A neuron and all the muscle fibers it stimulates is called a ________
A) fascicle B) myoneural junction
C) synaptic cleft D) motor unit
Answer: D
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This bacteria releases a toxin that keeps muscles constantly contracted and causes tetanus
A) E. Coli B) Meningitis C) Staphylococcus aureus D) Clostridium tetani
Small, wandering cells that engulf cell debris and pathogens in the CNS are called
A) astrocytes. B) satellite cells. C) oligodendrocytes. D) microglia. E) ependymal cells.
Visual and hearing receptors are irreplaceable, but taste and olfactory receptors are continuously renewed
Indicate whether the statement is true or false
When the basilar membrane moves, what happens to the hair cells of the spiral organ?
A) They press against the spiral ganglion. B) They press against the basilar membrane. C) They press against the tectorial membrane. D) They press against the vestibular membrane. E) They push down into the ampulla.