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Conduction System of the Heart Quiz

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Questions and Answers

Which layer of the heart is composed of mesothelium and connective tissue?

Pericardium
Endocardium
Myocardium
Epicardium (correct)

Where is the heart located within the thoracic cavity?

Above the lungs
Outside the thoracic cavity
Below the lungs
Between the lungs (correct)

Which chambers of the heart receive blood from the pulmonary circuit?

Right atrium and right ventricle (correct)
Left atrium and right ventricle
Right atrium and left ventricle
Left atrium and left ventricle

Which chamber of the heart receives blood from the superior and inferior vena cava and the coronary sinus?

Right atrium (D) Signup and view all the answers

What is the function of the atrioventricular (AV) valves in the heart?

Prevent blood flow from the ventricles back into the atria (C) Signup and view all the answers

Which part of the heart is involved in systemic circulation?

Left ventricle (C) Signup and view all the answers

Which one of these represents the correct sequence of events during the cardiac cycle?

Atrial systole, ventricular systole, atrial diastole, ventricular diastole (A) Signup and view all the answers

Which one of these represents the correct order of depolarization and repolarization in the heart?

Atrial depolarization, ventricular depolarization, ventricular repolarization (C) Signup and view all the answers

Which one of these factors does NOT affect stroke volume?

Heart rate (C) Signup and view all the answers

Which part of the brain is responsible for the nervous control of the cardiovascular system?

Medulla oblongata (D) Signup and view all the answers

What are the factors that influence heart rate?

All of the above (D) Signup and view all the answers

Which type of impulses increase heart rate and the force of contraction?

Sympathetic impulses (C) Signup and view all the answers

Which hormones affect heart rate?

Epinephrine and norepinephrine (A) Signup and view all the answers

Which ions can affect heart rate?

K+ and Ca+2 (C) Signup and view all the answers

Which conditions can affect heart rate?