Cervical dermatomes and myotomes — Flashcards

Flashcard 1: If only one tract (fasciculus) is present in the dorsal column, the spinal cord is _____ T6

Answer: below

Flashcard 2: Nerves C1–C7 exit _____ their corresponding vertebrae

Answer: above

Extra: Cervical nerves **C1–C7** exit **above** (superior to) their corresponding vertebrae. Nerve **C8** exits **below** the C7 vertebra (and above the T1 vertebra). All spinal nerves from **T1 downwards** exit **below** (inferior to) their corresponding vertebrae.

Flashcard 3: Horner syndrome presents with ptosis due to denervation of the _____ muscle

Answer: superior tarsal

Flashcard 4: Which cranial nerve is responsible for the efferent limb of the lacrimation reflex? _____

Answer: CN VII

Flashcard 5: What dermatome includes the thumbs? _____

Answer: C6

Flashcard 6: The ansa cervicalis innervates the _____ muscles of the anterior neck (*except)

Answer: strap (infrahyoid)