Which of the Following Is the Most Common Route of Lower

question 10

Multiple Choice

Which of the following is the most common route of lower respiratory tract infection?

• A) Aspiration of oropharyngeal secretions
• B) Inhalation of microorganisms
• C) Microorganisms spread to the lung via blood
• D) Poor mucous membrane protection

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Definitions:

Umbilical Cord

A flexible cord-like structure connecting a fetus to the placenta, supplying oxygen and nutrients while removing waste.

Placenta

An organ that develops in the uterus during pregnancy, providing oxygen and nutrients to and removing waste from the fetus through the umbilical cord.

Blood

A vital fluid in humans and animals that delivers necessary substances such as nutrients and oxygen to the cells and transports metabolic waste products away.

Placenta

An organ that develops in the uterus during pregnancy, providing oxygen and nutrients to growing babies while removing waste products from the baby’s blood.