Neck Neurology

Question 1

Cranial Nerves in Neck (3)

Answer 1

Vagus N (CN X)
Spinal Accessory N (CN XI)
Hypoglossal N (CN XII)
Carries C1 Anterior Ramus

Question 2

Vagus Nerve Branches (3)

Answer 2

Pharyngeal Branch
Superior Laryngeal N

Recurrent Laryngeal N
Continues as Inferior Laryngeal N

Question 3

Superior Laryngeal Nerve Branches (2)

Answer 3

Internal Laryngeal N

External Laryngeal N

Question 4

Cervical Plexus Nerves (6) and Roots

Answer 4

C1 - Superior Root of Ansa Cervicalis
C2 - Lesser Occipital N
C2/C3 - Inferior Root of Ansa Cervicalis 
C2/C3 - Great Auricular N
C3/C4 - Supraclavicular Ns

C3-C5 - Phrenic N

Question 5

Cervical Sympathetic Trunk

Ganglia (3) and Lesion Effects

Answer 5

Superior Cervical Ganglion
Middle Cervical Ganglion
Inferior Cervical Ganglion

Lesion to trunk causes Horner Syndrome
   Enopthalmos
   Ptosis
   Anhydrosis
   Miosis

Question 6

Carotid Bodies Function

Answer 6

Chemoreceptors monitoring O2 content of blood