Abstract:
:Motor nerve supplies to 15 poles of rat lumbrical spindle were reconstructed from serial, 1-micron transverse sections of muscle embedded in resin. Neural and muscular elements associated with the modulation of static sensitivity of afferents were deficient in these spindles relative to cat tenuissimus and rat soleus spindles. Rat lumbrical spindles contained fewer static fusimotor axons, fewer static chain intrafusal fibers, fewer motor-innervated static bag2 and chain fibers and fewer secondary afferents. The sparsity of static elements in spindles of the rat lumbrical muscle may correlate with the distal location or with the delicate motor tasks performed by the muscle.
journal_name
Neurosci Lettjournal_title
Neuroscience lettersauthors
Walro JM,Kucera Jdoi
10.1016/0304-3940(85)90149-1subject
Has Abstractpub_date
1985-09-06 00:00:00pages
303-7issue
3eissn
0304-3940issn
1872-7972pii
0304-3940(85)90149-1journal_volume
59pub_type
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