TTU ZOOL 2403 EXAM 3 CERTIFICATION
EVALUATION ACCURATE QUESTIONS
GRADED A PLUS
●● 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
-used for daylight vision
-color vision
-used for central vision
--found in the retina
●● what layer of the eye is the choroid located?.
Answer: the middle layer
●● what layer of the eye is the sclera located in ?.
Answer: outer layer
●● what layer of the eye is the ciliary body located?.
Answer: middle layer
EVALUATION ACCURATE QUESTIONS
GRADED A PLUS
●● 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
-used for daylight vision
-color vision
-used for central vision
--found in the retina
●● what layer of the eye is the choroid located?.
Answer: the middle layer
●● what layer of the eye is the sclera located in ?.
Answer: outer layer
●● what layer of the eye is the ciliary body located?.
Answer: middle layer
