Anatomy Questions due Sunday 2/19
1. What is the difference between the rods and cones?
2. What is the purpose of photoreceptors?
3. Why is vitamin A good for the eyesight.
4. What is the difference between aqueous humor and vitreous humor?
5. What controls light refraction?
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1. Rods are responsible for detecting the dim lights only with black and white, and cones are responsible for detecting the bright lights with colors.
2. Photoreceptors convert light into signals that can stimulate biological processes.
3. Vitamin A forms the visual purple and visual violet of the rods and cones of the retina.
4. The vitreous humour is behind the lens and fills most of the eye and the aqueous humour is between the cornea , lens and iris.
5. Light refraction is controlled by energy.
1. Rods are the ones that help see in the dark and are mostly in the peripherals. Cones help see in the day and are mostly in the center of the vision.
2. They transfer visual signals to electrical signals for the brain.
3. Vitamin a makes a purple and violet color in the eye.
4.Aqueous is between the cornea and the lens and the vitreous is in the main part of the eye
5. The lens and the cilliary muscles shapes the lens the focus the light
1. The difference between rods and cones is that rod cells are responsible for detecting the dim lights only with black and white, and the cone cells are responsible for detecting the bright lights with colors
2. photoreceptors produce action potentials that are directed to the brain, produce receptor potentials, provide nourishment for both the lens and cornea, to focus light on the fovea
3. Vitamin A is good for eyesight because it helps prevent night blindness and prevents cataracts
4. The aqueous humor is found in between the lens and the cornea while the vitreous humor fills the main cavity of the eye behind the lens
5. The lens controls light refraction.
1. Rods respond to luminance, cones respond to colour.
2. to produce receptor potentials.
3. Vitamin A forms the visual purple and visual violet of the rods and cones of the retina.
4. the vitreous humor is inside the sclera and the aqueous humor is the liquid in the sclera.
5. The lens controls the bending of light rays to a focused image on the retina. The shape of the lens changes by a process called accomodation, which is carried out by the ciliary muscles.
1. Rods help you see at night and cones help you see during the day.
2. to nourish the cornea and the lens, and to focus light on the fovea.
3. it keeps the eye muscles strong
4. the aqueous liquid is outside the sclera and the vitreous humor is the liquid inside the eye.
5.the cornea
1. rods are used for dim light vision. cones are used for normal daytime vision
2. they receive light to send be sent on to the retina and brain
3. it builds up the rods and cones
4. aqueous- water like, located between the lens and the cornea, can be lost but is reproduced by ciliary bodies.
vitreous- gel-like, located in the innermost part of the eye, deteriorates and cannot be reproduced
5. lens
1. The main difference between rod cells and cone cells is that the rod cell is responsible for detecting the dim lights only with black and white, and the cone cell is responsible for detecting the bright lights with colors.
2. The perception of color from light. Photorecptors pick up the light when it is reflected from the retina, the brain then picks up the signals of lights.
3. Vitamin A forms the visual purple or violet portion of the rods and cones of the retina.
4. The vitreous humor is behind the lens and fills most of the eye. The aqueous humoris between the cornea, iris, and lens.
5. Refraction of light is the ability of the lens to focus on the light.
1. Rods are photoreceptors stimulated by dim light and used for night vision. Cones are photoreceptors stimulated by day light, there are 3 types of cones: red, green, and blue. The combination of these 3 detect all the colors observable to the human.
2.The perception of color from light. Light is refracted onto the retina where photoreceptors are found that pick up these signals of light and convert them to electrochemical messages to the brain.
3. Vitamin A forms the visual purple or violet of the rods and cones of the retina.Vitamin A in the form of retinol forms on the surface on the retina. The retina is the portion of the eye that senses light and transmits the information about what it sees along nerves to the brain. The cells of the eye can take stored retinol and use it as a building block for rhodopsin, a compound needed for night vision.
4. The aqueous humor is the watery fluid in front of the lens that is constantly made and reabsorbed. The vitreous humor is a gel like fluid that fills the cavity behind the lens and gives the eyeball its shape.
