Mannu denoted all ganglia between superior cervical ganglion and inferior cervical ganglion as "intermediate ganglia."  Matsui had used the term "intermediate ganglion" as a synonym of "middle cervical ganglion."  Axford observed two ganglia between the superior cervical and the inferior cervical ganglia
and referred this as "high and low middle cervical ganglia
."  He described the lower one as a detached portion of either the middle or the inferior ganglion.
Cross-talk between the cardiac afferent nerves and cranial nerves through cervical ganglia
and spinal cord might have resulted in sensation of instantaneous headache during the PVCs.
 reported that the activation of goat superior cervical ganglia
(SCG) had increased arterial pressure.
Study of baicalin on sympathoexcitation induced by myocardial ischemia via P2X3 receptor in superior cervical ganglia
. Auton Neurosci 2015;189:8-15.
This study was performed to determine the arterial vessels of the cranial cervical ganglia
of 7 adult roe deer.
The second-order neuron connects the stellate and middle cervical ganglia
and terminates in the superior cervical ganglia
The pineal of mammals is innervated by sympathetic fibers originating from the superior cervical ganglia
of the paravertebral chain (Beltran), this ganglia origin major differences arriving in the pineal under the name nervi conarii (Macchi & Bruce; Cignolani & Houssay, 2002).