PHYSIOLOGY
SYNAPTIC PHYSIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The graded potentials are not strong enough to trigger an action potential.
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The graded potentials are strong enough to trigger an action potential
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The action potentials are not strong enough to trigger a graded potential
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The action potentials are strong enough to trigger a graded potential.
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Hamsters are gnawing on your optic nerve. You should probably have this checked by a doctor.
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Detailed explanation-1: -Rods and cones are the light-sensitive cells on the retina. Cones are sensitive to bright light and are capable of colour vision. Rods are sensitive to dim light and give twilight vision.
Detailed explanation-2: -Rod and Cone Cells: Our eyes use two different types of cells to see light: rods and cones. The cone cells perceive fine detail and color but need bright light in order to do so. Rod cells can only see black and white and have poor resolution, but remain sensitive even in very low light.
Detailed explanation-3: -In the dark, the photoreceptor is depolarized due to an influx of sodium and calcium through open ion channels that are gated by cGMP. The photoreceptor has high levels of cGMP when it is in the dark. Additionally, the opsin proteins, the G-protein transducin, and phosphodiesterase (PDE) are all inactivated.
Detailed explanation-4: -Rods are a type of photoreceptor cell present in the retina that transmits low-light vision and is most responsible for the neural transmission of nighttime sight.