5. The lens of the eye controls light refraction. The ability for the lens to focus on an object, accomodation, is the main controller of light refraction in the eye.
1. Rods help you see at night, cones help you see in the daylight.
2. Photoreceptors take in light and process it in the back of the retina. They are good for seeing in intense light.
3. It helps make retinol which converts light into images. It also makes it easier to see at night, since there is less light coming through the eyes.
4. The aqueous humor is a waterlike substance that coats the eye in front of the pupil, and helps with light refraction. Vitreous humor is the gel that fills the eye and gives it it’s shape.
5. The lens controls how the light is refracted by expanding and contracting.
1. Cones are responsible for light vision which rods are responsible for dim light vision.
2. Photoreceptors transfer light into an electrical impulse that is detected by the brain.
3. Vitamin A is good for the eyesight because it helps build proteins that form pigments that lie in the rods and cones of the retina.
4. The difference between the aqueous humor and vitreous humor is that the aqueous humor is more water like and is constantly being replaces as it is a lubricant and the vitreous humor is more gelatin like and is not being used and replaced.
5. The lens controls light refraction and the shape of the lens as well is controlled by ciliary muscles.
1. The rod cell is responsible for detecting the dim lights only with black and white, and the cone cell is responsible for detecting the bright lights with colors
2. The purpose of photoreceptors are to produce receptor potentials
3. Vitamin A is good for eyesight because vitamin A plays a vital role in vision. The purple retinas present in eyes transform into yellow color, when exposed to light. In addition, a biochemical series containing Vitamin A reinstates purple retinas, which allows us to see. Vitamin A also helps to keep your eyes and retina moist to prevent the onset of many eyesight problems.
4. The aqueous humor is in the front of the eye, inbetween the cornea and the lens. The vitreous humor is behind the lens and in front of the retina. It is made up of a jelly like substance that gives the eye its shape, while the aqueous humor is made up of a water like substance.
5. Most refraction in the eye occurs when light rays travel through the cornea. The eye’s natural lens also bends light rays. Even the eye’s tear film and internal fluids have refractive abilities.
1. The rod cell detects the dim lights only with black and white, and the cone cell detects the bright lights with colors.
2. Photoreceptors produce receptor potentials.
3.Vitamin A forms the visual purple and visual violet of the rods and cones of the retina.
4. The aqueous humor is located at the front of the eye and the vitreous humor makes up most of the eyes shape.
5. The cornea and lens control light refraction.
1.Rods are the photo receptors that are responsible for vision at low light levels. They do not mediate color vision, and have a low spatial acuity while cones are active at higher light levels,capable of color vision and are responsible for high spatial acuity. The central fovea is populated exclusively by cones. There are 3
types of cones red, blue and green.
2.The importance of photoreceptors is that they convert light (electromagnetic radiation) into signals that can stimulate biological processes.
3.Vitamin A offers a range of advantages such as cardiovascular health,sustaining hereditary integrity, and bone metabolism. Vitamin A is a prime nutriment for maintaining good eyesight and excellent skin.Vitamin A might also treat night blindness to a great extent.
4. Aqueous humor is a watery fluid found in the posterior chamber of eye while vitreous humor is a gel-like structure found in the posterior cavity of an eye.
5. Lens
1. Rods aid in daylight vision and cones aid in night-time vision.
2. Photoreceptors take in, process and send images to the optic nerve, which takes them to the brain.
3. It strengthens the rods and cones.
4. The aqueous humor hydrates the lens, pupil, and iris of the eye. The vitreous humor maintains the pressure within the eye.
5. The cornea.
1. Rods and cones are responsible for different areas of vision, with rods mainly being responsible for providing vision at night and cones providing vision in daylight.
2. A photoreceptor cell is a specialized type of neuron found in the eye’s retina that is capable of phototransduction. The great biological importance of photoreceptors is that they convert light into signals that can stimulate biological processes
3. Vitamin A is good for your eyesight. It contains retinoid, a group of compounds that has been proven to have a positive effect on vision, bone growth, and cell division amongst other things. Found in many vegetables and dairy products, Vitamin A is also referred to as anti-infective, because it strengthens the body’s immune system.
