The phrenic nerve consists of peripheral nerve roots ________ through ________
A) C-1; C-3
B) C-5; C-8
C) C-3; C-5
D) C-1; C-8
C
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When faced with danger, which component of the nervous system is immediately activated for basic survival?
A) Sympathetic B) Central C) Voluntary D) Parasympathetic
Oxygen concentrations below ________ will lead to unconsciousness and death.
A) 25% B) 20% C) 15% D) 10%
What is most effective antibody against viruses?
A) IgG B) IgM C) IgE D) IgA
For a lateral sacral projection, the
1. patient's legs are flexed. 2. midcoronal plane is aligned parallel with the imaging table. 3. posterior ribs and the posterior pelvic wings are aligned perpendicular to the imaging table. 4. longitudinal axis of the sacrum is aligned with the short axis of the collimated field. a. 1 and 3 only b. 2 and 3 only c. 1, 2, and 3 only d. 2 and 4 only