Jump to content

File:Schistosomiasis Life Cycle.png

Page contents not supported in other languages.
This is a file from the Wikimedia Commons
From Wikipedia, the free encyclopedia

Original file (2,936 × 2,342 pixels, file size: 1.94 MB, MIME type: image/png)

Description
English: Eggs are eliminated with feces or urine (1). Under optimal conditions the eggs hatch and release miracidia (2), which swim and penetrate specific snail intermediate hosts (3). The stages in the snail include 2 generations of sporocysts (4) and the production of cercariae (5). Upon release from the snail, the infective cercariae swim, penetrate the skin of the human host (6), and shed their forked tail, becoming schistosomulae (7). The schistosomulae migrate through several tissues and stages to their residence in the veins (8,9). Adult worms in humans reside in the mesenteric venules in various locations, which at times seem to be specific for each species (10). For instance, S. japonicum is more frequently found in the superior mesenteric veins draining the small intestine [A], and S. mansoni occurs more often in the superior mesenteric veins draining the large intestine [B]. However, both species can occupy either location, and they are capable of moving between sites, so it is not possible to state unequivocally that one species only occurs in one location. S. haematobium most often occurs in the venous plexus of bladder [C], but it can also be found in the rectal venules. The females (size 7 to 20 mm; males slightly smaller) deposit eggs in the small venules of the portal and perivesical systems. The eggs are moved progressively toward the lumen of the intestine (S. mansoni and S. japonicum) and of the bladder and ureters (S. haematobium), and are eliminated with feces or urine, respectively (1).
Date
Source CDC DPDx
Author Unknown authorUnknown author
Other versions
improved vector version, German
Public domain This image is a work of the United States Department of Health and Human Services, taken or made as part of that person's official duties. As a work of the U.S. federal government, the image is in the public domain.

Original upload log

This image is a derivative work of the following images:

  • File:Schistosomiasis_Life_Cycle.jpeg licensed with PD-USGov-HHS
    • 2009-09-02T05:15:25Z Gzuckier 3150x2400 (697710 Bytes) same pic, higher resolution
    • 2005-07-10T00:44:22Z Salvadorjo 700x533 (62433 Bytes) Life cycle of schistosomiasis parasite. US Federal Government public domain archive image. Source: CDC {{PD}} [[Category:Schistosoma]]

Uploaded with derivativeFX

Captions

Add a one-line explanation of what this file represents

Items portrayed in this file

depicts

21 September 2010

image/png

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current21:05, 21 September 2010Thumbnail for version as of 21:05, 21 September 20102,936 × 2,342 (1.94 MB)Leyo{{Information |Description={{en|Eggs are eliminated with feces or urine (1). Under optimal conditions the eggs hatch and release miracidia (2), which swim and penetrate specific snail intermediate hosts (3). The stages in the snail include 2 generations o

Global file usage

The following other wikis use this file: