The cervicothoracic ganglion, also known as the stellate ganglion, is a cluster of nerves in the neck that connects the sympathetic nervous system to the thorax. There are several synonyms for this term, including the cervicodorsal ganglion, cervical ganglion, and thoracic ganglion. Additionally, the sympathetic chain ganglia, the paravertebral ganglia, and the sympathetic trunk are all interconnected with the cervicothoracic ganglion. The function of this ganglion is to control the body's involuntary responses, such as heart rate and blood pressure, as well as the dilation of blood vessels and the constriction of airways. Overall, the cervicothoracic ganglion plays a crucial role in regulating various bodily functions.