Chapter 14 Taste
Terms
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- What are retronasal olfactory sensations?
- sort of smelling through the mouth instead of the nose
- What are papillae?
- Filiform, fungiform, foliate, circumvallate
- What are the basic tastes?
- salty, sour, bitter, sweet, umami
- What inhibits bitterness?
- AMP
- What is the chorda tympani nerve?
- branch of cranial nerve VII that carries taste information from the anterior, mobile tongue
- What are filiform papillae?
- small structures on the tongue that provide most of the bumpy appearance;no taste function
- What are fungiform papillae?
- mushroom-shaped structures that are distrubuted mainly on the edges of the tongue
- What are foliate papillae?
- folds of tissue containing taste buds;rear of tongue
- What are circumvallate papillae?
- circular structures that form an inverted V on the rear of the tongue
- What is the insular cortex?
- part of cortex that first receives taste information
- What is the orbitofrontal cortex?
- receives info from the insular cortex
- How are neutransmitters sent for taste?
- Thalamus, gustatory cortex and orbitofrontal cortex
- What are labeled lines?
- theory of taste coding in which each taste nerve fiber carries a particular taste quality
- What is pattern coding?
- the pattern of response across the set of receptors gives percept
- What are nontasters?
- an individual born without receptors for the bitter componeet 6-n-propylthiouracil
- What are tasters?
- individual born with receptors for the bitter compound PROP (high density of fungiform)
- What is the specific hungry theory?
- idea the need for a nutrient will cause the body to crave it
- What is retronalsal olfaction?
- comes through the mouth, enters the nasal cavity through the back
- What is orthonasal olfaction?
- comes through the nostrils, enters the nasal cavity through the front