Olfaction Anatomy: Figure 15. Olfactory epithelium: Olfactory receptor cells (sensory bipolar neurons) with cilia - chemoreceptors Supporting cells Basal (stem) cells Olfactory glands Axons of olfactory nerves (Cranial Nerve I) Penetrate through olfactory foramina of cribriform plate of ethmoid bone Olfactory bulb – synapse between olfactory neurons and mitral cells occurs here Mitral cells Olfactory tract (axons of mitral cells) to olfactory cortex in temporal lobe of cerebrum
Gustation Anatomy: Figure 15. Papillae – Vallate (posterior) Foliate (sides) Fungiform (scattered over surface) Filiform (no taste buds/used for licking) Taste Bud Anatomy: Gustatory epithelial cells (receptors) with microvilli - chemoreceptors Microvilli extend into taste pore Basal (stem) cells Supporting cells
Multiple sensory neurons associated with gustatory receptor cells Axons of Cranial Nerves VII (Facial), IX (Glossopharyngeal), X (Vagus) to gustatory cortex in insula lobe of cerebrum (Note: your text indicates parietal lobe)
5 Basic Tastes – Sweet, Salty, Sour, Bitter, Umami
