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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