Linked Life Data

19619994

Source:http://linkedlifedata.com/resource/pubmed/id/19619994

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
2009-9-14
pubmed:abstractText
The arrangement of the ruminant stomach in four gastric compartments with specialized mucosal papillae along the gastric groove (GG) has been previously described. However, a debate remains about functional implications of these morphological pecularities. This study was aimed to elucidate the relation between the papillar morphology and its putative functions. The GG was obtained from adult bovine stomachs (n=10) and subdivided into (1) proximal, (2) middle, (3) distal portion of the reticular groove (RG) and (4) the area of the reticulo-omasal sphincter (ROS). The specimens were processed for scanning electron microscopy and stereomicroscopy to analyze the density, shape and location of the papillae. Whereas the proximal portion of the RG was characterized by small (1.5mm), conically shaped, smooth papillae, the middle portion exhibited larger papillae (4mm) with sharp borders covered by keratin. Towards the ROS the papillae further increased in size (3-11mm) and showed compound or single processes resembling the shape of arrows, twisted hooks or thorns (unguiculliform papillae). At the ROS the unguiculliform papillae were distributed in clusters groups and along the border of the sphincter. Due to their peculiar morphological features it is suggested that unguiculliform papillae functions as a filter barrier preventing the passage of large-sized food particles into the omasum and avoiding subsequent obstruction of both the RG and the ROS. The data give further evidence that unguiculliform papillae are actively involved in the complex mechanisms of food processing taking place within the ruminant pluricavity stomach.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Nov
pubmed:issn
1618-0402
pubmed:author
pubmed:issnType
Electronic
pubmed:volume
191
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
469-76
pubmed:meshHeading
pubmed:year
2009
pubmed:articleTitle
Functional morphology of unguiculiform papillae of the reticular groove in the ruminant stomach.
pubmed:affiliation
Institute of Biology, Federal University of Pelotas, Pelotas, RS, CEP 96010-900, Brazil.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't