Cardiac Quiz

Blood is pumped to the lungs through the ___________________.

• left ventricle
• aorta
• superior vena cava
• pulmonary trunk

What node has the highest depolarization rate, sets the pace for the whole heart, and is known as the pacemaker of the heart?

• SA node
• AV node
• Bundle of His
• Purkinje fibers

Damage to the AV node can cause the ventricles to beat at their intrinsic rate of 20-40bpm. This condition is called:

• myocardial infarction
• ischemia
• heart block
• heart murmur

What is the first organ that receives the oxygenated blood pumped out of the heart?

• brain
• lungs
• mesentery
• heart

Ischemia may lead to a rapid, uncoordinated shuddering of the heart muscle, which resembles a bag of worms. This condition is called:

• infarction
• fibrillation
• murmur
• heart block

In the ECG below, which of the following results from the depolarization of the ventricles?

• 5
• 1
• 2
• 3
• 4

Which of the following is the general order of blood flow throughout the body?

• arteries, arterioles, capillaries, venules, veins
• venules, veins, capillaries, arteries, arterioles
• capillaries, veins, venules, arteries, arterioles
• arteries, venules, capillaries, veins, venules

Which of the following features smooth muscle tissue controlled by the sympathetic nervous system?

• tunica externa
• tunica media
• tunica intima
• none of the above

Which artery is examined during the auscultatory method?

• popliteal
• iliac
• subclavian
• brachial

Which ventricle of the heart has a thicker myocardium and why?

• The right; because it only pumps blood to the lungs.
• The left; because it only pumps blood to the lungs.
• The left; because it pumps blood to the entire body.
• The right; because it pumps blood to the entire body.