Biomed 100 Practice Quiz
Chapter 13, Spring 2008

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Multiple Choice - One Correct Choice Per Question

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1. There are four (4) heart valves and they are located
   1. between veins and the atria
   2. between the atria and the ventricles
   3. between ventricles and arteries
   4. B. and C.
   5. all of the above
   
   
2. Which heart chamber receives deoxygenated from systemic veins?
   1. right atrium
   2. left atrium
   3. right ventricle
   4. left ventricle
   
   
3. Normally the _?_ and the _?_ contract simultaneously.
   1. right atrium and right ventricle
   2. right ventricle and left ventricle
   3. coronary arteries and coronary sinus
   4. sinoatrial node and atrioventricular node
   
   
4. When does ventricular filling occur?
   1. During most or all of ventricular systole.
   2. During most or all of ventricular diastole.
   3. During atrial systole only.
   4. During atrial diastole only.
   
   
5. Heart sounds are due mainly to
   1. contraction of cardiac muscle fibers
   2. passage of blood into and through coronary circulation
   3. opening of heart valves, allowing blood to suddenly move forward
   4. closing of heart valves, causing a "shock wave" when blood collides with closed valve flaps
   
   
6. Given the following key:
   SA node = sinoatrial node
   AV node = atrioventricular node
   Which one of the following correctly describes the functions of the nodes?

   1. AV node = pacemaker & stimulates atria / SA node stimulates ventricles
   2. SA node = pacemaker & stimulates atria / AV node stimulates ventricles
   3. AV node = pacemaker / SA node stimulates atria and ventricles
   4. SA node = pacemaker / AV node stimulates atria and ventricles

   
   

   Which statement is true?

   1. All parts of the heart are electrically conductive.
   2. Other than the SA node and the AV node, there are no electrically conductive structures involved in stimulation of heart muscle.
   3. None of the above are true.

   
   

   When compared to veins, capillaries have

   1. thinner walls
   2. less pressure in them
   3. both of the above
   4. none of the above

   
   

   Of the items on the following list, normally the _?_ is the greatest pressure (in mm. Hg.).

   1. pulse pressure
   2. systolic pressure
   3. diastolic pressure
   4. mean arterial pressure

   
   

   In anterior (front) view, the _?_ is "down" and on the left.

   1. right atrium
   2. left atrium
   3. right ventricle
   4. left ventricle

   
   

   The pulmonary arteries carry

   1. oxygenated blood
   2. blood from the heart to the lungs
   3. blood from the lungs to the heart
   4. both A. and B.
   5. both A. and C.

   
   

   Which one of the following contains deoxygenated blood?

   1. "left heart" (left atrium and left ventricle)
   2. right coronary artery
   3. all systemic arteries
   4. all systemic veins

   
   

   If, due to a heart defect, blood could pass directly from the right side of the heart to the left side of the heart...

   1. the pulmonary arteries would contain oxygenated blood
   2. the SA node would cease to function as the pacemaker
   3. the myocardium would fail to receive any blood from the coronary circulation
   4. organs such as the brain, muscles, and kidneys would not receive fully oxygenated blood

   
   

   Heart muscle receives most of its oxygen from

   1. coronary arteries
   2. pulmonary arteries
   3. blood in the chambers
   4. the SA node and AV node

   
   

   In a person who is physically at rest,

   1. the ventricles spend approximately equal amounts of time in systole and in diastole
   2. the ventricles spend more time in systole than they do in diastole
   3. the ventricles spend more time in diastole than they do in systole