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Photoreceptor Structure and Function

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Questions and Answers

Which of these cell types is located closest to the pigment epithelium?

Bipolar cells

Rods and cones (correct)

Optic nerve

Ganglion cells

What is the correct order of cell layers in the retina through which light travels, from outermost to innermost?

Bipolar cells, ganglion cells, rods and cones, pigment epithelium

Rods and cones, bipolar cells, ganglion cells, pigment epithelium

Pigment epithelium, ganglion cells, bipolar cells, rods and cones

Pigment epithelium, rods and cones, bipolar cells, ganglion cells (correct)

Which of these statements is TRUE about the relationship between light and photoreceptor cells?

Photoreceptor cells are most sensitive to light when completely dark.

Photoreceptor cells release neurotransmitters when exposed to light. (correct)

Photoreceptor cells are activated by the absence of light.

Photoreceptor cells become more sensitive to light in bright conditions.

Which of these options is NOT a component of the retina?

<p>Cornea (D)</p> Signup and view all the answers

What happens to the information processed by ganglion cells before it reaches the brain?

<p>It is relayed to the optic nerve. (A)</p> Signup and view all the answers

Flashcards

Photoreceptors

Light-sensitive cells in the retina that detect light.

Rods and Cones

Types of photoreceptors; rods detect low light, cones detect color.

Retina

Layer at the back of the eye containing photoreceptors.

Bipolar Cells

Cells that relay signals from photoreceptors to ganglion cells.

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Optic Nerve

Bundle of ganglion cell axons that carries visual information to the brain.

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Study Notes

Photoreceptor Structure and Function

Photoreceptors are light-sensitive cells in the retina.
They are arranged in layers.
Light enters the retina through the pigment epithelium (outermost layer).
Light then reaches rods and cones (photoreceptor cells).
Light passes through layers of bipolar and ganglion cells.
Optic nerve signals exit the eye.

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Description

This quiz explores the structure and function of photoreceptors in the retina. It covers the arrangement of cells, how light interacts with various layers, and the process of signal transmission to the optic nerve. Test your knowledge on how our eyes perceive light!