The conformational change of retinal, from the cis to trans configuration, indirectly: O Hyperpolarizes the photoreceptor by closing Na+ channels. Hyperpolarizes the photoreceptor by opening Na+ channels. Depolarizes the photoreceptor by opening Na+ channels. Depolarizes the photoreceptor by closing Na+ channels.
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- My question is The 2 types of photoreceptors cells within the retina are ______________ and _____________. These cells express a specialized G-protein coupled receptor which converts light into an electrical signal through the isomerization of ________________.Question: The optic nerve is formed by the axons of these cells which are the only cells in the neuro sensory retina that can carry action potentials. These cells are called: Photoreceptors Amacrine cells O Bipolar cells O ganglion cells horizontal cellsA typical incandescent lightbulb emits approximately 3 x 1018 visible-light photons per second. Your eye, when it is fully dark adapted, can barely see the light from an incandescent lightbulb 10 km away. How many photons per second are incident at the image point on your retina? The diameter of a dark-adapted pupil is 6 mm.
- According to the video, What is the pigment in our skin that reflects or absorbs light? Video - https://www.youtube.com/watch?v=hFw8mMzH5YA&t=834sStereocilia are ______. Question 62 options: the first synapse in the auditory nerve connections that the cochlea has to the outer ear the hair-like parts of the hair cells on the top of the inner and outer hair cells cells that sharpen and amplify the responses of the inner hair cells When a complex sound reaches the basilar membrane, one can expect that ______. Question 63 options: the sound is dampened by stereocilia in the oval window the sound will be processed on Reissner's membrane, not the basilar membrane the basilar membrane will displace at multiple points the cochlea will unwind just a bit to allow hair cells to reach the soundWhich of the following pairings is FALSE? Question 34 options: Merkel cells = sensation of general sense of "touch" across most of the skin E Lamellated (Pacinian) corpuscles = sensation of heavy pressure, vibration Tactile (Meissner's) corpuscles = delication sense of touch (finger tips) Baroreceptors sensation of fullness (stomach) All are correct pairings
- QUESTION 42 What are the different types of tests done for hearing acuity(any 3 ONLY) ? For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac). BIU S Paragraph Arial 14px QUESTION 43 !!! P.New Tab a docs.google.com/forms/d/e/1FAlpQLSfcb08kSEoX2nkHlw2TQntW-IHbohTvMGsXQmKO36VumnFnEQ/formResponse The synaptic inputs from horizontal cells on photoreceptor terminals: O is not involved in light adaptation have a depolarizing effect when GABA release is reduced reflect illumination level at a very narrow area of the retina are most active when the surround is not illuminated In the presence of light, the hyperpolarization of photoreceptors leads to: O hyperpolarization of « ON » bipolar cells an increase of glutamate release O a decrease of glutamate release Unlike the sclera, the cornea: O is at the back of the eye has a high concentration of melanin O15 the colored portion of the eye O O O O OQUESTION 41 Interpret the following reading of visual acuity test ? Visual Acuity Reading Interpretation Both Eyes 6/6 A. Both Eyes 4/6 B. For the toolbar, press ALT+F1O (PC) or ALT+FN+F10 (Mac). B IUS Paragraph Arial 14px :=v三v P.
- QUESTION 2 The highest frequency sound is detected by O unique hair cells located anywhere along the cochlea hair cells located near the middle of the cochlea hair cells located near the far end of the cochlea hair cells located at the near end of the cochlea O O O OQuestion 40 Which of the following statements concerning the somatosensory system is TRUE? Choose the correct option. Visceral senses are special senses. An individual sensory neuron carries information for one sensory modality. O Sensory neurons for touch can also carry pain impulses. Somatic senses are special senses. O All of the above statements are true.Very short pulses of high-intensity laserbeams are used to repair detached portions of the retina of the eye. Thebrief pulses of energy absorbed by the retina weld the detached portionsback into place. In one such procedure, a laser beam has a wavelengthof 810 nm and delivers 250 mW of power spread over a circularspot 510 mm in diameter. The vitreous humor (the transparent fluid thatfills most of the eye) has an index of refraction of 1.34. If the laser pulses are each 1.50 ms long, how much energy is delivered to the retina with each pulse?