FIELDS H-1 and H-2 



Columns 29, 30, 31, 



32, 33, and 34 



15 Central nervous system, In toto . (For parts of the central nervous system, see Symbols 11- 



and 12-. ) 



134 Oculomotor nerve 



135 Trochlear nerve 



136 Trigeminal nerve 



137 Abducens nerve 



138 Facialis nerve (facial nerve) 



139 Auditory nerve (acoustic nerve) 

 13A Glossopharyngeal nerve 

 13B Vagus nerve 



13C Accessorius nerve (accessory nerve) 



13D Hypoglossal nerve 



13E Spinal nerves, in toto 



14 Autonomic nervous system, in toto 



141 Sympathetic nervous system, in toto 



142 Parasympathetic nervous system, in toto 



15 Central nervous sj 



and 12-. ) 



151 Meninges, in toto 



152 Dura mater, in toto 



153 Arachnoid membrane, in toto 



154 Pia mater, in toto 



155 Cerebrospinal fluid (cephalorachidian fluid or subarachnoid fluid) 



16 Specific peripheral nerve, unnamed 



161 Sciatic nerve 



162 Phrenic nerve 



163 Femoral nerve 



164 Radial nerve 



(17) Common nerve-organ preparations. (Use only one of the specific symbols, 17-, below.) 



171 Vagus- heart preparation 



172 Vagus- stomach preparation 



173 Sciatic-gastrocnemius preparation 



174 Phrenic-diaphragm preparation 



18 Sensory nerve, unspecified 



19 Motor nerve, unspecified 

 IJ Ganglion, unspecified 



IJl Spinal ganglion, unspecified 

 (1J2 



through (Reserved for specific spinal ganglia) 

 IJI) 



IJJ Autonomic ganglion, unspecified 

 (IJK 



through (Reserved for specific autonomic ganglia) 

 IJZ) 



IK Nerve plexus, unspecified 



XL Preganglionic fiber, unspecified 



IM Postganglionic fiber, unspecified 



2 Sense organs 



21 Eye; light receptor; eyespot; photoreceptor; stigma (exclusive of light receptors given 

 unique symbols below, such as ocellus, 21G, and compound eye, 21H, etc.) 



211 Retina; nervous tunic of eye 



212 Vitreous humor 



213 Aqueous humor 



214 Middle (vascular) tunic of eye, in toto 



215 Ciliary body, in toto 



216 Ciliary muscle 



217 Ciliary process 



218 Iris 



219 Choroid coat 

 21A Lens 



2 1 B Cornea 



21C Sclera 



99 



