Order Neurons And Pathways Of Special Senses Flashcards
List the olfactory pathway
Olfactory epithelium & olfactory nerves
Olfactory bulb
Olfactory tract & olfactory striae
Olfactory cortical areas
1st order neurone of the olfactory pathway and the cells involved
Olfactory epithelium
- Olfactory receptor cells
- Supporting cells
- Basal cells
2nd order neurone for olfactory pathway and cells involved
Cells synapsing in olfactory glomeruli
- Mitral cells
- Tufted cells
Unique feature of olfactory pathway
- Only 2 neurones
- No relay in thalamus - directly to cortex
1st order neurone of the taste pathway
Geniculate ganglion
Superior petrosal ganglion
Inferior ganglion
Of facial, glossopharyngeal and vagus nerves
2nd order neurone of the taste pathway
Nucleus tractus solitarius (in medulla oblongata)
3rd order neurone of the taste pathway
Thalamus
1st order neurone of the auditory pathway
Bipolar neurons of spiral ganglion (in cochlear nerve)
2nd order neurone of auditory pathway
Dorsal & ventral cochlear nuclei (in medulla oblongata)
3rd order neurone of the auditory pathway
Superior olivary (in pons)
1st order neurone of the vestibular pathway
Vestibular ganglion
2nd order neurone of vestibular pathway
Vestibular nuclei (in medulla oblongata)
1st order neurone of the visual pathway
Bipolar cells
2nd order neurone of the visual pathway
Ganglion cells
3rd order neurone of the visual pathway
Lateral geniculate nucleus (in thalamus)
What are the two types of visual pathway
Dorsal - calculates objects location
Ventral - creates a sense of perception
Describe the visual pathway
- Optic nerve
- Ganglion cells
- Optic chiasm
- Optic tract
- Lateral geniculate nucleus
- Optic radiation
- Primary visual cortex
4th order neurone of auditory pathway
Inferior colliculus (in midbrain)
5th order neurone of auditory pathway
Medial geniculate body (in thalamus)
3rd order neurone of the vestibular pathway
Thalamus
