Gaps or interruptions in the myelin sheath are called
A. internodes.
B. tight junctions.
C. neurofilaments.
D. nodes of Ranvier.
E. gap junctions.
D
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In which of the following systems of measurement are units of the same variable related to each other by factors of ten?
A. the English system B. the metric system C. both A and B D. neither A nor B
Surgical cutting of the ductus deferens as a form of birth control is called a(n) ________
Fill in the blanks with correct word
Blocking of the normal transfer of vibrations through the middle ear is called ________.
Fill in the blank(s) with the appropriate word(s).
Astrocytes are NOT involved in ________.
A. formation the blood-brain barrier B. uptake of NT from a synapse C. stimulation or inhibition neurons D. formation of synapses in the CNS E. breakdown and engulfment of foreign material in the CNS