Ronald A. Bergman, Ph.D., Adel K. Afifi, M.D., Paul M. Heidger,
Peer Review Status: Externally Peer Reviewed
Rabbit, formic acid-gold chloride, 162 x.
Axon: Myelinated axons break into primary, secondary, and tertiary branches. Unmyelinated branches from these axons wind around and in between tendon fascicles.
Tendon: Collagenous connective tissue bundle joined to several muscle fibers.
Muscle fibers: Skeletal (striated) muscle fibers.
Tension receptor organ (Golgi tendon organ): Discharges electrical impulses in response to tension on the tendon produced by either muscular contraction or muscle stretch. Provides information about the state of the muscle tension that determines in part the response of the central nervous system in the appropriate use of the muscle or muscles for precise motor function. Afferent impulses from Golgi tendon organs are conveyed to the central nervous system via lb nerve fibers, which exert presynaptic inhibition on the la nerve fibers originating in the muscle spindle.
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