When light strikes photoreceptors,which of the following takes place?
A) More transmitter substance is released.
B) The release of transmitter substance ceases.
C) There is no change in amount of transmitter substance released.
D) Ion channels that were closed become open.
Correct Answer:
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Q14: The unit of measurement of wavelengths of
Q15: The iris of the eye is:
A)Opaque and
Q16: The amount of light entering the eye
Q17: Photoreceptors are unusual because these cells:
A)Are normally
Q18: The _ is the transparent outer coat
Q20: The firing of action potentials in the
Q21: The photopigment utilized by rods is:
A)Amacrine
B)GABAergin
C)Iodopsin
D)Rhodopsin
Q22: Which of the following would you expect
Q23: Cones in the retina:
A)Distinguish among different wavelengths
B)Are
Q24: The photoreceptors make in-line synaptic contact with_
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