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Branches of the Cervical Plexus 3D

  • Lesser Occipital Nerve
    • * Arises from the ventral rami of C2 and C3. Supplies sensory innervation to the skin of the posterior scalp.

 

  • Greater Auricular Nerve
    • * Arises from the ventral rami of C2 and C3. Supplies sensory innervation to the skin over the external ear, parotid region, and angle of the mandible.

 

  • Transverse Cervical Nerve
    • * Arises from the ventral rami of C2 and C3. Supplies sensory innervation to the anterior cervical region.

 

  • Supraclavicular Nerves
    • * Arise from the ventral rami of C3 and C4. These nerves are divided into three branches: medial, intermediate, and lateral.
    • * Supply sensory innervation to the skin over the clavicle, shoulder, and upper thoracic region.

 

  • Ansa Cervicalis​​​​​​​
    • * Formed by loops of fibers from the ventral rami of C1-C3.
    • * Consists of a superior root (from C1) and an inferior root (from C2-C3).
    • * Innervates the infrahyoid muscles, including the sternohyoid, omohyoid, and sternothyroid muscles.

 

  • Phrenic Nerve​​​​​​​
    • * Arises primarily from the ventral rami of C3-C5. Descends along the anterior scalene muscle and enters the thorax.
    • * Provides motor innervation to the diaphragm, and carries sensory fibers from the diaphragmatic pleura and peritoneum.

 

  • Spinal Accessory Nerve (CN XI)​​​​​​​
    • * Arises from the ventral roots of C1-C5 and the cranial root from the medulla.
    • * Exits the skull through the jugular foramen.
    • * Innervates the sternocleidomastoid and trapezius muscles, contributing to head and shoulder movements.

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  • Lesser Occipital Nerve
    • * Arises from the ventral rami of C2 and C3. Supplies sensory innervation to the skin of the posterior scalp.

 

  • Greater Auricular Nerve
    • * Arises from the ventral rami of C2 and C3. Supplies sensory innervation to the skin over the external ear, parotid region, and angle of the mandible.

 

  • Transverse Cervical Nerve
    • * Arises from the ventral rami of C2 and C3. Supplies sensory innervation to the anterior cervical region.

 

  • Supraclavicular Nerves
    • * Arise from the ventral rami of C3 and C4. These nerves are divided into three branches: medial, intermediate, and lateral.
    • * Supply sensory innervation to the skin over the clavicle, shoulder, and upper thoracic region.

 

  • Ansa Cervicalis​​​​​​​
    • * Formed by loops of fibers from the ventral rami of C1-C3.
    • * Consists of a superior root (from C1) and an inferior root (from C2-C3).
    • * Innervates the infrahyoid muscles, including the sternohyoid, omohyoid, and sternothyroid muscles.

 

  • Phrenic Nerve​​​​​​​
    • * Arises primarily from the ventral rami of C3-C5. Descends along the anterior scalene muscle and enters the thorax.
    • * Provides motor innervation to the diaphragm, and carries sensory fibers from the diaphragmatic pleura and peritoneum.

 

  • Spinal Accessory Nerve (CN XI)​​​​​​​
    • * Arises from the ventral roots of C1-C5 and the cranial root from the medulla.
    • * Exits the skull through the jugular foramen.
    • * Innervates the sternocleidomastoid and trapezius muscles, contributing to head and shoulder movements.

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