heart?
Atrial depolarization, ventricular depolarization, ventricular repolarization
Which one of these factors does NOT affect stroke volume?
Heart rate
Which part of the brain is responsible for the nervous control of the cardiovascular system?
Medulla oblongata
What are the factors that influence heart rate?
All of the above
Which type of impulses increase heart rate and the force of contraction?
Sympathetic impulses
Which hormones affect heart rate?
Epinephrine and norepinephrine
Which ions can affect heart rate?
K+ and Ca+2
Which conditions can affect heart rate?
All of the above
Test your knowledge of the conduction system of the heart with this quiz. Learn about the role of the sinoatrial (SA) node, the action potential, and the transmission of impulses through the atria and AV node.
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