As Ventilatory Muscles, the Sternomastoids Do Which of the Following

question 67

Multiple Choice

As ventilatory muscles, the sternomastoids do which of the following?

• A)elevate the upper chest, increasing chest anteroposterior diameter
• B)elevate the ribs and decrease chest anteroposterior diameter
• C)increase lateral chest movement during inspiration
• D)lower the sternum, thus increasing chest anteroposterior diameter

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Definitions:

Continental Ice Sheet

A large mass of ice, including glaciers, that covers a large part of a continent.

Shoreline Glacier

A glacier that extends to the sea at its terminus, often calving icebergs into the water.

Glaciers

Large, slow-moving masses of ice that form from the accumulation and compaction of snow on mountains or near the poles.

Smooth Troughs

Gently sloping depressions or valleys often found on the ocean floor, formed by sedimentation or tectonic activities.