**Educational Content on Vision and Eye Anatomy** --- **1. The Synaptic Inputs from Horizontal Cells on Photoreceptor Terminals:** - ○ is not involved in light adaptation - ○ have a depolarizing effect when GABA release is reduced - ○ reflect illumination level at a very narrow area of the retina - ○ are most active when the surround is not illuminated **2. In the Presence of Light, the Hyperpolarization of Photoreceptors Leads to:** - ○ hyperpolarization of "ON" bipolar cells - ○ an increase of glutamate release - ○ a decrease of glutamate release **3. Unlike the Sclera, the Cornea:** - ○ is at the back of the eye - ○ has a high concentration of melanin - ○ is the colored portion of the eye --- This content explores the function of horizontal cells in the retina, the effects of light on photoreceptor cells, and comparisons between different parts of the eye's anatomy.

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
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**Educational Content on Vision and Eye Anatomy**

---

**1. The Synaptic Inputs from Horizontal Cells on Photoreceptor Terminals:**

- ○ is not involved in light adaptation
- ○ have a depolarizing effect when GABA release is reduced
- ○ reflect illumination level at a very narrow area of the retina
- ○ are most active when the surround is not illuminated

**2. In the Presence of Light, the Hyperpolarization of Photoreceptors Leads to:**

- ○ hyperpolarization of "ON" bipolar cells
- ○ an increase of glutamate release
- ○ a decrease of glutamate release

**3. Unlike the Sclera, the Cornea:**

- ○ is at the back of the eye
- ○ has a high concentration of melanin
- ○ is the colored portion of the eye

---

This content explores the function of horizontal cells in the retina, the effects of light on photoreceptor cells, and comparisons between different parts of the eye's anatomy.
Transcribed Image Text:**Educational Content on Vision and Eye Anatomy** --- **1. The Synaptic Inputs from Horizontal Cells on Photoreceptor Terminals:** - ○ is not involved in light adaptation - ○ have a depolarizing effect when GABA release is reduced - ○ reflect illumination level at a very narrow area of the retina - ○ are most active when the surround is not illuminated **2. In the Presence of Light, the Hyperpolarization of Photoreceptors Leads to:** - ○ hyperpolarization of "ON" bipolar cells - ○ an increase of glutamate release - ○ a decrease of glutamate release **3. Unlike the Sclera, the Cornea:** - ○ is at the back of the eye - ○ has a high concentration of melanin - ○ is the colored portion of the eye --- This content explores the function of horizontal cells in the retina, the effects of light on photoreceptor cells, and comparisons between different parts of the eye's anatomy.
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