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Identify the port of exit and mechanism for most diseases that are spread by droplet infection.

A.

Digestive system through contaminated feces

B.

Respiratory system by coughing or sneezing

C.

Central nervous system by contaminated cerebral spinal fluid

D.

Urinary system by contaminated urine

Answer and Explanation

The Correct Answer is B

A. Digestive system through contaminated feces:

This is the port of exit for diseases spread by the fecal-oral route (e.g., cholera, hepatitis A).

 

B. Respiratory system by coughing or sneezing:

Droplet infections (e.g., flu, COVID-19, common cold) are primarily spread through respiratory secretions expelled via coughing or sneezing.

C. Central nervous system by contaminated cerebral spinal fluid:

While CSF can carry infections (e.g., meningitis), it is not a common port of exit.

D. Urinary system by contaminated urine:

Urinary tract infections may be transmitted this way, but not typically through droplets.


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Related Questions

Correct Answer is D

Explanation

A. "These organs are used in digestion."

They are part of the lymphatic/immune system, not the digestive system.

B. "These organs assist with vitamin absorption."

Vitamin absorption is mainly the role of the intestines.

C. "These organs regulate electrolyte balance."

Electrolyte balance is regulated by kidneys and endocrine organs.

D. "These organs are for immunity."

The thymus matures T cells, the spleen filters blood and responds to infection, and lymph nodes trap and destroy pathogens.

Correct Answer is D

Explanation

A. Defense mechanism:

This is a general term, not specific to the immune system's ability to protect.

B. Protection:

Protection is a vague term and not the technical term used in this context.

C. Infection:

Infection refers to the invasion and multiplication of pathogens, not the body’s ability to fight them.

D. Immunity:

Immunity refers to the body’s specific ability to recognize, resist, and eliminate pathogens and foreign substances.

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