Host-Microbe Interaction Flashcards Preview

MS1 - Disease & Defense > Host-Microbe Interaction > Flashcards

Flashcards in Host-Microbe Interaction Deck (9):
1

Define infection.

(n.) the process whereby a microbe enters into a relationship with the host. It may or may not cause disease.

2

What is an infectious disease, and how does it differ from an infection?

An infectious disease is a disease caused by an infection with a microbe.Some infections are communicable; others are not communicable and are not transmitted from patient to patient.

3

Pathogens that affect all people equally are ________.

frank pathogens

4

Pathogens that affect immunocompromised hosts are termed _________.

opportunistic pathogens

5

Explain the distinction between mucous and mucus.

Mucus is a noun and refers to the substance secreted. Mucous is an adjective describing something (such as a "mucous membrane").

6

List Koch's four postulates of infectious disease.

(1) the microbe is found in characteristic lesions of the disease; (2) the microbe can be isolated and cultured in vitro from lesions; (3) the microbe can be injected into animals to mimic the disease; and (4) the specific microbes can be re-isolated from the animals

7

How is pathogenicity measured?

By examining the number of organisms required to be infectious in 50% of those inoculated (ID50), to produce disease in 50% of those inoculated (DD50), and to be lethal in 50% of those inoculated (LD50).

8

Macrophages that reside in the skin are called ________.

Langerhans cells

9

What is virulence?

The ability of a pathogen to cause disease in a host

Decks in MS1 - Disease & Defense Class (59):