Vitreous Humor
39 Questions
2 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What percentage of the vitreous is composed of water?

  • 90%
  • 80%
  • 98.5% to 99.7% (correct)
  • 95%

    • What is the main structural component of the vitreous body?

  • Collagen Type II fibers (correct)
  • Amino acids
  • Hyalocytes
  • Hyaluronic acid

    • What is the volume of the vitreous chamber?

  • 6 ml
  • 5 ml
  • 4 ml (correct)
  • 3 ml

    • What is the shape of the vitreous body?

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

    What is the function of the hyalocytes in the vitreous?

    <p>They regulate the consistency of the vitreous</p> Signup and view all the answers

    How does the consistency of the vitreous change throughout life?

    <p>It becomes more liquid-like as we age</p> Signup and view all the answers

    What is the primary function of the vitreous in the eye?

    <p>To cushion the eye from external forces</p> Signup and view all the answers

    Which structure represents the site of the former embryological hyaloid artery?

    <p>Cloquet’s Canal</p> Signup and view all the answers

    What is the common cause of Weiss ring formation in the vitreous gel?

    <p>Normal aging changes</p> Signup and view all the answers

    Which part of the vitreous contains transvitreal channels that can appear as holes?

    <p>Posterior Vitreous Cortex</p> Signup and view all the answers

    What is the clinical significance of vitreous hemorrhage?

    <p>It can result from neovascularization in diabetic retinopathy</p> Signup and view all the answers

    Which of the following regions of the vitreous has tight attachments with the highest likelihood of causing a retinal tear?

    <p>Vitreous Cortex</p> Signup and view all the answers

    Which of the following is NOT one of the five attachments of the vitreous to the retina and lens?

    <p>Anterior chamber angle</p> Signup and view all the answers

    What is the term used to describe the space between Weiger's ligament and the posterior lens capsule?

    <p>Berger's Space</p> Signup and view all the answers

    Which of the following statements about the vitreous cortex is INCORRECT?

    <p>The vitreous cortex is composed primarily of collagen fibrils and hyalocytes.</p> Signup and view all the answers

    What is the function of Cloquet's Canal, also known as the hyaloid channel?

    <p>It is a remnant of the primary vitreous and the former embryological hyaloid artery.</p> Signup and view all the answers

    Which of the following statements about vitreous hemorrhage is CORRECT?

    <p>It can result from the rupture of normal vessels due to conditions like retinal tears or posterior vitreous detachment.</p> Signup and view all the answers

    What is the term used to describe the funnel-shaped space at the optic nerve head?

    <p>Martegiani's Area</p> Signup and view all the answers

    Which of the following statements about vitreous asteroid hyalosis is INCORRECT?

    <p>It is more commonly seen in younger individuals.</p> Signup and view all the answers

    What is the primary function of the vitreous in the eye?

    <p>To serve as a transparent medium for the passage of light and act as a cushion for the retina and lens.</p> Signup and view all the answers

    What is the primary function of the collagen fibrils in the vitreous?

    <p>To provide structural support and maintain the gel-like consistency</p> Signup and view all the answers

    What is the purpose of the patellar fossa in the vitreous chamber?

    <p>To allow for the movement of the lens during accommodation</p> Signup and view all the answers

    Which of the following substances is found in higher concentrations in the vitreous compared to plasma?

    <p>Vitamin C</p> Signup and view all the answers

    Which of the following best describes the role of hyalocytes in the vitreous?

    <p>They help maintain the transparency of the vitreous</p> Signup and view all the answers

    What is the significance of the high water content in the vitreous?

    <p>It provides a medium for the transmission of light</p> Signup and view all the answers

    What is the primary role of hyaluronic acid in the vitreous?

    <p>To provide structural support and maintain the gel-like consistency</p> Signup and view all the answers

    How does the consistency of the vitreous change throughout life?

    <p>It becomes more liquid with age</p> Signup and view all the answers

    What is the primary function of the vitreous in the eye?

    <p>To provide a transparent medium for the passage of light</p> Signup and view all the answers

    What is the clinical significance of vitreous hemorrhage?

    <p>All of the above</p> Signup and view all the answers

    Which region of the vitreous has the tightest attachments with the highest likelihood of causing a retinal tear?

    <p>Vitreous base</p> Signup and view all the answers

    What is the term used to describe the space between Weiger's ligament (retrolental ligament) and the posterior lens capsule?

    <p>Berger's space</p> Signup and view all the answers

    What is the primary structural component of the vitreous body?

    <p>Collagen fibrils</p> Signup and view all the answers

    Which of the following statements about vitreous asteroid hyalosis is INCORRECT?

    <p>It is a bilateral condition that is commonly seen in young individuals</p> Signup and view all the answers

    What is the primary structural component of the vitreous body, making up a majority of its composition?

    <p>Hyaluronic Acid</p> Signup and view all the answers

    Which region of the eye's vitreous chamber is described as having a spherical shape with an indentation for the lens?

    <p>Anterior surface</p> Signup and view all the answers

    What is the function of hyalocytes in the vitreous body?

    <p>Maintain collagen fibrils</p> Signup and view all the answers

    What is the volume of the vitreous chamber in an average adult eye?

    <p>$5$ ml</p> Signup and view all the answers

    In what part of the vitreous chamber are hyalocytes primarily located?

    <p>Cortex near the vitreal surface</p> Signup and view all the answers

    What is a distinguishing characteristic of the vitreous cortex based on scanning electron microscopy?

    <p>Dense packing of collagen fibrils</p> Signup and view all the answers

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser