Cervical Plexus Nerves- nerve roots: C1-C5

ansa cervialis

innervate most of the infrahyoid muscles, including the sternothyroid muscle, sternohyoid muscle, and the omohyoid muscle.

lesser occipital nerve (C2-C3)

It innervates the scalp in the lateral area of the head posterior to the ear.

phrenic nerve (C3-C5)

It is important for breathing, as it passes motor information to the diaphragm and receives sensory information from it.

Great auricular nerve (C2, C3)

It provides sensory innervation for the skin over parotid gland and mastoid process, and both surfaces of the outer ear.

supraclavicular nerve (C3-C4)

superficial sensory nerve

transverse cervical nerve

that innervates the skin covering the anterior cervical region.