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FAST REVISION
Physiology
In the sympathetic nervous system, the pre-to-post ganglionic fiber ratio of 1:20 to 1:100 indicates that there are fewer postganglionic fibers than preganglionic fibers. This ratio suggests that each preganglionic neuron synapses with multiple po
Periodontics
A Gracey curette is correctly adapted when the lower shank is parallel with the tooth surface being scaled.
Radiology
In a panoramic radiograph, a smiling appearance of structures occurs if the patient's chin is tilted downward.