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