Linked Life Data

2953871

Source:http://linkedlifedata.com/resource/pubmed/id/2953871

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
1987-7-13
pubmed:abstractText
Forty-two complete spindle poles of cat superficial lumbrical muscles were analyzed with particular regard to the length and the diameter of intrafusal fiber types. Poles were reconstructed from serial transverse sections of fresh-frozen muscles. The staining module, which was repeated throughout the whole muscle, comprised sections treated for glycogen detection and sections treated for detecting myofibrillar ATPase activity after preincubation at three different pH's (see METHODS). The identification of intrafusal fiber types was essentially based on the ATPase activity of the B region of the intrafusal fibers. Long-chain fibers, i.e., chain fibers that have at least one pole that extends by more than one millimeter beyond the end of the spindle capsule (6), were very commonly observed. Of 42 spindle poles analyzed, 30 (71%) contained at least one long-chain fiber (one in 17 spindle poles, 2 in 11 poles, and 3 in 2 poles). Of 246 poles of chain fibers, 45 (18%) were "long". In four spindles, in which both poles could be completely examined, 10 long-chain fibers were observed. In eight of these, only one pole was long; the opposite pole ended either intracapsularly or at a short distance outside the capsule. Since long-chain fiber poles, presently considered to be among the effectors of static skeletofusimotor (beta) axons, are present in a large proportion of muscle spindles of lumbrical muscles, it would be of particular interest to reevaluate the beta-supply of these muscles by physiological methods.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
0022-3077
pubmed:author
pubmed:issnType
Print
pubmed:volume
57
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1050-9
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1987
pubmed:articleTitle
High incidence of long-chain fibers in spindles of cat superficial lumbrical muscles.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't