Sheep Eye Dissection Flashcards
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Questions and Answers

What is the sclera?

  • Focusing the arriving image
  • Transfer of visual information
  • Attachment site for eye muscle (correct)
  • To allow light through
  • What does the optic nerve do?

  • Transfer of visual information (correct)
  • Helps maintain eye shape
  • Controls the size of the pupil
  • Adjusts the shape of the lens
  • What is the primary function of the cornea?

  • Receive light from lens
  • Controls the size of the pupil
  • To allow light through (correct)
  • Focusing the arriving image
  • What is the function of the lens?

    <p>Focusing the arriving image</p> Signup and view all the answers

    What does the ciliary body do?

    <p>Adjusts shape of lens</p> Signup and view all the answers

    What is the role of the choroid in the eye?

    <p>Delivers oxygen and nutrients to retina</p> Signup and view all the answers

    What does the retina do?

    <p>Receives light from the lens</p> Signup and view all the answers

    What is the optic disk?

    <p>Place where axon exits</p> Signup and view all the answers

    What function does vitreous humor serve?

    <p>Helps maintain eye shape</p> Signup and view all the answers

    What is the primary function of the pupil?

    <p>Light into the eye</p> Signup and view all the answers

    What is the role of the iris?

    <p>Controls the size of pupil</p> Signup and view all the answers

    What is unique about the choroid?

    <p>It is a thin black/brown film covering the eye.</p> Signup and view all the answers

    What does the ciliary body look like?

    <p>Black with 'spokes'</p> Signup and view all the answers

    What is the structure of the cornea?

    <p>Clear 'disk' covering the iris and pupil</p> Signup and view all the answers

    Describe the optic nerve.

    <p>It is the cranial nerve that serves the retina.</p> Signup and view all the answers

    What does the pupil do?

    <p>It is the opening through which light enters the eye.</p> Signup and view all the answers

    What is the retina beneath the choroid?

    <p>Thin, translucent film covering the eye.</p> Signup and view all the answers

    What functions are associated with the sclera?

    <p>Attachment for eye muscles</p> Signup and view all the answers

    What are key components of the eye and their respective features?

    <p>Extrinsic muscles</p> Signup and view all the answers

    Which structures are associated with the optic nerve?

    <p>Sclera</p> Signup and view all the answers

    What does the ciliary body and lens do?

    <p>Lens focusing light</p> Signup and view all the answers

    Identify the primary components of the iris and pupil.

    <p>Pupil</p> Signup and view all the answers

    Study Notes

    Eye Anatomy Key Terms

    • Sclera: Tough, white outer coat of the eyeball; attachment site for eye muscles.
    • Optic Nerve: Cranial nerve responsible for transferring visual information from the retina; appears as a white line at the back of the eye.
    • Cornea: Clear, dome-shaped surface that covers the iris and pupil; allows light to enter the eye.
    • Lens: Transparent structure that focuses incoming light to form images on the retina.
    • Ciliary Body: Black structure with "spokes"; adjusts the shape of the lens for focusing; anchors suspensory ligaments.
    • Choroid: Thin black/brown layer beneath the sclera; contains blood vessels that deliver oxygen and nutrients to the retina.
    • Retina: Light-sensitive layer of tissue at the back of the eye; receives light focused by the lens.
    • Optic Disk: Area where the optic nerve exits the retina; known as the blind spot due to lack of photoreceptors.
    • Vitreous Humor: Gel-like substance filling the eye; helps maintain its shape.
    • Pupil: Opening that allows light to enter the eye; size is controlled by the iris.
    • Iris: Colored part of the eye; regulates the amount of light that enters by controlling the size of the pupil.
    • Tapetum Lucidum: Iridescent layer in some animals; provides a blue-green sheen and enhances low-light vision.

    Functions and Additional Information

    • Pupil Function: Regulates light entry into the eye for optimal vision.
    • Iris Function: Adjusts pupil size based on light exposure; expands or contracts to control light intake.
    • Choroid Function: Provides nutrients to the retina and absorbs excess light to enhance visual clarity.
    • Extraocular Muscles: Control the movement of the eye; important for tracking and visual focus.

    Surface Structure

    • Cornea is the primary outer layer that is clear and refractive, critical for focusing light.
    • Sclera provides structural support and protection; it is durable and opaque.
    • Choroid layer complements functions of the retina, supporting its health and operation.

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    Description

    Explore the key components of the sheep eye with this flashcard quiz. Each card features a specific part of the eye along with its function, helping you understand the anatomy and physiology of vision. Perfect for biology students and anyone interested in eye dissection.

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