CN 1 Flashcards
(28 cards)
What kind of cells are primary sensory neurons?
Bipolar
Where is the olfactory nerve found?
Olfactory epithelium lining superior part of the nasal cavity
What covers the olfactory epithelium?
Mucus membrane
What are olfactory neurons supported by?
Supporting cells
What function as receptors?
Hairs
How many nerves are conveyed information into the olfactory bulbs?
10-20
Are olfactory neurons myelinated?
No
What are olfactory neurons covered by?
Schwann cells
Pathway of olfactory neurons
Olfactory bulb-> synapse on dendrites of mitral cells
What are formed at the synapses?
Synaptic glomeruli
___ are the secondary sensory neurons
Mitral cells
Where are cell bodies located?
Olfactory bulb
The olfactory bulb is also the ___
Nucleus of termination
Mitral cells relay information posterior via the ___
Olfactory tract
Where do the tract fibers split?
Anterior perforated substance
What do the fibers split into?
Medial and lateral olfactory striae
Medial striae fibers cross the midline via the ___
Anterior commissure
Where do the medial striae fibers cross to?
The opposite olfactory bulb
Do we segregate smell?
No
Lateral striae fibers carry information to the ___
Primary olfactory cortex
Where do lateral striae fibers land in the primary olfactory cortex?
Peramygdaloid and prepirifoxrm area, including the uncus (BA 34)
Lateral striae fibers land where in the secondary olfactory cortex?
Entorhinal area, parahippacampal gyrus (BA 28)
Receptor-> cortex takes how many neurons?
2
What is the structure that doesn’t have a synapse?
Thalamus
