Anatomy Questions due 2/12/12
1. Name the six types of eye muscles.
2. Name the functions of each type of eye muscle.
3. What is the purpose of the pupil?
4. What is the purpose of the cornea?
5. Explain the path in which light enters through the eye?
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1. Superior rectus, inferior rectus, superior oblique, lateral rectus, medial rectus, inferior oblique
2. Medial rectus-turns eye in towards the nose
Superior rectus-allow eyes to look up and turn inward and rotate
Superior oblique-controls movement of eye down and out from midline, rotates eye in socketvkb
Lateral rectus-turns eye outward, away from the nose
Inferior rectus-allows eye to look down and to turn inward and rotate
Inferior oblique-responsible for tilting the eye out and raising the eye
3. Pupil is the whole in the eye that allows light to come in
4. The cornea is responsible in part for refracting light.
5. Enters through pupil, refracted by lens to be focused on the retina, then photoreceptors pick up the light and convert it into a nerve impulse, nerve impulse travels up optic nerve and into brain to be interpreted
1. Superior oblique; Rotates eye downward and away from midline.
2 .Inferior oblique; Rotates eye upward and away from midline.
3.Suoerior Rectus; Rotates eye upward and towards midline.
4. Inferior Rectus; Rotates eye downward and away from midline.
5. Lateral Rectus; Rotates eye away from midline.
6. Medial Rectus; Rotates eye toward midline.
3. The pupil is the circular opening in the center of iris. It controls the intensity of light to enter the retina.
4. Cornea acts as the eye’s outermost lens. It functions like a window that controls and focuses the entry of light into the eye.
5. Light first enters through the cornea and enters the pupil and reaches to the optic nerves to optic chiasama, optic tratcs then to thalamus and opic radiations and finally reaches to the visual cortex of the occipital lobes.
Samuel Jobe
1. inferior rectus and oblique, superior rectus and oblique, medial rectus, lateral rectus
2. inferior rectus: rotates eye downward and toward midline.
inferior oblique: rotates eye upward and away from midline.
superior rectus: rotates eye upward and toward midline.
superior oblique: rotates eye downward and away from midline.
lateral rectus: rotates eye away from midline.
medial rectus: rotates toward midline.
3.it allows for light to enter the retina.
4. the cornea refracts light and covers the iris, pupil, and anterior chamber.
5. light strikes the cornea and passes through a fluid filled chamber behind it to reach the iris and pupil. The light will pass through the pupil to the lens.
1. Inferior oblique, inferior rectus, superior oblique, superior rectus, medial rectus, lateral rectus.
2. Inferior oblique- tilts the eye at angle
Inferior rectus- look down
Superior rectus- look up
Superior oblique- rotates
Lateral rectus- inside
Medial rectus- outside
3. To control the amount of light in the eye
4. The cornea helps protect the eye
5. A ray of light strikes the cornea, and passes through a fluid filled chamber behind it to reach the iris and pupil. The light will pass through the pupil to the lens, which turns the image upside down and focuses it on the back of the eyeball, the retina, and to the cerebrum in the brain to the optic nerve, where the image will be turned right side up.
1. superior oblique, superior rectus, lateral rectus, medial rectus, inferior oblique, inferior rectus.
2.superior oblique-depresses eye, turns it laterally
superior rectus- elevates muscle of upper eye, allows eye to look up and helps eye turn inward
lateral rectus- turns eye outward, away from nose
medial rectus- moves eye horizontally
inferior oblique- tilts eye outward, raising the eye
inferior rectus- allows eye to look downward but helps eye turn inward and rotate
3. The pupil’s purpose is that it controls the light that enters the eye.
4. The cornea’s purpose is that it protects the eye, it is the transparent covering the covers the iris and pupi.
5. the light that enters the eye through the cornea, then through the pupil which allows the amount of light and is the hole of the iris, where the light is refracted by the lens.
1. superior rectus, inferior rectus, lateral rectus, medial rectus, superior olbique, and inferior oblique
2. elavation, depression, abduction, adduction, intorison, and extorsion
3. To control the amount of light entering the eye. I.e. in dark the pupil dilates and in bright conditions it constricts, preventing retinal damage.
4. The cornea provides a physical barrier that shields the inside of the eye from germs, dust, and other harmful matter. It shares this protective task with the sclera (the white of the eye).
5. A ray of light strikes the cornea, and passes through a fluid filled chamber behind it to reach the iris and pupil. The light will pass through the pupil to the lens, which turns the image upside down and focuses it on the back of the eyeball, the retina, and to the cerebrum in the brain via the optic nerve, where the image will be turned right side up.
