Cardiovascular System: The Heart

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Cardiovascular System: The Heart

Cardiovascular System: The Heart


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Roll over each component of the Cardiovascular System multimedia piece. Roll over and click the heart. Refer to the Heartcomponent of the multimedia piece and Ch. 23 in Microbiology: Principles and Explorations to label the structures in the following diagrams of a healthy cardiovascular system.




PART three: investigate and apply

Select one of the following diseases related to the cardiovascular system, discussed in Ch. 23 of Microbiology: Principles and Explorations:


·         Rheumatic fever

·         Bacterial endocarditis


Describe the causal agent of the selected disease, mode of transmission, disease characteristics, and the component(s) of the cardiovascular system that are damaged by the disease.


[Type your response below]



©2008 University of Phoenix. All rights reserved.


SCI250 Week 6 Chapter 23 Cardiovascular System Quiz –Please underline, highlight and select the most appropriate answer. 10 pts each.

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




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