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Discuss the distinct roles of rod cells, cone cells, and
rhodopsin in converting a light stimulus into a nerve
impulse.
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- Describe the steps involved in vertebrate phototransduction by photoreceptors and further retinal processing by bipolar and ganglion cells.Section B: Matching. Match the following (an answer may be used more than once): Causes platelets to aggregate in positive-feedback fashion Activates prothrombin First factor activated in intrinsic clotting pathway 1. 2. 3. 4. Forms the meshwork of the clot 5. Stabilizes the clot Activates fibrinogen Activated by tissue thromboplastin Inhibits platelet aggregation 6. 7. 8. (a) fibrin (b) ADP (c) thrombin (d) factor X (e) factor XII (f) factor XIII (g) prostacyclinWith what cells do photoreceptors form synapses?
- Transduction of a stimulus usually causes depolarization of a sensory receptor. a.)In most receptors, what is the chemical basis for this depolarization (that is, what is the specific mechanism for the change)?b.)How is a photoreceptor different from other receptors in terms of its membrane potential? c.) Explain how photoreceptors in the light can lead to excitation of some bipolar cells and inhibition of otherskey 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 cisBriefly describe how lateral inhibition increases apparent contrast at edges. In your response be sure to discuss the role of light receptors, horizontal cells and bipolar cells.
- 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.Select the options that properly describe the function and features of cone cones can see red, glue and green. A A bright blue light would stimulate rods more than cones. O In low light conditions cones perceive color as gray cale. O In low light conditions cones perceive color as blue scale. O cones view low light conditions in grayscale. O cones are sensitive to bright light conditions.Help me please
- 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?:Can measures of sensory acuity be obtained through filaments and biothesiometer? Explan why or why not Do you tink changing the frequency of the biothesiometer vibrations would affect your measured results? Why? Which settings affect the frequency of stimulation, which affect amplitudeWhen you are stalking your friend's social media via a smartphone.a. In your opinion, which receptor organs and cells function to process light stimuli so that they can be transmitted to neurons to become an electrical signal. Explain your answer!b. Describe in detail how the light transduction process pathway to the eye, so that it can see an information from your smartphone!
