Mammography and bone densitometry are good examples of which of the following types of medical imaging
a) computed tomography
b) magnetic resonance imaging
c) ultrasound scanning
d) radionuclide scanning
e) low-dose radiography
Answer: e
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37) Which structure has pumps to remove calcium ions from the sarcoplasm to produce relaxation?
A) 6 B) 7 C) 1 D) 3 E) 2
Tactile and lamellated corpuscles are types of
A. nociceptors. B. photoreceptors. C. mechanoreceptors. D. thermoreceptors. E. chemoreceptors.
The force generated by a single muscle fiber can be increased by
A) increasing the asynchrony of recruitment only. B) increasing muscle length beyond optimal only. C) increasing frequency of action potentials and increasing muscle length beyond optimal only. D) increasing frequency of action potentials only.
The functional unit of muscle contraction is
A) the myosin cross-bridge. B) the muscle fiber. C) the muscle. D) the sarcomere.