BIOD 152 3.3 Olfactory and Gustatory Systems study guide
with complete solution!!
1.Olfaction: sense of smell
2.Olfactory nerves: CN 1, bipolar receptor cells found in the olfactory
epithelium on the roof of the nasal cavity; travel through the ethmoid
bone in a location called the cribriform plate. The dendrites extend
from the cell body to the surface of the epithelium where it terminates
in the olfactory bulbs, which are paired masses of gray matter
3.Olfactory tracts: carry information to the temporal lobes where the
signals are then interpreted in the primary olfaction area as smell
4.Why can dogs smell better than humans?: they have a much wider
range of detectable smells and, therefore, have a larger amount of
brain space dedicated to smell interpretation
5.Smell: a combination of a limited number of primary odors that are
detectable by the brain; can generally be separated to seven primary
odors
6.The seven primary odors: floral (roses), ethereal (dry-cleaning fluid),
camphor- ates (mothballs), musky (perfumes), peppermint (mint gum),
pungent (vinegar) and putrid (rotten eggs)
7.Gustatory system: responsible for the special sense of taste
8.T/F taste is a chemical sense: true, its receptors are activated by
chemical substances dissolved in saliva
9.Tongue: responsible for gripping food and repositioning it between
the teeth, forming it into a compact mass called a bolus
10.Apex of the tongue: located anteriorly
11.Root of the tongue: attached to the floor of the posterior surface of the
mouth
e
12.Frenulum: located on the inferior surface of the tongue along th
midline
13.Papillae: raised bumps on the tongue that help grip to 3
food, split in circumvallate, fungiform, and filiform types:
14.Which papillae contain taste buds?: circumvallate and fungiform
papillae
15.Taste buds: contain chemical receptors that are stimulated by the
chemical composition of food; found primarily on the tongue as well as
on the surface of the mouth and wall of the pharynx; formed by
gustatory cells and supporting cells
16.Gustatory cells: the chemoreceptor cells inside the taste buds; each
1/
3
with complete solution!!
1.Olfaction: sense of smell
2.Olfactory nerves: CN 1, bipolar receptor cells found in the olfactory
epithelium on the roof of the nasal cavity; travel through the ethmoid
bone in a location called the cribriform plate. The dendrites extend
from the cell body to the surface of the epithelium where it terminates
in the olfactory bulbs, which are paired masses of gray matter
3.Olfactory tracts: carry information to the temporal lobes where the
signals are then interpreted in the primary olfaction area as smell
4.Why can dogs smell better than humans?: they have a much wider
range of detectable smells and, therefore, have a larger amount of
brain space dedicated to smell interpretation
5.Smell: a combination of a limited number of primary odors that are
detectable by the brain; can generally be separated to seven primary
odors
6.The seven primary odors: floral (roses), ethereal (dry-cleaning fluid),
camphor- ates (mothballs), musky (perfumes), peppermint (mint gum),
pungent (vinegar) and putrid (rotten eggs)
7.Gustatory system: responsible for the special sense of taste
8.T/F taste is a chemical sense: true, its receptors are activated by
chemical substances dissolved in saliva
9.Tongue: responsible for gripping food and repositioning it between
the teeth, forming it into a compact mass called a bolus
10.Apex of the tongue: located anteriorly
11.Root of the tongue: attached to the floor of the posterior surface of the
mouth
e
12.Frenulum: located on the inferior surface of the tongue along th
midline
13.Papillae: raised bumps on the tongue that help grip to 3
food, split in circumvallate, fungiform, and filiform types:
14.Which papillae contain taste buds?: circumvallate and fungiform
papillae
15.Taste buds: contain chemical receptors that are stimulated by the
chemical composition of food; found primarily on the tongue as well as
on the surface of the mouth and wall of the pharynx; formed by
gustatory cells and supporting cells
16.Gustatory cells: the chemoreceptor cells inside the taste buds; each
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3
