University of Phoenix Material Integumentary System Lab – Week Five Introduction The integumentary system consists of skin, hair, nails, and nerves. As you learn about the various diseases that affect the integum
University of Phoenix Material
Integumentary System Lab – Week Five
Introduction
The integumentary system consists of skin, hair, nails, and nerves. As you learn about the various diseases that affect the integumentary system, it is important for you to understand the structures that can be affected by disease. Complete this lab to become familiar with a healthy system and to identify diseases related to the skin.
PART ONE: basic functions
Provide brief answers to the following questions to help you get acquainted with the basic functions of a healthy integumentary system. Refer to Ch. 19 in Microbiology: Principles and Explorations.
1. How does the integumentary system prevent disease?
2. How do sweat, sebaceous (oil), and mucus secretions help prevent disease?
3. Which types of bacteria are considered normal skin microflora?
4. Suppose a sample of bacteria was taken from your skin. If you were to perform a Gram stain on the sample, what is the likely Gram reaction – positive or negative? Explain your answer.
PART two: basic structures
Identify the selected integumentary system structures in the following diagram:
PART three: investigate and apply
Access the Public Diseases & Conditions A-Z Index on the Centers for Disease Control and Prevention website at http://www.cdc.gov/DiseasesConditions/. Research one microbe-related skin disease (excluding sexually transmitted diseases) and complete the following activity.
Read the information on the CDC site and provide a brief, one- to two-paragraph summary of the skin condition. Include the following in your description:
· The skin condition
· The microbe causing the condition
· Which structures of the integumentary system are affected—Use one or more structures included in Part Two.
· Who is at risk
· How serious the disease is
[Type your paragraph in the space below]
SCI250 Week 5 Chapter 19 Integumentary System Quiz – Test Bank
Section: Multiple Choice
1. The majority of the microorganisms on the surface of the human skin are ________
Gram-positive bacteria.
Gram-negative bacteria.
approximately equal numbers of Gram-positive and Gram-negative bacteria.
Spore-forming bacteria.
Enteric.
2. The outer layer of the skin is the _________ while the deeper layer is the _________
cutaneous, keratin.
dermis, sebum.
mucous, epidermis.
epidermis, dermis.
sebum, keratin.
3. A massive lesion caused by the spread of Staphylococcus aureus infection (often on the neck and upper back) is called a ________
boil.
furuncle.
Carbuncle.
abscess.
pustule.
4. Scalded skin syndrome is caused by exotoxins (exfoliatins) produced by ________
Streptococcus pyogenes.
Staphylococcus aureus.
Propionibacterium acnes.
Pseudomonas aeruginosa.
Demodex folliculorum.
5. Which of the following microorganisms causes scarlet fever?
Staphylococcus aureus
Propionibacterium acnes
Pseudomonas aeruginosa
Demodex folliculorum
Streptococcus pyogenes
6. The pus-producing skin infection (pyoderma) can be caused by ________
staphylococci.
streptococci.
corynebacteria.
a combination of staphylococci, streptococci, and corynebacteria.
All of the above
7. Which of the following is NOT a characteristic of impetigo?
It is common in children.
It can be caused by Staphylococcus aureus.
It can be caused by Streptococcus pyogenes.
It is highly contagious.
It can be caused by pseudomonads.
8. What bacteria can multiply in blocked skin pores, metabolize sebum, and lead to the development of acne?
Pseudomonas aeruginosa
Propionibacterium
Serratia marcescens
Streptococcus pyogenes
Acne is not caused by a bacterial infection.
9. Burn patients often develop a nosocomial infection caused by ________
Streptococcus epidermis
Staphylococcus aureus
Pseudomonas aeruginosa
Corynebacterium
Candida albicans
10. Koplik’s spots develop during infection with ________
rubella virus.
Staphylococcus aureus.
Streptococcus pyogenes.
Varicella-zoster virus.
measles virus.
11. Inflammation of the eye conjunctiva (bacterial conjunctivitis) can be caused by _______
Staphylococcus aureus
Streptococcus pneumoniae
Neisseria gonorrhoeae
Pseudomonas aeruginosa
All of the above
12. Gas gangrene is most likely associated with infection with _______
Staphylococcus aureus.
Clostridium perfringenes.
Streptococcus pneumoniae.
Neisseria gonorrhoeae.
Pseudomonas aeruginosa.
13. Hyperbaric oxygen may be useful in treating infections caused by _______
Gram-positive bacteria.
Gram-negative bacteria.
anaerobic bacteria.
yeast.
viruses.
14. What is the leading cause of preventable blindness in the world?
Chlamydia trachomatis
Haemophilus influenzae
Neisseria gonorrhoeae
Staphylococcus aureus
Streptococcus pneumoniae
15. The disease shingles is caused by the same virus that causes ________
measles.
smallpox.
German measles.
chickenpox.
hepatitis.
16. When is antibiotic used to treat the eyes of newborn infants?
The mother has gonorrhea.
The mother has genital herpes.
Neisseria gonorrhoeae is isolated from the newborn’s eyes.
Antibiotic is always used.
The mother has a history of multiple sex partners.
17. The virus used to immunize individuals against smallpox causes ________
chickenpox.
measles.
cowpox.
molluscum contagiosum.
warts.
18. Human papillomavirus causes ________
chickenpox.
measles.
molluscum contagiosum.
warts.
cowpox.
19. Tumorlike, light pink painless growths on the skin are probably the result of infection with ________
cowpox.
molluscum contagiosum virus.
measles virus.
Human papillomavirus.
Epidermophyton floccosum.
20. Ringworm infection caused by Tinea can cause infections of the ________
groin.
nails.
scalp.
beard area.
All of the above
