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Dissecting and examining gas exchange tissue

  • 1 thing to know
  • Components 01 and 03

Overview

Dissecting a bony fish and an insect, the rules of a good biological drawing, and the tissues visible in prepared slides of lung and trachea.

What you need to know

Answer each one before you reveal it.

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Key term

Which tissues are identified in a prepared slide of the trachea?

Questions from this subtopic

Each one with the model answer underneath.

  1. 1

    What structures can be examined when dissecting a bony fish to study gas exchange?

    Model answer

    The gills, gill filaments, gill lamellae and operculum.

  2. 2

    What structures of the gas exchange system can be observed when dissecting an insect?

    Model answer

    The tracheal system, including tracheae and spiracles.

  3. 3

    State three features of a good biological drawing of a dissected structure.

    Model answer

    Accurate proportions, clear labelling, and continuous lines without shading.

  4. 4

    What structures can be observed in microscope slides of lung tissue?

    Model answer

    The thin squamous epithelium of alveoli, capillaries, and elastic fibres.

  5. 5

    What type of supportive tissue can be observed in a microscope slide of the trachea?

    Model answer

    Cartilage

  6. 6

    Which epithelial tissue type lines the trachea and is visible in prepared microscope slides?

    Model answer

    Ciliated epithelium

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