Cardiovascular System: The Heart

Section: Multiple Choice

1.     The normal microflora of the heart includes species of ________

• Gram-positive bacteria.
• Gram-negative bacteria.
• fungi.
• viruses.
• None of the above

2.     Which of the following is least likely to cause Septicemia leading to endotoxin-induced shock?

• Staphylococcus aureus
• Pseudomonas aeruginosa
• Klebsiella
• Proteus
• Serratia

3.     Reddened streaks extending up a limb to the trunk would indicate the presence of ________

• bacteremia.
• edema.
• lymphangitis.
• Lyme disease.
• septicemia.

4.     Rheumatic fever caused by Streptococcus pyogenes most likely results from ________

• the invasion of heart cells by bacteria.
• the growth of bacteria on heart cells without invasion.
• a reaction between heart antigens and antibodies against bacteria.
• viral infections of the heart muscle.
• a toxin produced by bacteria.

5.     What causes puerperal fever?

• Streptococcus pyogenes
• Staphylococcus aureus
• Pseudomonas aeruginosa
• Yersinia pestis
• None of the above

6.     Characteristics of  endocarditis include

• Diagnosed by positive blood culture.
• Organisms are transported from an infectious foci to the heart.
• Inflammation of the lining and valves of heart.
• Can be caused by bacteria, fungi and or viruses
• All of the above

7.     Most causes of myocarditis and  or pericarditis are caused by:

• Staphylococcus aureus
• Pseudomonas  aeruginosa
• Enteroviruses
• Antibiotics
• Streptococcus pyogenes

8.     Which of the following statements is true of concerning the cardiovascular system?

• It is it an open system that provides oxygen and nutrients to all cells of the body.
• Normal flora include Corynebacterium diphtheria and Staphylococcus epidermidis
• It includes the blood, vessels and the heart muscle
• It is frequently invaded by microorganisms
• None of the above

9.     Which of these best identify Blood chemistry?

• 90% water
• Contains formed elements (red blood cells, white blood cells, platelets)
• Contain proteins and antibodies.
• Contains electrolytes.
• All of the above

10.   Chlamydia species have been associated with_

• Atherosclerosis and coronary heart disease
• Marek’s Disease.
• Endocarditis
• Myocarditis
• Pericarditis