CIBA Foundation Symposium on Pulmonary Structure and Function

By A. V. S. De Reuck; Maeve O'Connor | Go to book overview

Short communication


SOME REMARKS ON THE SUB-MICROSCOPIC ANATOMY AND PATHOLOGY OF THE BLOODAIR PATHWAY IN THE LUNG

HERIBERT SCHULZ Institute of Pathology, Academy of Medicine, Düsseldorf

ONE of the most important findings from ultrastructural research on the lung is that by electron microscopy the presence of an epithelial lining of the pulmonary alveoli has been proved. Low ( 1953) was the first to observe a continuous epithelial lining of the alveolar wall in the normal rat lung. From electron microscopic investigations of the respiratory surfaces of other vertebrates, other authors were able to confirm the existence of an uninterrupted cell lining of the pulmonary alveoli.

This continuous cellular covering of the alveolar spaces has also been demonstrated by electron microscopic studies on surgically excised material from human lung tissue. In Fig. 1 the walls of four transected pulmonary alveoli are to be seen; these walls are covered completely by alveolar cells. The portions of the alveolar epithelial cells containing the nuclei bulge into the alveolar recesses. The arrows indicate the transition of the cytoplasm enveloping the nucleus from that which forms the flattened cytoplasmic linings; these linings reach out laterally as cellular extensions to cover the pulmonary alveoli completely. The flat cytoplasmic linings do not end at the margins of the figure; they may cover more than half of an alveolus. Only the lateral cytoplasmic extensions of the alveolar epithelial cells cover those parts of the pulmonary capillaries where the gas exchange between air and blood takes place. These areas are the

-205-

Notes for this page

Add a new note
If you are trying to select text to create highlights or citations, remember that you must now click or tap on the first word, and then click or tap on the last word.
One moment ...
Default project is now your active project.
Project items
Notes
Cite this page

Cited page

Style
Citations are available only to our active members.
Buy instant access to cite pages or passages in MLA 8, MLA 7, APA and Chicago citation styles.

(Einhorn, 1992, p. 25)

(Einhorn 25)

(Einhorn 25)

1. Lois J. Einhorn, Abraham Lincoln, the Orator: Penetrating the Lincoln Legend (Westport, CT: Greenwood Press, 1992), 25, http://www.questia.com/read/27419298.

Note: primary sources have slightly different requirements for citation. Please see these guidelines for more information.

Cited page

Bookmark this page
CIBA Foundation Symposium on Pulmonary Structure and Function
Table of contents

Table of contents

Settings

Settings

Typeface
Text size Smaller Larger Reset View mode
Search within

Search within this book

Look up

Look up a word

  • Dictionary
  • Thesaurus
Please submit a word or phrase above.
Print this page

Print this page

Why can't I print more than one page at a time?

Help
Full screen
Items saved from this book
  • Bookmarks
  • Highlights & Notes
  • Citations
/ 403

matching results for page

    Questia reader help

    How to highlight and cite specific passages

    1. Click or tap the first word you want to select.
    2. Click or tap the last word you want to select, and you’ll see everything in between get selected.
    3. You’ll then get a menu of options like creating a highlight or a citation from that passage of text.

    OK, got it!

    Cited passage

    Style
    Citations are available only to our active members.
    Buy instant access to cite pages or passages in MLA 8, MLA 7, APA and Chicago citation styles.

    "Portraying himself as an honest, ordinary person helped Lincoln identify with his audiences." (Einhorn, 1992, p. 25).

    "Portraying himself as an honest, ordinary person helped Lincoln identify with his audiences." (Einhorn 25)

    "Portraying himself as an honest, ordinary person helped Lincoln identify with his audiences." (Einhorn 25)

    "Portraying himself as an honest, ordinary person helped Lincoln identify with his audiences."1

    1. Lois J. Einhorn, Abraham Lincoln, the Orator: Penetrating the Lincoln Legend (Westport, CT: Greenwood Press, 1992), 25, http://www.questia.com/read/27419298.

    Cited passage

    Thanks for trying Questia!

    Please continue trying out our research tools, but please note, full functionality is available only to our active members.

    Your work will be lost once you leave this Web page.

    Buy instant access to save your work.

    Already a member? Log in now.

    Search by... Author
    Show... All Results Primary Sources Peer-reviewed

    Oops!

    An unknown error has occurred. Please click the button below to reload the page. If the problem persists, please try again in a little while.