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19.4: Laboratory Activities and Assignment

  • Page ID
    53810
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    Laboratory Activities and Assignment

    Part 1: Review of the Respiratory System

    1. Put the following structures in order as indicated by each part a. and b. below:

    • alveolar duct
    • alveolar sac
    • alveoli
    • bronchioles
    • laryngopharynx
    • larynx
    • external nares
    • nasal meatuses
    • nasal vestibule
    • nasopharynx
    • oropharynx
    • primary bronchi
    • respiratory bronchioles
    • respiratory membrane
    • secondary bronchi
    • terminal bronchioles
    • tertiary bronchi
    • trachea

    a. Put the structures in order air passes through from entry into the respiratory system to the point of gas exchange with the blood (this order follows the path of O2 into the body):

    1. ____________________

    2. ____________________

    3. ____________________

    4. ____________________

    5. ____________________

    6. ____________________

    7. ____________________

    8. ____________________

    9. ____________________

    10.____________________

    11.____________________

    12.____________________

    13.____________________

    14.____________________

    15.____________________

    16.____________________

    17.____________________

    18.____________________

    b. Put the structures in order air passes through from gas exchange with the blood to its exit from the respiratory system (this order follows the path of CO2 out of the body):

    1. ____________________

    2. ____________________

    3. ____________________

    4. ____________________

    5. ____________________

    6. ____________________

    7. ____________________

    8. ____________________

    9. ____________________

    10.____________________

    11.____________________

    12.____________________

    13.____________________

    14.____________________

    15.____________________

    16.____________________

    17.____________________

    18.____________________

    2. Label the diagram below with the following structures:

    • alveolar duct
    • alveolar sac
    • alveoli
    • bronchioles
    • diaphragm
    • epiglottis
    • esophagus
    • external nares
    • frontal sinus
    • hard palate
    • entrance to auditory tube
    • inferior lobe (2 places)
    • inferior nasal concha
    • inferior nasal meatus
    • internal nares
    • laryngopharynx
    • larynx
    • left lung
    • left primary bronchus
    • middle lobe
    • middle nasal concha
    • middle nasal meatus
    • nasal vestibule
    • nasopharynx
    • oral cavity
    • oropharynx
    • pulmonary capillaries
    • respiratory bronchioles
    • right lung
    • right primary bronchus
    • secondary bronchi
    • soft palate
    • sphenoid sinus
    • superior lobe (2 places)
    • superior nasal concha
    • superior nasal meatus
    • terminal bronchioles
    • tertiary bronchi
    • trachea
    • tracheal cartilages
    • uvula

    Diagram of respiratory anatomy for labeling

    2. Label the diagram of the respiratory mucosa lining much of the large airways of the respiratory tract with the structures listed below.

    • basement membrane
    • cilia
    • goblet cell
    • lamina propria
    • lumen
    • pseudostratified columnar epithelium
    • smooth muscle

    Tissue diagram for labeling

    3. Below is a microscopic image of lung tissue magnified by 100x. Label the following structures:

    • alveolar ducts (multiple)
    • alveoli
    • respiratory bronchiole
    • terminal bronchiole

    Microscopic image of lung tissue for labeling

    4. Below is a diagram of alveolar structures with a tissue section showing some of those alveolar structures. Label the following on both the figure and the microscopic tissue section where possible.

    • alveolar lumen
    • alveolar macrophage
    • connective tissue
    • endothelial cells / endothelium
    • interalveolar septum
    • pulmonary capillaries
    • red blood cells
    • surfactant
    • type I alveolar cell
    • type II alveolar cell

    Microscopic diagram and tissue of alveolar structures

    Part 2: Examining the Histology of the Respiratory System

    1. Obtain the slides listed below that are available for today’s lab.
    2. Focus on each sample and identify the structures listed for each type of tissue.
    3. Indicate the total magnification you make each illustration at in the space provided.
    4. Illustrate each tissue you observe with the microscope at the magnification you listed.
    5. Label each illustration with the structures listed for each.

    Trachea Cross Section

    Illustrations at more than one magnification will be required.

    Label the tissue with: trachea, esophagus, cartilage ring, opening in cartilage ring, lumen, pseudostratified ciliated columnar epithelium, goblet cells, cilia, basement membrane, lamina propria, elastic lamina, mixed glands, hyaline cartilage

    Location for microscopic illustration.

    Location for microscopic illustration.

    Lung Tissue

    More than one illustration will required with more than one magnification.

    Label the tissue with: secondary bronchi, cartilage plates, pulmonary blood vessels, bronchioles, terminal bronchiole, respiratory bronchiole, alveolar ducts, alveoli, type I alveolar cells, interalveolar septum, endothelium, pulmonary capillary, connective tissue, alveolar lumen

    Location for microscopic illustration.

    Location for microscopic illustration.

    Location for microscopic illustration.

    Part 3: Mechanism of Breathing (Balloon-and-Bell Jar Model)

    Materials

    • Balloon-and-bell jar

    Bell jar diagram with rubber diaphragm and balloons inside.

    Instructions & Questions

    1. Pull down the rubber sheet. What happens to the balloons? ___ .
    2. This represents the downward movement of the human __ , which causes the chest cavity to become _______ (larger/smaller). This, in turn, causes the human _ _____ to expand and fill with air.
    3. Release the rubber sheet. What happens to the balloons?______________.
    4. This represents relaxed __________ (inhaling/exhaling), when the chest cavity becomes smaller and the lungs deflate. Note that this is a passive process.
    5. What organs do the balloons represent? __________________
    6. What does the rubber sheet you pulled on represent? ____________________

    Attributions

    Part 1: Review of the Respiratory System

    Part 2: Examining the Histology of the Respiratory System

    Part 3: Mechanism of Breathing (Balloon-and-Bell Jar Model)


    This page titled 19.4: Laboratory Activities and Assignment is shared under a CC BY-NC-SA 4.0 license and was authored, remixed, and/or curated by Rosanna Hartline.

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