Answered: Explain fully how light is detected by…

Explain fully how light is detected by your eye and the signal sent to your brain. Be sure to identify and explain the roles of: rhodopsin, rods, bipolar cells, ganglion cells, optic nerve

Human Biology (MindTap Course List)

11th Edition

ISBN:9781305112100

Author:Cecie Starr, Beverly McMillan

Publisher:Cecie Starr, Beverly McMillan

Chapter14: Sensory Systems

Section: Chapter Questions

Problem 10SQ: The inner layer of the eye includes the _____________. a. lens and choroid b. sclera and cornea c....

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Explain fully how light is detected by your eye and the signal sent to your brain. Be sure to identify and explain the roles of: rhodopsin, rods, bipolar cells, ganglion cells, optic nerve.

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Select the options that properly describe the function and features of rods. A bright blue light would stimulate rods more than cones. In low light conditions rods perceive color as gray cale. sensitive to bright light conditions. Rods are sensitive to vision in low light conditions. In low light conditions rods perceive color as blue scale. Low light conditions are viewed in blue scale. O The absorbance of rhodopsin in the rods is much more sensitive than in the cone opsins. Rods are sensitive to vision in bright light conditions. sensitive to low light conditions. Rods are sensitive to low light conditions. V The absorbance of rhodopsin in the cones is much more sensitive than in the rods opsins. Rods are sensitive to bright light conditions.
Put the following steps in order for transduction for vision. Question options: PDE breaks down cyclic GMP Photon is absorbed by discs the photoreceptor hyperpolarizes Sodium channels are inactivated and the dark current stops Opsin is activated Phosphodiesterase (PDE) is activated Transducin is activated
Select the options that properly describe the function and features of rods. The absorbance of rhodopsin in the rods is much more sensitive than in the cone opsins. O The absorbance of rhodopsin in the cones is much more sensitive than in the rods opsins. sensitive to bright light conditions. O Rods are sensitive to vision in bright light conditions. O In low light conditions rods perceive color as blue scale. O In low light conditions rods perceive color as gray cale. O sensitive to low light conditions. Rods are sensitive to low light conditions. OA bright blue light would stimulate rods more than cones. O Rods are sensitive to vision in low light conditions. OLow light conditions are viewed in blue scale. Rods are sensitive to bright light conditions.
key function of rod photoreceptors is to: detect colors detect fine details in the visual field. detect light under low levels of illumination. detect light under high levels of illumination. During phototransduction, transducin activates phosphodiesterase (PDE) that converts: GTP to GDP CGMP to GMP retinal cis to retinal trans retinal trans to retinal cis
Review how photoreceptors within the eye detect light and transmit that information to the brain, by identifying each lettered structure in the figure below and answering the questions that follow: A: B: C: D: E: F: G: Which structure responds to color?: Which structure responds to dim light and movement?: Which two structures release neurotransmitters in response to light?: Which structure binds to those neurotransmitters, relays an action potential, and releases a second set of neurotransmitters?: Which structure binds to this second set of neurotransmitters and relays an action potential through the optic nerve to the brain?: Which direction does light travel through the retina? Toward the choroid or away?: Which direction do neural signals travel through the retina? Toward the choroid or away?:
Match the following statements to the type of cell in the eye each describes (rods or cones). Select "Both" if the statement is true of both cell types. Rods Directly detects light coming into the eye. Different types of this cell Cones respond to different wavelengths (colors) of light. More sensitive to low levels of light. Rods Found in high concentrations at the fovea centralis. Cones < <
#4.
What could be the reason why vitamin A is essential for visual acuity? Select the correct response: • It is converted into the pigment in the iris that absorbs harmful UV radiation. • It is an integral part of the visual pigment in the retina called rhodopsin. • It neutralizes free radicals that can damage the retina of the eyes. • It serves as lubricant in the vitreous humor of the eyes.
1. Using your knowledge on personal care products, how does sunscreen lotion protect your skin from the damaging effect of ultraviolet rays? Explain why of x-rays and gamma rays are commonly used in radiotherapy. 2. Why do x-rays and gamma rays are commonly used in treating cancer (radiotherapy)? 3. Suppose a 490 nm wavelength of light enters your eyes, what receptors in retina of your eyes will be stimulated and what color will be perceived by your eyes?
Rhodopsin contains: opsin and retinal vitamin A and ATP red, blue and green pigments light waves The uveal tract consists of: the retina, the choroid and the ciliary body the choroid, the ciliary body and the iris the retina, the pupil and the cornea the sclera, the cornea and the iris
Classify statements about the eye as true or false. True The iris regulates the amount of light that enters the eye. The cornea is a transparent covering over the eye. The fovea is the part of the eye where you have the sharpest, most distinct vision. The image formed in the eye is upright. False Adjustments in focus are collectively called accommodation and are made by the ciliary muscle. The fovea is the opening through which light enters the eye. The image seen by the eye should be focused on the pupil Information leaves the eye through the ciliary muscle.
The correct pathway of activation (by sending neuronal signals) in the retina is bipolar cell - retinal ganglion cell - photoreceptor photoreceptor - retinal ganglion cell - bipolar cell retinal ganglion cell - bipolar cell - photoreceptor photoreceptor - bipolar cell - retinal ganglion cell O bipolar cell - photoreceptor - amacrine cell