Cranial Nerves

Question 1

Runs from olfactory epithelium to forebrain, consists of the axons of neurosensory cells

Answer 1

CN I/Olfactory -special sensory

Question 2

Brain tract, not a nerve

Answer 2

CN II/ Optic, special sensory

Question 3

Connects inner ear to hindbrain

Answer 3

CN VIII/ Statoacoustic/Vestibulocochlear (mammals), special sensory

Question 4

Evidence that special sensory are not the same as modified spinal

Answer 4

Neurons develop from placodes, lack distinct ganglia

Question 5

Innervates nasal mucosa, vestigial in humans

Answer 5

CN 0/Terminal, dorsal modified spinal

Question 6

Branch of V that carries General SS from skin on top of head

Answer 6

V1/ophthalmic/profundus; dorsal modified spinal

Question 7

Carries SS, and VS to mouth and oral glands, SM to hyoid arch muscles

Answer 7

VII/Facial dorsal modified spinal

Question 8

Carries SS from skin, SM from muscles of 3rd pharyngeal arch, VS from pharynx and base of tongue, SS from lateral line system

Answer 8

CN IX/Glossopharyngeal; dorsal modified spinal

Question 9

SM to 4th-7th pharyngeal arches, VM to viscera, VS from viscera

Answer 9

CN X/Vagus; modified dorsal spinal

Question 10

SM to extrinsic ocular muscles; associated with V1

Answer 10

CN III/Oculomotor, ventral modified spinal

Question 11

SM to extrinsic ocular muscles; associated with CN VIII

Answer 11

CN VI/Abducens; ventral modified spinal

Question 12

SM to tongue muscles in Tetrapoda

Answer 12

CN XII/Hypoglossal; modified ventral spinal, associated with X

Question 13

Branch of V that carries general SS from skin of jaw and SM to mandibular arch muscles

Answer 13

V3/Mandibular; dorsal modified spinal

Question 14

Branch of V that carries general SS from upper jaw region

Answer 14

V2/Maxillary, dorsal modified spinal