**Question:** Kisselback's plexus is situated on the:

A. Submandibular region
B. Submental region
C. Posterior triangle of the neck
D. Submandibular gland

**Core Concept:** Kisselback's plexus is a group of nerves that play a crucial role in the innervation of the salivary glands, particularly the submandibular gland. These nerves are derived from the cervical sympathetic chain and are part of the superior cervical ganglion.

**Why the Correct Answer is Right:** Kisselback's plexus is situated on the posterior triangle of the neck, which is the region between the submandibular gland, the submandibular gland, and the stylohyoid muscle. This location ensures the proper innervation of the submandibular gland and its surrounding structures.

**Why Each Wrong Option is Incorrect:**

A. Submandibular region: This option is incorrect because the submandibular gland is not directly related to Kisselback's plexus. The plexus is situated in the posterior triangle of the neck, not the submandibular region.

B. Submental region: This option is incorrect as the submental region is the area beneath the chin, which is not the location of Kisselback's plexus. The plexus is situated in the posterior triangle of the neck, as mentioned before.

C. Submandibular gland: This option is incorrect because Kisselback's plexus is part of the superior cervical ganglion, which provides sympathetic innervation to the submandibular gland. However, the plexus itself is located on the posterior triangle of the neck.

D. Submandibular gland: This option is incorrect as well, although it is closer to the correct answer. The submandibular gland is innervated by Kisselback's plexus, but the plexus itself is situated in the posterior triangle of the neck.

**Clinical Pearl:** Understanding the location of Kisselback's plexus is essential for understanding the sympathetic innervation of the submandibular gland and the surrounding structures. This information is important for clinical practice, as it helps in assessing and managing conditions affecting the salivary glands and their innervation.

**Correct Answer:** Cervical sympathetic ganglion (posterior triangle of the neck)

In summary, Kisselback's plexus is a group of sympathetic nerves located in the posterior triangle of the neck, which is part of the superior cervical ganglion. These nerves innervate the submandibular gland and other structures in the region, but the plexus itself is situated in the posterior triangle of the neck.