In myelinated axons the voltage-regulated sodium channels are concentrated at the nodes of Ranvier
Indicate whether the statement is true or false
TRUE
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Recommended daily allowances are government-established values for nutrient intake that are used for food planning and labeling
Indicate whether this statement is true or false.
Which of the following describes how bones are innervated?
A) The periosteum, endosteum, medullary cavity, and epiphyses are innervated by sensory nerves. B) The periosteum and endosteum are innervated by sensory nerves. C) Only the endosteum, marrow cavity, and epiphyses are innervated. D) Bones are not innervated. E) Only the periosteum is innervated.
At a vesicular synapse the neurons communicate by
A) communicating junctions. B) internodes. C) nodes. D) neurotransmitters. E) terminal arborizations.
Which portion of a reflex arc is the only portion that is found entirely within the CNS?
A. The motor neuron B. The receptor C. The effector D. The integration center E. The sensory neuron