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Animal Body Science/Biology 224 Photoreception lecture $10.49   Add to cart
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Animal Body Science/Biology 224 Photoreception lecture

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  • Course
  • Biology 224 (ABS224)
  • Institution
  • University Of Saskatchewan (USask )

This lecture is all about photoreception. The words typed in black are from the PowerPoint and the words in pink are either fill-in-blank or what Dr. Chedrese said.

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Document information

  • April 12, 2023
  • 4
  • 2022/2023
  • Class notes
  • Dr. chedrese
  • All classes

Subjects

  • photoreception
  • cons
  • rods
  • receptors
  • opsin
  • retina
  • glutamate

Written for

  • University of Saskatchewan (USask )
  • Biology
  • Biology 224 (ABS224)
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Content preview

Lecture 6.1 – Photoreception
Objectives
§ Single-lens eye
§ Photoreception
§ The photoreception component
of the retina
§ Photoreceptors
§ Retinal and opsin
§ Glutamate
§ Signalling light
Single-lens Eye
§ Lens captures and focuses light
to take a picture.
§ Structure that contains optic
system
o Captures light.
o Distinguish colours.
§




Photoreception
• Photoreception refers to mechanisms of light detecting that lead to vision.
The photoreception components of the retina
• Consists of several layers of neurons interconnected by synapses supported by an outer layer lf
epithelial pigmented photoreceptor cells.
• There are currently three known types of photoreceptor cells in mammalian eyes; rods, cones, and
intrinsically photosensitive retinal ganglion cells.
o From google.
• Photoreceptor: a structure in a living organism, especially a sensory cell or sense organ, that responds
to light falling on it.

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