T1 Nerve

T1 is the primary source of sympathetic innervation to the . These preganglionic sympathetic fibers ascend the sympathetic chain to synapse in the Superior Cervical Ganglion. From there, they travel on blood vessels to reach the eye.

Perhaps the most clinically distinct role of T1 is its contribution to the autonomic nervous system. Before splitting into rami, the T1 nerve sends a white ramus communicans to the sympathetic chain. t1 nerve