Middle cervical ganglion

The middle cervical ganglion is the smallest of the three cervical ganglia, and is occasionally absent.

It is placed opposite the sixth cervical vertebra, usually in front of, or close to, the inferior thyroid artery.

It is probably formed by the coalescence of two ganglia corresponding to the fifth and sixth cervical nerves.

It sends gray rami communicantes to the fifth and sixth cervical nerves, and gives off the middle cardiac nerve.