A&P 1: Ch 34 Smell and Taste
Substances that stimulate taste cells bind with ____________ sites on the surfaces of taste hairs
Receptor
Olfactory sensations usually fade rapidly as a result of _________________
Sensory adaptation
A chemical would be considered ________________ if a person lacks a particular receptor site on the cilia of the olfactory neurons
Odorless
Receptor cells for taste are located a. Only on the tongue b. On the tongue, oral cavity, and pharynx c. In the oral cavity except the tongue d. On the tongue and nasal passages
On the tongue, oral cavity, and pharynx
Salt receptors are mainly stimulated by ionized inorganic _____________
Salts
Sour receptors are mainly stimulated by _____________
Acids
Sour sensations are produced from a. Acids b. Sugars c. Ionized inorganic salts d. Alkaloids
Acids
Alkaloids usually have a _____________ taste
Bitter
What type of receptors are smell and taste dependent on?
Chemoreceptors
The distal ends of the olfactory neurons are covered with hairlike ______________
Cilia
The axons of olfactory receptors pass through small openings in the _______________ of the ethmoid bone
Cribiform plate
True or False? Olfactory nerves are located in the foramina of the inferior nasal concha
False
The olfactory interpreting centers are located deep within the temporal lobes and at the base of the _________ lobes of the cerebrum
Frontal
The facial, ________________, and vagus cranial nerves conduct impulse related to the sense of taste
Glossopharyngeal
Taste interpretation occurs in the __________ of the cerebrum
Insula
Taste is interpreted in the __________________ of the cerebrum
Insula
Which of the following is not considered a recognized taste? a. Mint b. Salt c. Sweet d. Umami
Mint
Before gaseous substances can stimulate the olfactory receptors, they must be dissolved in __________ that surrounds the cilia
Mucus
The sweet sensation is produced from ____________
Sugars
What are the five recognized taste categories?
Sweet, Sour, Bitter, Umami, Salt
Where are taste receptor cells located?
Taste buds
Where are taste receptors found?
Taste buds - Found on the surface of the tongue
The ___________ of a taste cell are its sensitive part
Taste hairs
The opening to a taste bud is called a _______________
Taste pore
Olfactory interpretation centers are located a. Oral cavity b. Inferior nose c. Temporal and frontal lobes of the cerebrum d. Brainstem
Temporal and frontal lobes of the cerebrum
What must happen in order to detect an odor?
The molecules must first dissolve in the mucus before they bind to the receptor cites of the cilia. This results in an action potential over the olfactory neurons
Where are smell receptors found?
The nasal cavity and a portion of the nasal septum
What is olfaction?
The sense of smell
What is gustation?
The sense of taste
True or False? The facial, glossopharyngeal, and vagus cranial nerves conduct impulses from taste receptors to the brain
True
