When free radicals previously produced by the interaction of radiation with water molecules act on a molecule such as DNA, the damaging action of ionizing radiation is indirect in the sense that the radiation is not the immediate cause of injury to the macromolecule. What is the immediate cause of this damage?
a. Excitation of the atoms of the biologic macromolecules
b. Enzymes released from biologic macromolecules
c. The recombining of a positively charged water molecule with an electron
d. The free radicals produced by the interaction of radiation with water molecules
d. The free radicals produced by the interaction of radiation with water molecules
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When lung compliance is reduced by half, how will time constants be affected?
A. The time constants will double B. The time constant will be reduced by half C. The time constant will increase to four times the original D. The time constant will be reduced to one-fourth of the original
The ICD-10-PCS code for percutaneous biopsy of left breast is ________
Fill in the blank(s) with correct word
The Administrative category of the CMA (AAMA) and RMA (AMT) examinations covers _______
a. anatomy and physiology b. laboratory procedures c. oral and written communication d. medical law and ethics
A trauma patient is admitted to ICU with an expanding subdural hematoma. Which of the following changes would you expect to see in the monitored intracranial pressure (ICP)?
A. decreased P2 waveform component B. decreased ICP waveform amplitude C. loss of clear P1 waveform component D. decreased mean intracranial pressure