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Your 38-year-old male patient has been injured in an assault. He has several facial lacerations and a large knot on his head. Bystanders say that he was thrown over a large table and landed on his head and shoulder. As part of your scene size-up and primary assessment, you should:

A) immobilize his cervical spine. B) wait for ALS to treat the patient. C) complete an initial set of vital signs. D) splint any other bone or joint injuries.

Which of the following refers to the gas exchange across the alveolar-capillary membrane?

A) Expiration B) Profusion C) Ventilation D) Perfusion