In October 2001 at the Site of the World Trade

question 24

Multiple Choice

In October 2001 at the site of the World Trade Center in New York City, fires were still burning from the terrorist attacks that had brought down the buildings. The greatest danger to the respiratory system was

• A)the odor.
• B)very small particles of debris.
• C)very large particles of debris.
• D)falling material from damaged buildings.

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Definitions:

Articular Cartilage

Hyaline cartilage covering the ends of bones within a synovial joint.

Lubricating Film

A thin layer of liquid or semi-liquid substance applied to surfaces to reduce friction and wear.

Double Layer

A double layer often refers to structures composed of two levels of material, which in biological contexts, could imply the phospholipid bilayer of cell membranes or protective coatings.

Joint Surface

The part of a bone that articulates with another bone, usually covered with cartilage to enable smooth movements.