Sensory and motor innervation of bird intrafusal muscle fibers |
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| Institution: | 1. CNR-INM (ex CNR-INSEAN), Institute of Marine Engineering, National Research Council of Italy, Via di Vallerano 139, Roma 00128, Italy;2. Department of Mechanical and Aerospace Engineering, The George Washington University, 800 22nd Street, N.W., Washington, DC 20052, USA |
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| Abstract: | - 1.1. Most bird muscle spindles are supplied by only one primary afferent.
- 2.2. Secondary afferents occur irregularly.
- 3.3. Sensory terminals are covered by a basal lamina and a collagenous sheath.
- 4.4. Two types of motor terminal are recognized which can be referred to specific types of intrafusal fiber.
- 5.5. The sensory and motor innervation of bird intrafusal fibers is less understood than that of mammalian intrafusal fibers.
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