annulospiral endings

annulospiral endings
wide, ribbonlike sensory nerve endings wrapped around the center of intrafusal fibers of a muscle spindle; called also primary e's. See also flower-spray e's.

Medical dictionary. 2011.

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  • flower-spray endings — branched sensory nerve endings on intrafusal fibers of muscle spindles; their axons are more slender than those of annulospiral endings and they are at more peripheral locations or are confined to nuclear fibers. Called also secondary e s …   Medical dictionary

  • primary endings — annulospiral e s …   Medical dictionary

  • Type Ia sensory fiber — also called Primary Afferent Fiber is a type of sensory fiber. It is a component of a muscle fiber s muscle spindle which keeps track of how fast a muscle stretch changes (the velocity of the stretch).Function of muscle spindlesIn order to… …   Wikipedia

  • ending — 1. A termination or conclusion. 2. A nerve e.. annulospiral e. one of two types of sensory nerve e. associated with a neuromuscular spindle (the other being the flower spray e.); after entering the muscle spindle, the fiber divides into two flat …   Medical dictionary

  • spindle — In anatomy and pathology, any fusiform cell or structure. [A.S.] aortic s. a fusiform dilation of the aorta immediately beyond the isthmus. SYN: His s.. central s. a central group of microtubules (continuous fib …   Medical dictionary

  • tract — An elongated area, e.g., path, track, way. SEE ALSO: fascicle. SYN: tractus. [L. tractus, a drawing out] alimentary t. SYN: digestive t.. anterior corticospinal t. uncrossed fibers forming a small bundle in the anterior funiculus of the …   Medical dictionary

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