Stellate ganglion is seen in-
**Core Concept**
The stellate ganglion is a sympathetic ganglion located in the neck, playing a crucial role in the autonomic nervous system. It is formed by the fusion of the inferior cervical ganglion and the first thoracic ganglion, and it provides sympathetic innervation to the head and upper limb.
**Why the Correct Answer is Right**
The stellate ganglion is situated in the neck, specifically at the junction of the lower cervical and upper thoracic spine, and it is formed by the fusion of the inferior cervical ganglion and the first thoracic ganglion. This ganglion is responsible for providing sympathetic innervation to the head and upper limb through its branches, including the superior cervical cardiac nerve, the middle cervical cardiac nerve, and the inferior cervical cardiac nerve. The stellate ganglion is also involved in the regulation of blood flow and vasodilation in the upper limb.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect as it does not accurately describe the location of the stellate ganglion.
**Option B:** This option is incorrect as it is not a recognized location for the stellate ganglion.
**Option C:** This option is incorrect as it is not related to the stellate ganglion.
**Clinical Pearl / High-Yield Fact**
The stellate ganglion block is a procedure used to provide relief from pain and vasospasm in the upper limb, and it involves the injection of a local anesthetic into the stellate ganglion.
**Correct Answer: C. The stellate ganglion is seen in the neck.**