File:Ascariasis LifeCycle lg.jpg
Jump to navigation
Jump to search
Size of this preview: 652 × 599 pixels. Other resolutions: 261 × 240 pixels | 522 × 480 pixels | 836 × 768 pixels | 1,114 × 1,024 pixels | 2,000 × 1,838 pixels.
Original file (2,000 × 1,838 pixels, file size: 667 KB, MIME type: image/jpeg)
Captions
Captions
Add a one-line explanation of what this file represents
Summary
[edit]
| Description | This is an illustration of the life cycle of Ascaris lumbricoides, the causal agent of ascariasis. Adult worms image live in the lumen of the small intestine. A female may produce approximately 200,000 eggs per day, which are passed with the feces image . Unfertilized eggs may be ingested but are not infective. Larvae develop to infectivity within fertile eggs after 18 days to several weeks image , depending on the environmental conditions (optimum: moist, warm, shaded soil). After infective eggs are swallowed image , the larvae hatch image , invade the intestinal mucosa, and are carried via the portal, then systemic circulation to the lungs image . The larvae mature further in the lungs (10 to 14 days), penetrate the alveolar walls, ascend the bronchial tree to the throat, and are swallowed image . Upon reaching the small intestine, they develop into adult worms. Between 2 and 3 months are required from ingestion of the infective eggs to oviposition by the adult female. Adult worms can live 1 to 2 years. |
| Source | https://www.cdc.gov/dpdx/ascariasis/index.html https://www.cdc.gov/dpdx/ascariasis/modules/Ascariasis_LifeCycle_lg.jpg |
| Author | DPDx is an educational resource designed for health professionals and laboratory scientists. For an overview including prevention, control, and treatment visit www.cdc.gov/parasites/. |
Licensing
[edit]
|
This file, which was originally posted to an external website, has not yet been reviewed by an administrator or reviewer to confirm that the above license is valid. See Category:License review needed for further instructions.
|
Licensing
[edit]
|
This work is in the public domain in the United States because it is a work prepared by an officer or employee of the United States Government as part of that person’s official duties under the terms of Title 17, Chapter 1, Section 105 of the US Code.
Note: This only applies to original works of the Federal Government and not to the work of any individual U.S. state, territory, commonwealth, county, municipality, or any other subdivision. This template also does not apply to postage stamp designs published by the United States Postal Service since 1978. (See § 313.6(C)(1) of Compendium of U.S. Copyright Office Practices). It also does not apply to certain US coins; see The US Mint Terms of Use.
|
 |
| This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. | ||
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 11:56, 16 September 2019 | | 2,000 × 1,838 (667 KB) | Rasbak (talk | contribs) | {{Information |description=This is an illustration of the life cycle of ''Ascaris lumbricoides'', the causal agent of ascariasis. |source=https://www.cdc.gov/dpdx/ascariasis/index.html https://www.cdc.gov/dpdx/ascariasis/modules/Ascariasis_LifeCycle_lg.jpg |date= |author=DPDx is an educational resource designed for health professionals and laboratory scientists. For an overview including prevention, control, and treatment visit www.cdc.gov/parasites/. |permission= |other versions= }} =={{in... |
You cannot overwrite this file.
File usage on Commons
The following page uses this file:
File usage on other wikis
The following other wikis use this file:
- Usage on nl.wikipedia.org
