How are Ca2+ channels involved in phototransduction?they cause neurotransmitter release even if no action potentials are producedare not affected by PDE activation in the outer segmentswhen open, they lead to hyperpolarization in photoreceptorsin darkness, they do not rely on CGMP levelsThe density of cones in the retina:is highest where cone outer segments increase in diameteris lowest where retinal blood vessels are absentis drastically less than that of rods in the foveais indicative of what areas are associated with acuityThe recycling of rhodopsin.

Introduction The sensory transduction of the visual system is called visual phototransduction. It is…

How are Ca2+ channels involved in phototransduction? they cause neurotransmitter release even if no action potentials are produced O are not affected by PDE activation in the outer segments when open, they lead to hyperpolarization in photoreceptors O in darkness, they do not rely on CGMP levels

How are Ca2+ channels involved in phototransduction? they cause neurotransmitter release even if no action potentials are produced O are not affected by PDE activation in the outer segments when open, they lead to hyperpolarization in photoreceptors O in darkness, they do not rely on CGMP levels

BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)

10th Edition

ISBN:9781305967359

Author:STARR

Publisher:STARR

Chapter30: Sensory Perception

Section: Chapter Questions

Problem 2CT

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Question

How are Ca2+ channels involved in phototransduction?
they cause neurotransmitter release even if no action potentials are produced
are not affected by PDE activation in the outer segments
when open, they lead to hyperpolarization in photoreceptors
in darkness, they do not rely on CGMP levels
The density of cones in the retina:
is highest where cone outer segments increase in diameter
is lowest where retinal blood vessels are absent
is drastically less than that of rods in the fovea
is indicative of what areas are associated with acuity
The recycling of rhodopsin.

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