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BIOS 252 Test 3
- Anatomy of the ear
–Answer Outer ear –Answer
-Tympanic membrane -Auricle -Auditory canal Middle ear –Answer
-Ossicles –Answer Malleus, Stapes, Incus -Auditory tube Inner Ear –Answer
Semicircular ducts Vestibular nerve Cochlear nerve Cochlea Vestibule
- utricle and saccule function
–Answer responsible for static equilibrium and the sense of linear acceleration Utricle –Answer forward or backward linear movement Saccule 1 / 3
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–Answer senses linear movement up and down
- external auditory canal function
- cochlea function
- semicircular canals function
- Eye Anatomy
–Answer -passage leading through temporal bone to tympanic membrane -Produces Cerumen (earwax) –Answer blocks foreign particles, waterproofs, and keep tym- panic membrane pliable
–Answer hearing
–Answer dynamic equilibrium (determining rotary motion of the head)
–Answer Tunica fibrosa –Answer outer Sclera –Answer dense, collagenous white of the eye Cornea –Answer transparent region of modified sclera in front of eye Tunica vasculosa –Answer middle Choroid –Answer Highly vascular, pigmented layer behind retina Ciliary body –Answer extension of choroid; muscular ring around lens, Supports lens and iris, Secretes aqueous humor 2 / 3
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Iris –Answer color diaphragm controlling size of pupil Lens –Answer Changes shape to help focus light Pupil –Answer The hole located in the iris that changes size to allow different amounts of light into the inner eye.Tunica interna –Answer
Retina –Answer detection of light
- Describe the Cornea
- Describe the macula
- Describe the Lens
- / 3
–Answer -transparent region of modified sclera in front of eye -refracts light more than lens does -Light passing through center of the cornea is not bent
–Answer -patch of hair cells and supporting cells in the saccule and utricle -Macula sacculi –Answer lies vertically on wall of saccule -Macula utriculi –Answer lies horizontally on floor of utricle
–Answer