1. Medial rectus, inferior rectus, superior rectus, lateral rectus, superior oblique, and inferior oblique
2. Medial rectus- rotates eye toward midline
inferior rectus- rotates eye downward and toward midline
superior rectus- rotates eye upward and toward midline
lateral rectus- rotates eye away from midline
superior oblique- rotates eye downward and away from midline
inferior oblique- rotates eye upward and away from midline
3. the pupil allows light to enter the eye
4. refracts light together with the lens
5. light hits the cornea and passes through a fluid filled chamber to reach the iris and pupil
1. Lateral, medial, superior, and inferior rectus, and superior and inferior obliques.
2. Medial and lateral rectus muscles move the eye inward toward the nose. The superior rectus muscle moves the eye upward and toward the nose, whereas the inferior rectus muscle turns the eye downward and away from the nose. The oblique muscles both move the eye away from the nose; the superior, upward, and inferior, downward.
3. It controls the amount of light that enters the eye.
4. The cornea mainly focuses the light that enters the eye. It also has a small role in protecting the eye.
5. Light enters through the pupil and is beamed toward the retina.
1. Superior Oblique, Inferior Oblique, Superior Rectus, Inferior Rectus, Medial Rectus, Lateral Rectus
2. SO- Moves the eye away from the nose
IO- Moves the eye away from the nose
SR- Moves the eye upward
IR- Moves the eye upward
MR- Moves the eye inward toward the nose
LR- Moves the eye inward toward the nose
3. Controls the amount of light thay enters the eye
4. Help protect the eye
5. A ray of light hits the cornea, and passes through a fluid filled chamber to reach the iris and pupil. It passes through the pupil to the lens and turns the image upside down and focuses it on the back of the eyeball, the retina, and the cerebrum in the brain where the image is turned right side up.
1. The medial rectus, lateral rectus, superior rectus, superior oblique, the inferior rectus, and inferior oblique are the 6 types of eye muscles.
2. The medial rectus: helps the eye turn inward. The lateral rectus helps the eye turn outward. The Superior rectus helps the eye turn upward, the inferior rectus helps the eye look downward, the superior oblique helps the eye rotate in its sockets and look down and out, and the inferior oblique helps the eye turn in place and elevate.
3. The purpose of the pupil is to control the amount of light entering the eye and dilates and constricts depending on how much light enters the eye.
4. The purpose of the cornea is to provide a barrier that protects the inside of the eye from germs, dust, and other dangerous things that could cause harm to the eye. The cornea also refracts light and is used as the eyes outer lens.
5. The path in which light enters through the eye is it first hits the cornea and passes through the aqueous humor to the pupil, then to the lens, vitreous humor to the photoreceptors to the optic disc and then eventually travels to the occipital lobe of the brain.
1. Superior Rectus, Superior Oblique, Lateral Rectus, Medial Rectus, Inferior Oblique, Inferior Rectus.
2. SR- rotates eye up, SO- rotates eye up and away from the midline, LR, rotates eye away from midline, MR- rotates eye towards midline, IR- rotates eye downwards, IR- rotates eye away from midline and down.
3. The purpose of the pupil is to change to allow the correct amount of light in for different light conditions.
4. The purpose of the cornea is to be transparent and allow an image to enter the eye and light to be able to go through the pupil.
5. Light enters the eye through the Cornea, then through the pupil, then the lens, then through the vitreous humor to the retina.
1. Superior oblique, superior rectus, Inferior rectus, Inferior Oblique, medial rectus, lateral rectus
2. (in coordination with above) Move eye down and allow rotation, moves eye upward, moves eye downward, moves eye upward and rotates, moves eye towards midline, moves eye away from midline
3. The pupil allows light into the eye
4. The corea allows light to penetrate the pupil, it serves as a window
5. Light first enters through the cornea, through the pupil to the lens where it’s focused, then the retina translates the image into a message, then it goes through the optic nerve to the brain
1. The six types of eye muscles are the medial rectus, the lateral rectus, the superior rectus, the inferior rectus, the superior oblique, and the inferior oblique.
2. The medial rectus moves the eye towards the midline. The lateral rectus moves the eye away from the midline. The superior rectus moves the eye upward towards the midline. The inferior rectus moves the eye downward towards the midline. The superior oblique moves the eye downward away from the midline. The inferior oblique moves the eye upward away from the midline.
