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Microbiology of Skin and Eye Diseases

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Questions and Answers

What type of bacteria are typically found on the skin?

Gram-positive, salt tolerant (correct)

Gram-positive, salt intolerant

Gram-negative, salt intolerant

Gram-negative, salt tolerant

What is the role of the skin in the body?

Last line of defense

First line of defense (correct)

Third line of defense

Second line of defense

What prevents colonization of the skin by pathogens?

High pH and antibiotics

Low pH, lysozyme, sebum, and indigenous microflora (correct)

Ultraviolet light and ozone

Temperature fluctuations and humidity

What is a characteristic of infectious diseases?

Follow colonization of a body site by a pathogen (C) Signup and view all the answers

How many anatomical sites can be affected by infectious diseases?

One or more (C) Signup and view all the answers

What is not a characteristic of the skin's natural microbiota?

Pathogenic bacteria (A) Signup and view all the answers

What is the primary function of the eyelids?

To provide protection from trauma (C) Signup and view all the answers

What can cause fungal and protozoal infections of the cornea?

Organic material in the eye (C) Signup and view all the answers

What is the function of eye blinking?

To carry tears from the lacrimal gland to the lacrimal duct (D) Signup and view all the answers

What is keratitis?

A serious infection of the cornea (D) Signup and view all the answers

What is the function of tears?

To wash the eyes and help prevent infection (D) Signup and view all the answers

What is the function of the conjunctiva?

A major defense mechanism of the eye (B) Signup and view all the answers

What is the primary cause of eye infections in people who do not produce an adequate supply of tears?

Microorganisms (A) Signup and view all the answers

What type of bacteria is responsible for most cases of hordeola?

Staphylococcus aureus (B) Signup and view all the answers

What is the term for inflammation of the cornea?

Keratitis (D) Signup and view all the answers

What is the primary symptom of keratitis?

Eye pain (D) Signup and view all the answers

What is the common symptom shared by keratitis and conjunctivitis?

Mucopurulent discharge (D) Signup and view all the answers

What is the possible outcome of keratitis if left untreated?

Loss of vision (A) Signup and view all the answers