Cranial Nerve I Flashcards
cranial nerve I
olfactory nerve
primary sensory neurons are which type of cell?
bipolar cell
are olfactory neuron axons myelinated or unmyelinated?
unmyelinated (covered by schwann cells)
olfactory nerves pass through…
cribriform plate of ethmoid bone
secondary sensory neurons are which type of cell?
mitral cell
medial stria fibers cross the midline via
anterior commissure
lateral stria fibers carry information to
primary olfactory cortex; periamygdaloid and prepiriform area and the uncus (brodmann area 34)
olfactory tract fibers split into…
medial and lateral olfactory striae
anosmia
total loss of smell
how many neurons does it take to get to the cortex?
2 neurons
which sense does the thalamus not receive information from?
smell