3. The pupil controls the amount of light entering the eye.
4. The cornea shields the eye.
5. Impulses are carried from the rod or cone cells to the optic nerve which then sends the impulse to the brain.
1. superior rectus, inferior rectus, medial rectus, superior oblique, inferior oblique, lateral rectus.
2. superior rectus: allows the eye to look up
Inferior rectus: allows eye to look downward
medial rectus: turns the eye in toward the nose
Superior oblique: rotates the eye
inferior oblique: tilting the eye
lateral rectus: turns the eye outward
3. controls amount of light entering the eye and prevents retinal damage
4. acts as the eye’s outermost lens which controls focus
5. When light hits the cornea, it bend-or retracts-the incoming light onto the lens. The lens then refocuses that light into the retina that starts the translation of light into vision
1. Superior rectus, inferior rectus, medial rectus, lateral rectus, superior oblique, inferior oblique
2. Rectus – holds the eye in place and moves the eye up and down, medial/lateral rectus – moves the eye toward and away from the midline, obliques – control diagonal and sideways movement
3. It lets in the light from projected images
4. The cornea protects the surface of the eyeball and also keeps light from escaping the back of the eyeball
5. Light enters through the pupil, gets focused by the lens, and projected on the back of the retina, and then sent to the brain via electric impulse
1. The six types of eye muscles include: Medial rectus, superior rectus, superior oblique, lateral rectus, inferior rectus, and inferior oblique.
2. Superior rectus: rotates eye upward and toward midline, inferior rectus: rotates eye downward and toward midline, Medial rectus: rotates eye toward midline, lateral rectus: rotates eye away from midline, superior oblique: rotates eye downward and away from midline, and inferior oblique: rotates eye upward and away from midline.
3. The pupil is the opening in iris through which light enters the eye.
4. The cornea is the transparent anterior portion of the outer layer of the eye wall.
5. Light goes through the retina then optic nerve. The retina has rods and cones which change it into a signal to send through the optic nerve to the brain.
1. lateral rectus, medial rectus, superior rectus, inferior rectus, inferior oblique, superior oblique
2. lateral rectus- rotates the eye away from the nose. medial rectus- rotates the eye towards the nose. superior rectus- rotates the eye upward. inferior rectus- rotates the eye downward. superior oblique- depresses the eye and aids in roatation. inferior oblique- raises the eye and aids in rotation
3. to let light into the retina to be interpreted.
4. to let light into the pupil
5. it enters first through the cornea and then through the pupil to the retina.
1.medial & lateral rectus muscles, the superior & inferior rectus muscles, and the superior & inferior oblique muscles.
2.medial rectus —moves the eye inward, toward the nose
lateral rectus —moves the eye outward, away from the nose
superior rectus —primarily moves the eye upward,secondarily rotates the top of the eye toward the nose ,tertiarily moves the eye inward
inferior rectus —primarily moves the eye downward ,secondarily rotates the top of the eye away from the nose,tertiarily moves the eye inward
superior oblique —primarily rotates the top of the eye toward the nose (intorsion)
inferior oblique -primarily rotates the top of the eye away from the nose
3.To control the amount of light entering the eye. I.e. in dark the pupil dilates and in bright conditions it constricts, preventing retinal damage.
4.When light strikes the cornea, it bends–or refracts–the incoming light onto the crystalline lens.
5.A ray of light strikes the cornea, and passes through a fluid filled chamber behind it to reach the iris and pupil. The light will pass through the pupil to the lens, which turns the image upside down and focuses it on the back of the eyeball, the retina, and to the cerebrum in the brain via the optic nerve, where the image will be turned right side up.
1. Superior rectus, Superior oblique, Inferior rectus, Superior oblique, lateral rectus, medial rectus
2. Sup. rectus- turns eye upward, Sup. oblique- turns eye up, Inf. rectus- turns eye down, Inf. oblique- turns eye down, Lat. rectus- turns eye outward, Med. rectus- turns eye inward
3. To control the amount of light entering the eye.
4. The cornea refracts light
5. Light enters the eye through the pupil, then the lens, and enters the retina where the photoreceptors analyzes the light which is then interpreted by the brain.
1. Inferior Rectus, Superior Rectus, Inferior Oblique, Superior Oblique, Medial Rectus, and Lateral Rectus.
2. Inferior Rectus- Pulls the eye downward and rotates towards the midline
Superior Rectus- Pulls the eye upward and rotates towards the midline
Inferior Oblique- Pulls the eye upward and rotates away from the midline
Superior Oblique- Pulls the eye downward and rotates away from the midline
Medial Rectus- Pulls the eye towards the nose
Lateral Rectus- Pulls the eye away from the nose and body
3. The pupil helps control the amount of light that enters the eye, by constricting and dilating. This aids in vision and helps protect the eye from being exposed to too much light.
