BIOS252 Exam 3
Study online at https://quizlet.com/_a2ys39
1. Anatomy of the Outer ear:
ear -Tympanic membrane
-Auricle
-Auditory canal
Middle ear:
-Ossicles: Malleus, Stapes, Incus
-Auditory tube
Inner Ear:
Semicircular ducts
Vestibular nerve
Cochlear nerve
Cochlea
Vestibule
2. utricle and sac- responsible for static equilibrium and the sense of linear acceleration
cule function Utricle: forward or backward linear movement
Saccule: senses linear movement up and down
3. external auditory -passage leading through temporal bone to tympanic membrane
canal function -Produces Cerumen (earwax): blocks foreign particles, waterproofs, and keep
tympanic membrane pliable
4. cochlea function hearing
5. semicircular dynamic equilibrium (determining rotary motion of the head)
canals function
, BIOS252 Exam 3
Study online at https://quizlet.com/_a2ys39
6. Eye Anatomy Tunica fibrosa: outer
Sclera: dense, collagenous white of the eye
Cornea: transparent region of modified sclera in front of eye
Tunica vasculosa: middle
Choroid: Highly vascular, pigmented layer behind retina
Ciliary body: extension of choroid; muscular ring around lens, Supports lens and
iris, Secretes aqueous humor
Iris: color diaphragm controlling size of pupil
Lens: Changes shape to help focus light
Pupil: The hole located in the iris that changes size to allow different amounts of
light into the inner eye.
Tunica interna:
Retina: detection of light
7. Describe the -transparent region of modified sclera in front of eye
Cornea -refracts light more than lens does
-Light passing through center of the cornea is not bent
8. Describe the -patch of hair cells and supporting cells in the saccule and utricle
macula -Macula sacculi: lies vertically on wall of saccule
-Macula utriculi: lies horizontally on floor of utricle
9. Describe the Lens -Changes shape to help focus light
-Supported by ciliary body
-Rounded with no tension
-Flattened with pull of suspensory ligaments
10. Describe the Op- -No receptors where optic nerve exits retina(blind spot)
tic disc -Visual filling:
Brain fills in blind spot area
11. Describe the Pos- -between iris and lens
terior chamber -production and circulation of aqueous humor
Study online at https://quizlet.com/_a2ys39
1. Anatomy of the Outer ear:
ear -Tympanic membrane
-Auricle
-Auditory canal
Middle ear:
-Ossicles: Malleus, Stapes, Incus
-Auditory tube
Inner Ear:
Semicircular ducts
Vestibular nerve
Cochlear nerve
Cochlea
Vestibule
2. utricle and sac- responsible for static equilibrium and the sense of linear acceleration
cule function Utricle: forward or backward linear movement
Saccule: senses linear movement up and down
3. external auditory -passage leading through temporal bone to tympanic membrane
canal function -Produces Cerumen (earwax): blocks foreign particles, waterproofs, and keep
tympanic membrane pliable
4. cochlea function hearing
5. semicircular dynamic equilibrium (determining rotary motion of the head)
canals function
, BIOS252 Exam 3
Study online at https://quizlet.com/_a2ys39
6. Eye Anatomy Tunica fibrosa: outer
Sclera: dense, collagenous white of the eye
Cornea: transparent region of modified sclera in front of eye
Tunica vasculosa: middle
Choroid: Highly vascular, pigmented layer behind retina
Ciliary body: extension of choroid; muscular ring around lens, Supports lens and
iris, Secretes aqueous humor
Iris: color diaphragm controlling size of pupil
Lens: Changes shape to help focus light
Pupil: The hole located in the iris that changes size to allow different amounts of
light into the inner eye.
Tunica interna:
Retina: detection of light
7. Describe the -transparent region of modified sclera in front of eye
Cornea -refracts light more than lens does
-Light passing through center of the cornea is not bent
8. Describe the -patch of hair cells and supporting cells in the saccule and utricle
macula -Macula sacculi: lies vertically on wall of saccule
-Macula utriculi: lies horizontally on floor of utricle
9. Describe the Lens -Changes shape to help focus light
-Supported by ciliary body
-Rounded with no tension
-Flattened with pull of suspensory ligaments
10. Describe the Op- -No receptors where optic nerve exits retina(blind spot)
tic disc -Visual filling:
Brain fills in blind spot area
11. Describe the Pos- -between iris and lens
terior chamber -production and circulation of aqueous humor
