Question

The most frequently used portal of entry for pathogens is the

Answer 1

Mucosal surfaces of respiratory and gastrointestinal tract

Step-by-step explanation:

A portal of entry is an avenue through which pathogenic microbes can have access to its host tissue. Since the pathogens are from the external environment, the portal of entry must be a site connected to the external.

Surfaces of the mucous membranes like respiratory tract, gastrointestinal tract etc. links the external and internal environment, hence, they are the most employed portals of entry by pathogens.

Also, the respiratory and gastrointestinal tract are vulnerable portals of entry because particles comprising of microbes are constantly taken in via the nose and mouth respectively.

Answer 2

The respiratory tract, trough broken skin, mucous membranes and catheters and tubes.

Step-by-step explanation:

A pathogen or germ is an infectious agent that produces diseases. A portal of entry is the way a germ can enter into a new being´s body. The most common portals of entry for an infectious agent are broken skin such as cuts, scrapes, puncture wounds, bites, and burns. Mucous membranes could be found in respiratory, gastrointestinal and genitourinary tracts, as the same as the conjunctiva of the eye. Respiratory pathogens can enter through mucous membranes and can be released during coughing and sneezing.