Portal of entry

Definition

The portal of entry is the site through which pathogens enter a host body to initiate infection. Common portals include mucous membranes, skin, and parenteral routes.

5 Must Know Facts For Your Next Test

1. Common portals of entry include respiratory tract, gastrointestinal tract, genitourinary tract, and broken skin.
2. The specific portal of entry can influence the disease's symptoms and severity.
3. Some pathogens have multiple portals of entry, while others are restricted to one.
4. Adherence mechanisms like fimbriae or pili often aid in establishing infection at the portal of entry.
5. Preventing pathogen entry at these portals is a key strategy in infection control.

Review Questions

Related terms

Pathogen:

An organism that causes disease.

Adherence Mechanisms: Structures or processes that allow pathogens to attach to host tissues.

Parenteral Route: A portal of entry involving breaks in the skin or mucous membranes due to cuts, bites, injections, or surgical procedures.