NEET PG DENTAL EXAM

Detailed explanation-1: -The cervical plexus is a complex neurologic structure located within the head and neck . The large portion of the cervical plexus is the communication between the anterior divisions of C1 through C4 nerves.

Detailed explanation-2: -The phrenic nerve: The phrenic nerve originates chiefly from the 4th cervical nerve (C4) but receives contributions from the 3rd and 5th cervical nerves (C3 and C5). It is formed at the superior part of the lateral border of the anterior scalene muscle, at the level of the superior border of the thyroid cartilage.

Detailed explanation-3: -The cervical plexus is made up of nerves originating from the cervical spine’s ventral rami from C1 to C4. These rami are located deep to the sternocleidomastoid muscles, lateral to the transverse processes.

Detailed explanation-4: -The transverse cervical nerve, of C2 and C3, projects posteriorly and wraps around anteriorly to supply the skin of the anterior cervical region. The supraclavicular nerve, of C3 and C4, descends from the posterior sternocleidomastoid and provides sensory information from the skin over the clavicle and shoulder.