NEET PG DENTAL EXAM

Detailed explanation-1: -This nerve supplies the sternocleidomastoid and trapezius muscles, which have the following functions: Rotation of head away from the side of the contracting sternocleidomastoid muscle. Tilting of the head toward the contracting sternocleidomastoid muscle. Flexion of the neck by both sternocleidomastoid muscles.

Detailed explanation-2: -The accessory nerve, also known as the eleventh cranial nerve, cranial nerve XI, or simply CN XI, is a cranial nerve that supplies the sternocleidomastoid and trapezius muscles. It is classified as the eleventh of twelve pairs of cranial nerves because part of it was formerly believed to originate in the brain.

Detailed explanation-3: -After the rootlets fuse, the spinal accessory nerve travels cranially behind the dentate ligaments of the spinal cord. They travel parallel to the spinal cord and enter the cranial vault via the foramen magnum.

Detailed explanation-4: -The Anatomy-Summary The spinal accessory nerve is the eleventh cranial nerve. It is a motor nerve (somatic motor) innervating two muscles-the sternocleidomastoid and trapezius.