The myelin sheaths of PNS neurons are produced by ________.
A. oligodendrocytes
B. Schwann cells
C. ependymal cells
D. leukocytes
Answer: B
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Conduction of action potentials along an axon is termed saltatory conduction because the action potential
A) Is dependent on the ions Na+ and K+ portions of salts. B) Appears to leap or jump from node to node. C) Is named after Johan Saltare, who first discovered it. D) Moves very rapidly down the axon.
Which of the following muscles is not a smaller muscle part of the of the levator ani muscle group that forms the pelvic floor?
A. Ischiococcygeus B. Anococcygeal C. Pubococcygeus D. Iliococcygeus
Metabolism is the sum of all of the chemical reactions within cells that release energy.
Answer the following statement true (T) or false (F)
Which medical imaging technique relies on the absorption of high-energy radiation and reveals dense tissues such as bone and teeth?
A. Positron emission tomography (PET) scan B. Sonography C. Computed tomography (CT) scan D. Magnetic resonance imaging (MRI) E. Radiography