Proprioceptive innervation in the orbital muscles of goat

ABSTRACT

The aim of this work was to study the proprioceptive innervation of the orbital muscles of goat. Typical muscle spindles were found in the medial rectus, lateral rectus and superior oblique muscles. Each spindle consisted of number of intrafusal fibers and definite capsule. Semi-thin sections in the cranial three, four and six close to the brain stem were prepared and the diameters of the myelinated fibers measured and counted in 2 mu intervals. The three cranial nerves contained fibers ranging from 2 to 18 mu which indicated that the proprioceptive fibers from the orbital muscles pass to brain stem via these nerves