11. Anatomy of Taste and Olfaction Flashcards
What type of taste buds are associated with the facial nerve and glossopharyngeal nerve, respectively?
The facial nerve is associated with fungiform taste buds.
The glossopharyngeal nerve is associated with the vallate and posterior foliate papillae.
What region of the brain integrates food related cues (smell, taste, texture) into the experience of food?
The orbitofrontal cortex
What are the functions of the lateral hypothalamus and hippocampus in relation to our sense of smell?
They drive feelings of hunger in response to the smell of food.
What ganglion does taste from the anterior 2/3 of the tongue use to enter the brainstem?
The geniculate ganglion.
What are the five layers to the olfactory bulb?
Axons from the anterior olfactory nucleus decussate via what structure?
The anterior commissure.
What symptoms will be seen in a lesion distal to the geniculate nucleus?
Definitely ipsilateral facial paralysis.
Maybe anterior 2/3 taste absence.
Hyposmia can be associated with what growth?
Nasal polyps
What are the six areas of the olfactory cortex?
What are the three terms relating to absence of taste, decreased taste, and distortions in taste?
Ageusia
Hypogeusia
Parageusia
What two branches of the facial nerve carry taste sensation for the facial nerve, and what areas do they correspond to?
Chorda tympani: fungiform on the anterior 2/3
Greater superficial petrosal nerve: Taste buds on the soft palate.
Where do the taste carrying primary afferents synapse in the brainstem?
The rostral solitary nucleus.
