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Fasciculus cuneatus is 3a, in blue at upper right.
Latin f. gracilis medullae spinalis
subject #185 762
Diagram of the principal fasciculi of the spinal cord.
fasciculus gracilis ( tract of Goll) is wedge-shaped on transverse section, and lies next the posterior median septum, its base being at the surface of the medulla spinalis, and its apex directed toward the posterior gray commissure.
It increases in size from below upward, and consists of long thin fibers which are derived from the
posterior nerve roots, and ascend as far as the medulla oblongata, where they end in the nucleus gracilis. It brings in sensory impulses from lower body.
Additional images Edit
Decussation of pyramids.
Superficial dissection of brain-stem. Lateral view.
Superior terminations of the posterior fasciculi of the medulla spinalis.
The sensory tract.
Upper part of medulla spinalis and hind- and mid-brains; posterior aspect, exposed in situ.
External links Edit
This article was originally based on an entry from a
public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.
epidural space, dura mater, subdural space, arachnoid mater, subarachnoid space, pia mater, denticulate ligaments, conus medullaris, cauda equina, filum terminale, cervical enlargement, lumbar enlargement, anterior median fissure, dorsal root, dorsal root ganglion, dorsal ramus, ventral root, ventral ramus, sympathetic trunk, gray ramus communicans, white ramus communicans
grey matter: central canal, substantia gelatinosa of Rolando, reticular formation, substantia gelatinosa centralis, interneuron, anterior horn, lateral horn, posterior horn ( column of Clarke, dorsal spinocerebellar tract)
white matter: anterior funiculus: descending ( anterior corticospinal tract, vestibulospinal fasciculus, tectospinal tract), ascending ( anterior spinothalamic tract, anterior proper fasciculus)
lateral funiculus: descending ( lateral corticospinal tract, rubrospinal tract, olivospinal tract), ascending dorsal spinocerebellar tract, ventral spinocerebellar tract, spinothalamic tract, lateral spinothalamic tract, anterior spinothalamic tract, spinotectal tract, posterolateral tract, lateral proper fasciculus, medial longitudinal fasciculus
posterior funiculus: fasciculus gracilis, fasciculus cuneatus, posterior proper fasciculus