4. Aqueous humor is a watery fluid that fills the front of the eye to maintain moisture to ensure sight, where as the vitreous humor maintains the eyes sturcture
5. Refraction is the eye’s ability to bend and focus light rays into a sharp image. Refraction in the eye mainly takes place on the surface of the cornea. The lens focuses the light image onto the center of the retina, which is located at the back of the eye.
1. Rods are responsible for detecting dim lights only with black & white, while cones are responsoble for detecting bright lights with colors.
2. To produce receptor potentials
3. Allows you to see better at night.
4. The vitreous humor is behind the lens and fills most of the eye, while the aqueous humor is between the cornea, lens, and iris.
5. A bent wave
1. rods provide vision at low light levels, while cones provide vision at higher light levels.
2. photoreceptors convert light into signals capable of being processed into biological processes.
3. Because it forms a photo pigment in the retina of the eye called rhodopsin, or visual purple. This pigment is responsible for dark vision from the rods of the retina.
4. The aqueous humor is in the front of the eye and can be reabsorbed, while the vitreous humor provides support in the back of the eye and isn’t reabsorbed.
5. the cornea controls light refraction.
1. Rods are used in night vision, and cones are used to provide better vision in day and to detect different colors.
2. Photoreceptors are used to absorb light rays and convert them into electric impulses that travel along the optic nerve.
3. Vitamin A produces the pigment found in rods and cones called rhodopsin, which helps the rods with improved night vision.
4. The aqueous humor is the liquid in the front of the eye that is constantly drained and produced to maintain the shape of the eye, and the vitreous humor is the gel-like substance that maintains the shape of the posterior chamber.
5. Light refraction is controlled by the cornea and lens, which are used to focus the light and scatter it across the retina.
1. Rods are for night vision and cones are for daylight vision.
2. They capture the image and convert it into an image capable for the brain to see.
3. It is essential to see violet and purple in the rods and cones.
4. acqueous is between the cornea and the lens. Vitreous fills the back of the eye or between the lens and the retina.
5. The lens.
1. Rods are responsible for night vision, while cones are used in day vision and picking up colors.
2. Photoreceptors pick up images from the eye and transmit them to the brain.
3. Vitamin A is good for eyesight because it helps make up the parts of the photoreceptors responsible for good vision.
4. The aqueous humor is held in the front of the eye between the lens and the cornea, while the vitreous humor is held in the back of the eye and is stagnant.
5. The ciliary body and the suspensory ligaments help change the shape of the lens to permit varying amounts of light into the eye.
1. Rods are extremely sensitive, and can be triggered by a very small number of photons. Cones require significantly brighter light.
2. a photosensitive cell in the retina of vertebrate eyes.
3. is a vitamin that is needed by the retina of the eye in the form of a specific metabolite.
4. is a clear, gelatinous fluid similar to plasma, but containing low-protein concentrations. is the clear gel that fills the space between the lens and the retina of the eyeball of humans and other vertebrates.
5. What it is reflecting from and how thick it is.
1. Rods are extremely sensitive, and can be triggered by a very small number of photons. Cones require significantly brighter light.
2. a photosensitive cell in the retina of vertebrate eyes.
3. is a vitamin that is needed by the retina of the eye in the form of a specific metabolite.
4. is a clear, gelatinous fluid similar to plasma, but containing low-protein concentrations. is the clear gel that fills the space between the lens and the retina of the eyeball of humans and other vertebrates.
5. What it’s thickness is and it’s light value.
1.the rods are responsible for detecting the dim lights and the cones are responsible for detecting the bright lights with colors
2.they allow to see different types of colors and use night vision
3.It forms the visual purple and violent of the rods and cones in the retina
4.the aqueous humor is the gel-like liquid inside the sclera and the vitreous humor is behind the lens
5.the lens controls light refraction
1. Cones control day vision and rods control night vision.
2. Photoreceptors don’t fire action potentials, but make it possible for you to see.
3. Vitamin A is said to help protect the eyes from disease and illness.
4. The aqueous humor is located in the front of the eye while the vitreous humor is what makes up most of the eye and its shape.
