In particular, the cuneate nucleus gives rise to the cuneate tubercle, while the gracile nucleus gives rise to the gracile tubercle.
2.
At the level of the closed medulla oblongata, lower body axons synapse with neurons in the gracile nucleus ( nucleus gracilis ), and upper body axons synapse with neurons in the cuneate nucleus ( nucleus cuneatus ).
3.
The gracile nucleus is medial to the cuneate nucleus; its neurons receive afferent input from dorsal root ganglion sensory neurons subserving the lower trunk and limbs, while neurons of the cuneate nucleus receive connections from dorsal root neurons innervating the upper body.
4.
The gracile nucleus and fasciculus, which carries the same type of information, but from the upper body ( above T6, excepting the face and ear-the information from the face and ear is carried by the principal sensory nucleus of trigeminal nerve ).
5.
Some ascend for only a short distance in the tract, and, entering the gray matter, come into close relationship with the cells of the dorsal nucleus, while others can be traced as far as the medulla oblongata, where they end in the gracile nucleus and cuneate nucleus.
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