4. The cornea helps protect the front of the eye from damage and also helps to bend light and aid in vision.
5. Light first passes through the cornea and is refracted through the lens. Then the refracted image is transmitted upside down to the retina. Their the photoreceptors transmit the image to the optic disc and nerve. The image travels as impulses through the optic nerve to the brain, where the brain switches the image to right side up.
1. Superior oblique, inferior oblique, lateral rectus, medial rectus, inferior rectus, superior rectus.
2. SO moves the eye outward and downward, IO moves the eye outward and up, LR moves the eye away from the nose, MR moves the eye toward the nose, IR moves the eye inward and down, and SR moves the eye up and inward.
3. The pupil controls how much light enters the eye.
4. The cornea covers the iris and the pupil, and refracts light.
5. Light enters through the cornea and is modulated by the iris depending on brightness. It then passes through the lens which focuses the incoming light on the retina.The retina turns light into nerve impulses and sends it to the brain through the optic nerve.
1. Superior rectus, inferior rectus, medial rectus, lateral rectus, superior oblique, and inferior oblique.
2. Superior rectus-allows the eye to look us and helpts the eye turn inward towards the midline and rotate, Inferior rectus- allows the eye to look downward and turn the eye inward the midline. Medial rectus- turns the eye in toward the nose. Lateral rectus- turns the eye away from the midline. Superior oblique- rotates the eye in its socket. Inferior oblique- tilts the eye outward and raises the eye from the midline.
3. The purpose of the pupil is to control the amout of light entering the eye.
4. The purpose of the cornea is to refract light.
5. A ray of light strikes the cornea and goes through the iris and pupil. From there it goes through the lens, which turns images upside down and focuses it on the back of the eyeball, retina and to the cerebrum of the brain where the image is right side up.
1. superior rectus, inferior rectus, medial rectus, lateral rectus, superior oblique, inferior oblique
2. s.r.- looks up
i.r.- looks down
m.r.- looks outward
l.r.- looks inward
s.o.- looks up and in
i.o.- down and out
3. protects the eye and refracts light
4. focus light into the eye
5. through the pupil and cornea and off the iris to determine the color.
1. Medial rectus, lateral rectus, superior rectus, superior oblique, Inferior rectus, inferior oblique.
2.medial rectus- moves the eye inward, toward the nose
lateral rectus- moves the eye outward, away from the nose
Superior rectus- moves eye upward
Inferior rectus- moves eye downward
Superior oblique- rotates the top of the eye toward the nose and downward
Inferior oblique- rotates the top of the eye away from the nose and upward
3. To control the amount of light entering the eye.
4. protects the eye and refracts light as it enters the eye
5. A ray of light strikes the cornea, and passes through a fluid filled chamber behind it to reach the iris and pupil. The light will pass through the pupil to the lens, which turns the image upside down and focuses it on the back of the eyeball, the retina, and to the cerebrum in the brain via the optic nerve, where the image will be turned right side up.
1. Superior rectus, Inferior rectus, lateral rectus, medial rectus, superior oblique, inferior oblique.
2. Superior rectus – lets the eye look up, Inferior rectus – lets the eye look down, Lateral rectus – turns the eye outward, Medial rectus – turns the eye inward, Superior oblique – conrols movement of the eye up and down from the midline, Inferior oblique – tilts the eye and raises it.
3. allows you to see light
4. refracts light to help your eye focus
5. Light enters through the cornea then it passes through the pupil, and is focused by the lens on the retina. From the retina the light is converted into electrical impulses, conducted by the optic nerve and sent to the occipital cortex
1. The superior rectus, the inferior rectus,the lateral rectus, the medial rectus The inferior oblique, the superior oblique
2.(1) superior rectus – rotates the eye upward and toward the midline, (2) inferior rectus – rotates the eye downward and toward the midline, (3) medial rectus – rotates the eye toward the midline, (4) lateral rectus – rotates the eye away from the midline, (5) superior oblique – rotates the eye downward and away from the midline, and (6) the inferior oblique – rotates the eye upward and away from the midline.
3 It controls the amount of light entering the eye.
4.Its main purpose is to focus light into the eye.
