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| Laboratory 13 : Tract Systems II |
| Gustatory (Taste) Tract |
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 Previous Slide |
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Gustatory (Taste) Tract
It is important to note that:
- axons from rostral tongue first follow lingual branch of CN V, then switch to CN VII via corda tympani and enter brain with CN VII. Transmission is ipsilateral.
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Slide 91 : Telencephalon
- Fibers end in coronal gyrus (insular cortex)
- This region integrates taste and smell to create perception of flavor.
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Slide 75 : Telencephalon
- Other PBM collaterals synapse in amygdala – affective part of taste ("yummy!")
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Slide 64 : Midbrain-Diencephalon
- PBM collaterals to limbic system synapse in hypothalamus – physiological controls
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Slide 62 : Diencephalon
- PBM axons synapse in VPMpc; VPMpc axons project via cerebral peduncles & internal capsule to insular cortex
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Slide 38 : Rostral Medulla-Pons
- In rats, NTS axons synapse in medial parabrachial nucleus (PBM); no synapse here in primates
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Slide 26 : Middle Medulla Oblongata
- SA axons from taste buds enter via CN VII, IX, X toSolitary Tract (TS). Axons synapse in gustatory area of Solitary Tract Nucleus (NTS). NTS axons pass rostrally via medial lemniscus (in many species)
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Copyright © 2006 - University of Pennsylvania School of Veterinary Medicine, All rights reserved.
Faculty: Dr. Richard Miselis, Dr. Peter Hand
Students: Natalie Fickel V'12, Ryan Donahue V'09, Cara Catanese V’08, Rebecca Wolf V'06, Keith Javic V'03, Ken Bixel V'99, Russel Howe-Smith V'97
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