Which imaging technique is used to diagnose osteoporosis?

A. Magnetic resonance imaging (MRI)
B. Computed tomography (CT)
C. Ultrasound
D. Dual-energy X-ray absorptiometry (DEXA)
E. Positron emission tomography (PET)


Answer: D

Anatomy & Physiology

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Answer the following statement true (T) or false (F)

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During the initial, depolarizing phase of the action potential, the voltage-gated Na+-channel is in which conformation?

a. closed but capable of opening b. open, or activated c. closed and not capable of opening d. activation gate open; inactivation gate closed e. activation gate closed; inactivation gate closed

Anatomy & Physiology