The Most Frequently Used Portal of Entry for Pathogens Is

question 7

Multiple Choice

The most frequently used portal of entry for pathogens is the

• A) Parenteral route.
• B) Mucous membranes of the respiratory tract.
• C) Mucous membranes of the gastrointestinal tract.
• D) Skin.
• E) All are used equally.

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Definitions:

External Urinary Sphincter

A muscular mechanism that controls the retention and release of urine from the bladder.

Ureteral Openings

The points at which the ureters, tubes that carry urine from the kidneys, connect to the bladder.

Urethral Sphincter

A muscle that controls the release of urine from the bladder.

Ureteral Valves

Flap-like structures in the ureters that prevent the backflow of urine from the bladder into the kidneys.