12 Questions
What causes the first heart sound 'lub'?
Closure of the mitral and tricuspid valves
Which valve does blood pass through immediately after leaving the right ventricle?
Pulmonic valve
What is the role of the SA node in the heart's electrical activity?
Initiating heart muscle contractions
Why is the left side of the heart thicker than the right side?
The left side generates higher force to pump to the entire body
During an ECG, which wave represents atrial depolarization?
P wave
Where does blood go immediately after passing through the mitral valve?
Left atrium
What is the main cause of angina pectoris?
Reduced blood flow to the heart muscle
Which side of the heart carries deoxygenated blood?
Right side
Which cardiac phase involves the contraction and pumping of blood out of the ventricles?
Ventricular ejection
What differs in resistance between the systemic and pulmonary circulation?
Blood pressure
What is the formula for calculating cardiac output?
$CO = SV imes HR$
What cellular process is involved in the pacemaker potential?
Slow depolarization
Learn about the normal heart sounds and what they reflect, as well as the entire pathway of blood in the heart. Explore the phases of the cardiac cycle and how blood flows through the circulatory system.
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