Understanding about the defenses of the eye, you would predict that a person __________ would have a higher rate of eye infections
who has a problem producing tears
The main causative agent of gas gangrene is
Clostridium perfringens
S. pyogenes binds to plasminogen and then secretes ______ that creates plasmin that degrades tissue.
Streptokinase
Transmission of the pathogen causing leishmaniasis is by the
sand fly
All staphylococci can be differentiated from all streptococci because only staphylococci produce the enzyme _____ that is easily detected in the lab.
catalase
Human herpesvirus 6 (HHV-6) has all of the following characteristics except
it is a very rare form of herpesvirus
Transmission of tineas include
All of the choices are correct
Which of the following is the causative agent of tinea versicolor?
Malassezia furfur
Impetigo is caused by
Both S. aureus and S. pyogenes are correct
Protective features of the skin include all but
high PH
Which of the following is not true of cellulitis?
occurs in the epidermis
Cutaneous anthrax is
transmitted by contact
The organisms that cause ringworm, or tinea, use keratin protein as their substrate. This is why these infections:
are superficial mycoses
The integument includes all of the following except
surface capillaries
You had surgery on your shoulder, as a result of rotator cuff injury. The surgery went well, but when the cut area was sutured, bacteria entered into the open tissue. As a result, you now have an infection of deep tissue exhibiting redness, swelling, pain
Staphylococcus
Which of the following is not true of rubeola?
It is single-stranded non enveloped RNA virus
Necrotizing fasciitis is
associated with strains of Streptococcus pyogenus producing destructive enzymes and toxins
The swelling over a pore leading out of a hair follicle that has become clogged is called a/an
comedo
The smallpox vaccine uses the _____ virus.
vaccinia
Edward Jenner's work involved
all of the choices are correct
blisters
result from a separation of epidermis from dermis
Infections caused by Staphylococcus aureus include all of the following except
acne
Because of its symptomology, smallpox has been misidentifed as:
chickenpox
Which of the following is the most common form of transmission in cases of impetigo?
direct contact
The microbial pathogen associated with the development of acne is:
Propionibacterium acnes
If a person who has never been infected with the varicella-zoster virus comes in contact with a person who has shingles, they will come down with
chickenpox
Which of the following is mismatched?
tinea cruis- ringworm of the beard
Measles is also known as
rubeola
Oral lesions called Koplik's spots are seen in patients with
measles(rubeola)
This organism can infect deeper wound sites and produce exotoxins, enzymes, and gas that cause tissue and muscle necrosis:
clostridium perfringens
The toxin of Staphylococcus aureus strains that causes blisters and desquamation of skin in scalded skin syndrome is
exfoliative toxin
blood vessels are found in the
dermis and subcutaneous layers
All of the following pertain to measles(rubeola) except
transmitted by direct contact with the rash
Varicella-zoster virus
All of the choices are correct
Your child came home from daycare with an eye infection, and in a day has developed a yellowish discharge. You predict that this is a case of:
a bacterial conjunctivitis
Streptococcus pyogenes causes all of the following except
scalded skin syndrome
What material in skin cells provides protection from abrasions, water damage, and microorganism entry?
keratin
Rubella is
associated with congenital transmission causing miscarriage, deafness, and cardiac and mental defects
Chickenpox
all of the choices are correct
_____ is a chronic progressive disease of the skin and nerves caused by Mycobacterium leprae.
hansen's disease
Measles is described as a ______ skin lesion.
maculopapular
All of the following pertain to monkeypox except
symptoms include skin pocks, fever, and swollen lymph nodes.
Which of the following is not a causative agent of cutaneous mycoses?
Malassezia fyrfur
Which form of anthrax involves a black eschar on the skin?
cutaneous
Staphylococcus can be differentiated from Streptococcus by the
catalase test
Smallpox is a disease in which
fever, prostration, rash, and possible toxemia and shock occur
The causative agent of this febrile disease characterized by a rash can cross the placenta and cause serious fetal damage:
rubella
Your sister cut herself with a knife, and within a few days had a severe pus-producing infection of the hand. A day later, skin begins to come off, exposing muscle and other tissue below the skin. Predict what caused the severity of this infection.
The infectious agent produces exotoxins
Which of the following is not true of staphylococcal scalded skin syndrome (SSSS)?
split in skin occurs between the dermis and epidermis
Which is incorrect about warts?
are frequently cancerous