Friday, November 20, 2015
olfactory nerve
The olfactory nerve, or cranial nerve I, is the first of twelve pairs of cranial nerves. It is instrumental in the sense of smell. Derived from the embryonic nasal placode,
the olfactory nerve is capable of regeneration. The olfactory nerve is
sensory in nature and originates on the olfactory mucosa in the
anterosuperior nasal cavity. From the olfactory mucosa,
the nerve travels down the olfactory tract until it reaches the
olfactory bulb, where the fascicles of the olfactory nerve pass through
foramina on the cribriform plate,
which resides on the roof of the nasal cavity. These fascicles are not
visible on a cadaver brain because they are severed upon removal.
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