Covers the gustatory organ on the tongue and oral cavity, starting with its components: taste buds, taste receptor cells for the five basic qualities, papillae with their four types, taste pores, supporting cells and salivary glands. It then follows the gustatory pathway, from tastant binding and membrane potential change through the facial, glossopharyngeal and vagus nerves to the nucleus of the solitary tract in the medulla and onward to higher centres.
Topic 184 of 236 in the MU Pleven syllabus for Anatomy Bones and Muscles (Medicine, Year 2). The free AceMed note covers it in 3 sections, about 267 words (2 min of reading), with 10 flashcards.
In this note
GUSTATION (Taste)
Components of the taste organ 8
Taste pathway:
GUSTATION (Taste)
_The structure of the taste organ involves specialized structures on the tongue and other areas of the oral cavity that are responsible for detecting taste.
Components of the taste organ 8
1. Taste buds: _the primary structures for detecting taste.
They are small clusters of cells located on papillae.
Each taste bud contains taste receptor cells
2. Taste Receptor Cells: ← pseudounipolar cells
Sensitive cells that detect specific taste qualities
↳ 5 (Sweet, salty, Sour, bitter & umami)
3. Papillae: _Structures on the tongue's surface that house taste buds.
↳ Types:
1.3 Fungiform (across the tongue's surface).
2.3 foliate (on the side of the tongue).
3.3 Circumvallate (at the back of " " )
4.3 filiform (the entire tongue surface).
↳ without taste buds !!
4. Taste pores: _small openings on the surface of the tongue
allow substances to enter the taste buds
5. Supporting Cells: support taste receptor cells.
6. Salivary Glands: producing saliva, which contain enzymes that break down food particles.
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