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Spiny Dogfish Shark: Cranial Nerves
Cranial nerves
14
Biology
Undergraduate 1
02/27/2011
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Term
No. 0
 Definition
Terminal nerve; runs along length of olfactory tract
Term
No. I
 Definition
Olfactory nerve; arises in olfactory sac and ends in olfactory bulb
Term
No. II
 Definition
Optic nerve; comes out back of eye and carries info from retina to brain
Term
No. III
 Definition
Oculomotor nerve
Term
No. IV
 Definition
Trochlear nerve
Term
No. V
 Definition
Trigeminal nerve; innervates superficial opthalmic nerve
Term
Superficial opthalmic nerve
 Definition
runs on each side of snout; innervated by trigeminal nerve and facial nerve
Term
Deep opthalmic nerve
 Definition
Runs underneath superficial opthalmic nerve
Term
Infraorbital
 Definition
Runs across floor of orbit
Term
No. VI
 Definition
Abducens; innervates lateral rectus eye muscle
Term
No. VII
 Definition
Facial nerve; innervates superficial opthalmic nerve
Term
No. VIII
 Definition
Statoacoustic; innervates inner ear
Term
No. IX
 Definition
Glossopharyngeal; innervates anterior gills and pharynx
Term
No. X
 Definition
Vagus; innervates lateral line, gills, heart, abdominal organs
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