ZOOL 2403 Boros Exam 3 TTU Questions With Correct Answers

ZOOL 2403 Boros Exam 3 TTU Questions
With Correct Answers


5 cranial senses - CORRECT ANSWER✔✔-olfaction, taste, vision, hearing
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and equilibrium
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Olfactory pathway - CORRECT ANSWER✔✔-odor-olfactory receptors-
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olfactory nerves-olfactory bulbs-olfactory tracts-olfactory cortex
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Gustatory Pathway - CORRECT ANSWER✔✔-Taste buds are on the
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dorsal surface of the tongue
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taste-receptors- cranial nerves-medulla-gustatory cortex
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6 primary taste sensations - CORRECT ANSWER✔✔-sweet
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salty
bitter
sour
umami
water

,Cranial Nerves - CORRECT ANSWER✔✔-Facial nerve(CN VII)- anterior
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2/3s on tongue
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Glossopharyngeal (CN IX)- posterior 1/3 on tongue | | | | | |




3 Layers of the eyeball - CORRECT ANSWER✔✔-Outer layer
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Middle Layer |




Inner Layer |




Outer Layer of the Eye - CORRECT ANSWER✔✔-Dense connective tissue
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1. The Sclera- White sheath protecting eyeball.
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2. The Cornea- Transparent anterior continuation of the sclera that
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protects the lens. The cornea is avascular and can be transplanted.
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Middle Layer of the Eye - CORRECT ANSWER✔✔-Loose connective
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tissue
1. Choroid- Contains blood vessels that supply oxygenated nutrients to
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the tissue of the eye.
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2. Ciliary Body- Anterior continuation of the choroid, contains smooth
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muscle called ciliary muscles to control the shape of the lens for
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focusing on an object | | | |




3. Iris- Gives the eye color, it is composed of smooth muscle which
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change the size of the pupil to regulate the amount of light entering the
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eye.

,Inner Layer - CORRECT ANSWER✔✔-Nervous tissue layer
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1. Retina- contains photoreceptors associated with optic nerve(CN II)
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Rods and Cones are here
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Rods - CORRECT ANSWER✔✔-Receptors activated by dim light
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Used for night vision
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Black and White vision
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Used for peripheral vision
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Cones - CORRECT ANSWER✔✔-Receipts activated by bright light
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Used for daylight vision
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Color Vision |




Used for central vision
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Posterior Cavity - CORRECT ANSWER✔✔-Transparent Gel(99% Water)
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Fills 80% of the eyeball
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Helps keep the retina in place
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Not produced until you are 4-5 Yrs old
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Only 1/2 full by the time you're 70 Yrs old
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| It is not replaced.
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, Visual Pathways - CORRECT ANSWER✔✔-Light-Optic Receptors-Optic
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Nerves- Optic Chiasm-Thalamus-Visual Cortex
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Inferior Rectus - CORRECT ANSWER✔✔-Eye looking down- Oculomotor
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nerve(III)


Medial Rectus - CORRECT ANSWER✔✔-Eye looking medially-
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Oculomotor nerve (III) | |




Superior Rectus - CORRECT ANSWER✔✔-Eyes looking Up- Oculomotor
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nerve (III)
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Lateral Rectus - CORRECT ANSWER✔✔-Eye Looking laterally- abducens
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nerve (VI)
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Inferior Oblique - CORRECT ANSWER✔✔-Eye rolls, looking up, and
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laterally out-oculomotor nerve(III)
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Superior Oblique - CORRECT ANSWER✔✔-Eye rolls, looking down, and
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laterally out- trochlear nerve(IV)
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