5. The iris controls how much light enters the pupil, which controls light refraction.
1.rods-responsible for vision at low light levels (scotopic vision). They do not mediate color vision, and have a low spatial acuity; active at higher light levels (photopic vision), are capable of color vision and are responsible for high spatial acuity.
2.to produce receptor potentials
3.a vitamin that is needed by the retina of the eye in the form of a specific metabolite, the light-absorbing molecule retinal, that is necessary for both low-light (scotopic vision) and color vision.
4.The aqueous humour is the clear, watery fluid that fills the complex space in the front of the eye which is bounded at the front by the cornea and at the rear by the front surface or face of the vitreous humour;The Vitreous humor is the clear aqueous solution that fills the space between the lens and the retina.
5.The refraction of light when it passes from a fast medium to a slow medium bends the light ray toward the normal to the boundary between the two media
1. rods are for night vision and cones are for day vision.
2. to produce action potentials that are directed to the brain and focus light on the fovea
3. forms the visual purple and visual violet of the rods and cones of the retina
4. the aqueous humor is in the front of the eye and is water like, the vitreous humor is a gel like substance that gives the eye its shape
5. the cornea
1.rod cell is responsible for detecting the dim lights only with black and white, and the cone cell is responsible for detecting the bright lights with colors. Also in retina, there are more rod cells than the cone cells. thirdly, defect in rods causes night blindness and defect in cones causes color blindness.
2.outer segment holds hundreds of tightly stacked membranous discs that contain the proteins necessary for phototransduction.
3.While vitamin A can’t turn bad eyesight into perfect vision, this important nutrient can help prevent a wide range of eye conditions when consumed in sufficient quantities.
4.the vitreous humour is behind the lens and fills most of the eye and the aqueous humour is between the cornea , lens and iris.
5.The refraction of light when it passes from a fast medium to a slow medium bends the light ray toward the normal to the boundary between the two media.
1. Cones are used to help the eye focus light on a smaller area, giving it a better picture. Rods focus light in a broader area with less detail.
2. Photoreceptors detect light and allow the eye to see.
3. Vitamin A forms the visual purple and visual violet of the rods and cones of the retina.
4. The vitreous humour is behind the lens and fills most of the eye and the aqueous humour is between the cornea , lens and iris.
5. The cornea.
1. Rods help in dim vision. Cones are responsible for color vision.
2. The purpose of photoreceptors is to produce receptor potentials.
3. Vitamin A forms the visual purple and the visual violet of the rods and cones.
4. The aqueous humor is in front of the lens while the vitreous humor is between the retina and the lens.
5. The iris controls light refraction.
1. The rod cell is responsible for detecting the dim lights only with black and white, and the cone cell is responsible for detecting the bright lights with colors.
2. to produce action potentials that are directed to the brain, to produce receptor potentials, to provide nourishment for both the lens and cornea, to focus light on the fovea
3.Vitamin A forms the visual purple and visual violet of the rods and cones of the retina
4.The vitreous humor is inside the sclera and the aqueous humor is the liquid in the sclera
5. The speed.
1. The rod cell is responsible for detecting the dim lights only with black and white, and the cone cell is responsible for detecting the bright lights with colors.
2. to produce action potentials that are directed to the brain, to produce receptor potentials, to provide nourishment for both the lens and cornea, to focus light on the fovea
3.Vitamin A forms the visual purple and visual violet of the rods and cones of the retina
4.The vitreous humor is inside the sclera and the aqueous humor is the liquid in the sclera
5. The speed controls light refraction.
1. The primarily difference between rods and cones is that rods are used during nighttime (and have more photoreceptors), while cones are used for daytime vision (and have fewer photoreceptors).
