______________ is a disease that is characterized by the air sacs in the lung being either partially or totally collapsed.
A. Atelectasis
B. Asthma
C. Emphysema
D. Bronchospasm
Answer: A
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Pressures in the pulmonary circulation are lower than those in the systemic circulation because of what characteristic of the pulmonary circulation?
a. Higher resistance than the systemic circu-lation b. Less blood flow than the systemic circula-tion c. Lower resistance than the systemic circu-lation d. More blood flow than the systemic circu-lation
Which of the following bone classification describes a thin layer of cortical bone surrounding a core of low-density trabeclar bone?
A) I B) II C) III D) IV
Attachment to the tooth surface is also known as _____
a. bonding b. coalescing c. filling d. etching
Instruments considered "critical" should always
be disposed of according to EPA guidelines. be placed in the sharps container. be sterilized. be disinfected.