ZOOL 2403 BOROS LECTURE EXAM 3
5 special senses - Answer -olfaction, taste, vision, hearing, equilibrium and balance
where is the olfactory pathway located? - Answer -on the temporal lobe of the cerebral
cortex
what is the pathway of odor the olfactory cortex? - Answer -odor goes to the olfactory
receptors, pass through cribriform plate of ethmoid bone, CN I synapses on neurons in
olfactory bulbs, whose axons form olfactory tract, and then goes to the olfactory cortex
gustatory (definition) - Answer -taste
Where are taste receptors located? - Answer -deep in the grooves of taste buds
what are the 6 primary taste sensations? - Answer -sweet, salty, sour, bitter, umami,
and water
describe the gustatory pathway - Answer -taste goes to taste receptors->CHs-
>medulla->gustatory cortex
What are the two nerves associated with the gustatory pathway? - Answer -Facial
nerve (CN VII): anterior 2/3 of tongue
Glossopharyngeal (CN IX): posterior 1/3 of tongue
how many layers of the eyeball are there - Answer -3
what kind of connective tissue makes up the outer layer of the eyeball? - Answer -
dense connective tissue
what kind of connective tissue makes up the middle layer of the eyeball? - Answer -
loose connective tissue layer
what kind of tissue makes up the inner layer of the eye? - Answer -nervous tissue layer
called retina
what is the sclera and where is it located in the eye?
,- Answer -white sheath that protects the eyeball; fibrous tunic that surrounds the eye
what is the cornea and where is it –
Answer -its the transparent anterior continuation of the sclera that protects the lens
its AVASCULAR (therefore it can be transplanted)
what is the choroid? - Answer
-layer surrounding the eye that contains blood vessels that supply oxygen and nutrients
to the tissues of the eye
what is the ciliary body , where and what does it do - Answer
, -anterior continuation of the choroid, contains smooth muscle (ciliary muscles) that
controls the shape of the lens for focusing an object
what is the iris and what is its primary function? –
Answer -the iris is smooth muscle surrounding the pupil, giving eye color and changes
pupil size to regulate amount of light entering/exiting eye
what is the retina? - Answer -inner layer of nervous tissue within the eye that contains
photoreceptors (rods and cones)
What are rods and where are they found? - Answer --receptors activated by dim light
-used for night vision
-black and white vision
-used for peripheral vision
--found in the retina
What are cones and where are they found? - Answer --receptors activated by bright
light
5 special senses - Answer -olfaction, taste, vision, hearing, equilibrium and balance
where is the olfactory pathway located? - Answer -on the temporal lobe of the cerebral
cortex
what is the pathway of odor the olfactory cortex? - Answer -odor goes to the olfactory
receptors, pass through cribriform plate of ethmoid bone, CN I synapses on neurons in
olfactory bulbs, whose axons form olfactory tract, and then goes to the olfactory cortex
gustatory (definition) - Answer -taste
Where are taste receptors located? - Answer -deep in the grooves of taste buds
what are the 6 primary taste sensations? - Answer -sweet, salty, sour, bitter, umami,
and water
describe the gustatory pathway - Answer -taste goes to taste receptors->CHs-
>medulla->gustatory cortex
What are the two nerves associated with the gustatory pathway? - Answer -Facial
nerve (CN VII): anterior 2/3 of tongue
Glossopharyngeal (CN IX): posterior 1/3 of tongue
how many layers of the eyeball are there - Answer -3
what kind of connective tissue makes up the outer layer of the eyeball? - Answer -
dense connective tissue
what kind of connective tissue makes up the middle layer of the eyeball? - Answer -
loose connective tissue layer
what kind of tissue makes up the inner layer of the eye? - Answer -nervous tissue layer
called retina
what is the sclera and where is it located in the eye?
,- Answer -white sheath that protects the eyeball; fibrous tunic that surrounds the eye
what is the cornea and where is it –
Answer -its the transparent anterior continuation of the sclera that protects the lens
its AVASCULAR (therefore it can be transplanted)
what is the choroid? - Answer
-layer surrounding the eye that contains blood vessels that supply oxygen and nutrients
to the tissues of the eye
what is the ciliary body , where and what does it do - Answer
, -anterior continuation of the choroid, contains smooth muscle (ciliary muscles) that
controls the shape of the lens for focusing an object
what is the iris and what is its primary function? –
Answer -the iris is smooth muscle surrounding the pupil, giving eye color and changes
pupil size to regulate amount of light entering/exiting eye
what is the retina? - Answer -inner layer of nervous tissue within the eye that contains
photoreceptors (rods and cones)
What are rods and where are they found? - Answer --receptors activated by dim light
-used for night vision
-black and white vision
-used for peripheral vision
--found in the retina
What are cones and where are they found? - Answer --receptors activated by bright
light