5.A ray of light strikes the cornea, and passes through a fluid filled chamber behind it to reach the iris and pupil. The light will pass through the pupil to the lens, which turns the image upside down and focuses it on the back of the eyeball, the retina, and to the cerebrum in the brain via the optic nerve, where the image will be turned right side up
1. Lateral Rectus, Medial Rectus, infereior rectus, superior rectus, inferior oblique, superior oblique.
2. Lateral- Bring pupil away from midline. Medial- closer to the midline Inferior rectus- Depresses the eye Superior- Elevation Inferior oblique- rotates eyes Superior oblique- lateral rotation
3. Controls amount of light entering the eye.
4. focus light in to the eye
5. Goes through the cornea then to the iris and pupil.
1. Medial rectus, Lateral rectus, Superior rectus, Inferior rectus, Superior oblique, and Inferior oblique
2. Medial rectus- Moves the eye inward, toward the nose
Lateral rectus- Moves the eye outward, away from the nose
Superior rectus- Moves the eye upward
Inferior rectus- Moves the eye downward
Superior oblique- Rotates the top of the eye toward the nose
Inferior oblique- Rotates the rope of the eye away from the nose
3. The pupil allows light to enter the retina.
4. The cornea’s main purpose is to focus light into the eye.
5.Lights enters the eye by passing through the cornea, then through the lens where refraction occurs.
1. Lateral rectus Medial rectus Inferior rectus Superior rectus Inferior oblique Superior oblique
2 These movements appear to be initiated by a small cortical region in the brain.
3 To see and to protect the lens
4 The cornea is the transparent front part of the eye that covers the iris, pupil, and anterior chamber
5 The light enters through the pupil and lens and cornea.
1. Lateral rectus Medial rectus Inferior rectus Superior rectus Inferior oblique Superior oblique
2 These movements appear to be initiated by a small cortical region in the brain.
3 To see and to protect the lens
4 The cornea is the transparent front part of the eye that covers the iris, pupil, and anterior chamber
5 The light enters through the pupil and lens and cornea.
1.medial rectus. superior rectus. superior obliquie. lateral rectus. inferior rectus. infererior oblique.
2.medial rectus-rotates eye, superior rectus rotates eye upward. superior oblique rotates eyes downward. lateral rectus rotates eye away from midline and inferior rectus rotates eye downward.
3.to help shape the eyes.
4.the controll amount of light let in.
5.through the pupil and into the lens.
1. superior oblique, inferior oblique, superior rectus, inferior rectus, medial rectus, lateral rectus
2. medial- turns the eye inward towards the nose, inferior rectus- moves eye in downward direction, superior rectus-moves eye in upward direction, lateral rectus- turns eye away from the nose, superior oblique- suspends the eye, inferior oblique- pushes the eye up and outward
3. The pupil lets light into the eye
4. The cornea focuses the light.
5. light-cornea- lens/pupil- retina
1. Ciliary muscle, pupil, iris, retina, choroid, sclera.
2. Ciliary muscle – controls accommodation for viewing objects
pupil – allows light to enter the retina
Iris – controls the diameter and size of the pupil
Retina – lines the inner surface of the eye
choroid – provides oxygen and nourishment to the eye
sclera – protective outer layer of the eye
3. The pupil allows light to enter the eye.
4. The cornea covers the iris and pupil.
5. Light enters the eye through the pupil.
1. superior rectus – inferior rectus – lateral rectus – medial rectus – superior oblique – inferior oblique
2. elevation, adduction – depression, adduction – abduction – adduction – depression, abduction – elevation, abduction
3. to control the amount of light entering the eye.
4. to focus light into the eye.
5. a ray of light strikes the cornea, and passes through a fluid filled chamber behind it to reach the iris and pupil. The light will pass through the pupil to the lens, which turns the image upside down and focuses it on the back of the eyeball, the retina, and to the cerebrum in the brain via the optic nerve, where the image will be turned right side up.
1) inferior rectus, superior rectus, superior oblique, inferior oblique, lateral rectus,& medial rectus.
2) superior rectus-rotates eye upward toward midline. Inferior rectus-rotates eye downward toward midline. Medial rectus-rotates eye toward the midline. Lateral rectus- rotates eye away from midline. Superior oblique- rotates eye downward and away from midline. Inferior oblique- rotates eye upward and away from
midline.
3) control how much light comes in
4) white of the eye.
5) comes in through pupil then bounces around being controlled by how much by the choroid later then signals sent to the retina to the optic nerve then to the brain.