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Questions and Answers
The retina is active in the dark
The retina is active in the dark
True (A)
How does a single photon affect the transduction cascade enough to affect the hyperpolarisation of the cell?
How does a single photon affect the transduction cascade enough to affect the hyperpolarisation of the cell?
Amplification: Each activated rhodophsin R* - activate 500 Transducin - GTP Each PDE hydrolyse up to 800 cyclic GMP molecules (cGMP) Therefore a sing photon can close 4 % of rod channels
Prolonged exposed to light will prolong the hyperpolarisation of the rod cells
Prolonged exposed to light will prolong the hyperpolarisation of the rod cells
True (A)
T he A wave of the ERG corresponds to corresponds to the hyperpolarisation of the photoreceptors
T he A wave of the ERG corresponds to corresponds to the hyperpolarisation of the photoreceptors
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Flashcards
Capital of France (example flashcard)
Capital of France (example flashcard)
Paris
