0
We're unable to sign you in at this time. Please try again in a few minutes.
Retry
We were able to sign you in, but your subscription(s) could not be found. Please try again in a few minutes.
Retry
There may be a problem with your account. Please contact the AMA Service Center to resolve this issue.
Contact the AMA Service Center:
Telephone: 1 (800) 262-2350 or 1 (312) 670-7827  *   Email: subscriptions@jamanetwork.com
Error Message ......
ARTICLE |

Alveolobronchiolar Transport Mechanisms

Gareth M. Green, MD
Arch Intern Med. 1973;131(1):109-114. doi:10.1001/archinte.1973.00320070105012.
Text Size: A A A
Published online

Transport of particles from alveolus to bronchiolar exit routes is a vital phase of defense mechanisms in the lung. Alveolar bronchiolar transport may occur along the surface of the alveolar and bronchiolar structures and through interstitial spaces and lymphatic channels. Cell and particle movement is directed (1) onto the bronchial lumen; (2) into subpleural and paraseptal positions; (3) to perivascular positions; and (4) movement to a peribronchial location. The energy for this cell and particle transport is more likely related to fluid transport along interstitial pathways than active ameboid motion. Transport pathways appear to be oriented radially around the terminal bronchiolar system, rather than longitudinally along air pathways. The several anatomic pathways of productive movement from the alveolus to the bronchiole or to lymphatics may account for the apparent clearance compartments found in radiotracer studies and experimental histologic studies. The location of pulmonary lymphoid nodules along the transport pathways provide a mechanism for local intrapulmonary antigen processing and antibody production. The availability of transport pathways directly from alveolus to bronchial surface provides a mechanism for rapid exit of particles and cells from alveolar tissue.

Topics

Sign in

Create a free personal account to sign up for alerts, share articles, and more.

Purchase Options

• Buy this article
• Subscribe to the journal

First Page Preview

View Large
First page PDF preview

Figures

Tables

References

Correspondence

CME
Also Meets CME requirements for:
Browse CME for all U.S. States
Accreditation Information
The American Medical Association is accredited by the Accreditation Council for Continuing Medical Education to provide continuing medical education for physicians. The AMA designates this journal-based CME activity for a maximum of 1 AMA PRA Category 1 CreditTM per course. Physicians should claim only the credit commensurate with the extent of their participation in the activity. Physicians who complete the CME course and score at least 80% correct on the quiz are eligible for AMA PRA Category 1 CreditTM.
Note: You must get at least of the answers correct to pass this quiz.
Please click the checkbox indicating that you have read the full article in order to submit your answers.
Your answers have been saved for later.
You have not filled in all the answers to complete this quiz
The following questions were not answered:
Sorry, you have unsuccessfully completed this CME quiz with a score of
The following questions were not answered correctly:
Commitment to Change (optional):
Indicate what change(s) you will implement in your practice, if any, based on this CME course.
Your quiz results:
The filled radio buttons indicate your responses. The preferred responses are highlighted
For CME Course: A Proposed Model for Initial Assessment and Management of Acute Heart Failure Syndromes
Indicate what changes(s) you will implement in your practice, if any, based on this CME course.
Submit a Comment

Multimedia

Some tools below are only available to our subscribers or users with an online account.

Sign in

Create a free personal account to sign up for alerts, share articles, and more.

Purchase Options

• Buy this article
• Subscribe to the journal

Related Content

Customize your page view by dragging & repositioning the boxes below.

Jobs
brightcove.createExperiences();