2. The purpose of photoreceptors is to transfer light into signs capable of being made into biological processes.
3. Vitamin A is good for eyesight because it produces a photo pigment within the retina (named rhodopsin), which is used for dark vision from rods within the retina.
4. The difference between aqueous humor and vitreous humor is that the vitreous humor is located behind the lens of the eye and cannot be constantly remade and reabsorbed (the aqueous humor is located in front of the eye and can me remade and reabsorbed).
5. The cornea controls light refraction.
1. Rods night time sight cones day time sight
2. to produce action potentials that are directed to the brain, to produce receptor potentials, to provide nourishment for both the lens and cornea, to focus light on the fovea
3. Helps improve night vision
4. Aqueous humor is in the front of the eye vitreous humor is in the back of the eye.
5. The cornea
1. Rods are photoreceptors that are rod-shaped. Cones are light sensitive cells found along the rods.
2. Photoreceptors send visual information to the brain.
3. Vitamin a forms the visual purple and visual violet of the rods and cones of the eye.
4. Aqueous humor is secreted from the ciliary epithelium. Vitreous humor fills the space between the lens and the retina.
5. Its interaction with a medium.
1. Rods are responsible for seeing in low light an cones are responsible for high light levels.
2. The purpose of the photoreceptors is to produce receptor potentials.
3. It makes the visual purple for the rods and cones.
4. Aqueous humor-located at front of eye and gives the cornea and lens oxygen an nutrients
Vitreous humor-found between lens and retina and gives the eye its shape
5. The lens refracts light in the eye.
1.The main difference between rod cells and cone cells is that the rod cell is responsible for detecting the dim lights only with black and white, and the cone cell is responsible for detecting the bright lights with colors.
2.Photoreceptors turn the light rays falling on them into electrical impulses, that then travel along the optic nerve to the brain where they are turned back into visual images again.
3.Vitamin A forms the visual purple and visual violet of the rods and cones of the retina.
4.The vitreous humour is behind the lens and fills most of the eye and the aqueous humour is between the cornea , lens and iris. The vitreous humor gives the eye its shape.
5.The cornea and aqueous humor form an outer lens that refracts light on its way into the eye.
1. Rods help us see at night and cones help us with our daily light
2. they convert light to signals
3. it forms the visual purple and violet
4. The aqueous is in the front of the eye and thew vitreous is is between the lens and retina
5. pupil
1)The main difference between rod cells and cone cells is that the rod cell is responsible for detecting the dim lights only with black and white, and the cone cell is responsible for detecting the bright lights with colors. Also in retina, there are more rod cells than the cone cells. thirdly, defect in rods causes night blindness and defect in cones causes color blindness.
2)Photoreceptors, unlike most neurons, do not fire action potentials. Their resting potential in the absence of light is about -40 mV due to the “dark current”. Light then acts to turn the “dark current” off thus making the potential more negative. This is the receptor potential
3)Vitamin A forms the visual purple and visual violet of the rods and cones of the retina. You might have heard of rhodopsin and iodopsin pigments present in rods and cones, respectively. These are conjugated proteins. For example, rhodopsin is composed of opsin and reteneine. The latter is given by vitamin A.
4)the vitreous humor is inside the sclera and the aqueous humor is the liquid in the sclera
5)IRIS
1. rods are responsible for detecting dim light and cones are responsible for detecting brighter light.
2.To produce receptor potentials.
3.Vitamin A forms the visual purple and visual violet of the rods and cones of the retina.
4.the vitreous humor is inside the sclera and the aqueous humor is the liquid in the sclera and the aqueous humor is constantly absorbed and made again.
5.The cornea and crystalline lens control light refraction.
1.the rod cell is responsible for detecting the dim lights only with black and white, and the cone cell is responsible for detecting the bright lights with colors.
2. photoreceptor nerve cells react to the presence and intensity of light by sending an impulse to,the brain via the optic nerve.
3.Vitamin A forms the visual purple and visual violet of the rods and cones of the retina.
4.vitreous humor is inside the sclera and the aqueous humor is the liquid in the sclera
5. Light refraction is controlled by the speed of light