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nerves Flashcards

1
Q

Olfactory (CN I)

A

olfactory nerve cell bodies lie in mucosa, binds with odorants in layer of mucos and transmits info to olfactory bulb through cribiform plate

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2
Q

Optic n. (CNII)

A

carries visual sensory information from the neural retina to the diencephalon & midbrain; includes optic chiasm and optic tract (same as optic nerve), which travels through the optic canal

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3
Q

Optic chiasm

A

anatomical site where axons arising from the nasal (medial) half of the retina cross the midline to the contralateral optic tract

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4
Q

Oculomotor n. (CNIII)

A

passes through superior orbital fissure, includes superior and inferior ramus

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5
Q

Superior Ramus of Oculomotor Nerve

A

muscular branches have sensory [communication from the ophthalmic nerve in the superior orbital fissure], postganglionic sympathetic [communication from the internal carotid plexus in the cavernous sinus] & motor (lmn) innervation [oculomotor nucleus of the midbrain] of the superior rectus and levator palpebrae superioris muscles

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6
Q

Inferior Ramus of Oculomotor Nerve

A

includes muscular branches and parasympathetic communication to the cillary ganglion

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7
Q

muscular branches of inferior ramus of oculomotor nerve

A

sensory [communication from the ophthalmic nerve in the superior orbital fissure], postganglionic sympathetic [communication from the internal carotid plexus in the cavernous sinus] & motor (lmn) innervation [oculomotor nucleus of the midbrain] of the medial rectus, inferior rectus and inferior oblique muscles

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8
Q

Parasympathetic communication to the ciliary ganglion

A

comes off of inferior ramus of oculomotor nerve, preganglionic parasympathetic innervation [Edinger-Westphal nucleus of the midbrain] of the ciliary ganglion [the postganglionic parasympathetic axons travel with the short ciliary nerves [branches of the ophthalmic division of the trigeminal nerve] and innervate the ciliary body and constrictor muscle of the iris]

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9
Q

Trochlear n. (CNIV) [L. pulley]

A

passes through superior orbital fissure, sensory [communication from the ophthalmic nerve in the superior orbital fissure], postganglionic sympathetic [communication from the internal carotid plexus in the cavernous sinus] & motor (lmn) innervation [trochlear nucleus of the midbrain] of the superior oblique muscle

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10
Q

Trigeminal n. (CNV)

A

includes ophthalmic, maxillary, and mandibular nerve

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11
Q

Ophthalmic n.

A

sensory, & postganglionic sympathetic [communication from the internal carotid plexus in the cavernous sinus] innervation of skin (forehead, upper lid & nose), cornea, mucosa (nasal cavity) & extraocular muscles, passes through superior orbital fissure and splits into lacrimal, frontal, and nasociliary nerve

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12
Q

lacrimal nerve

A

branches off of ophthalmic nerve, sensory & postganglionic sympathetic [communication from the internal carotid plexus in the cavernous sinus] innervation of the lacrimal gland and the skin overlying the lateral aspect of the upper lid, and forehead & postganglionic parasympathetic innervation of the lacrimal gland [communication from the pterygopalatine ganglion via the zygomatic nerve]

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13
Q

Frontal nerve

A

branches off of ophthalmic nerve, divides into supraorbital and supratrochlear nerve

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14
Q

supraorbital nerve

A

branches off of frontal nerve, sensory & postganglionic sympathetic [communication from the internal carotid plexus in the cavernous sinus] innervation of the skin overlying the forehead, passes through supraorbital foramen

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15
Q

Supratrochlear n.

A

branches off of frontal nerve, sensory & postganglionic sympathetic innervation [communication from the internal carotid plexus in the cavernous sinus] of the skin overlying the medial aspect of the forehead

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16
Q

nasociliary nerve

A

branches off of ophthalmic nerve, includes anterior ethmoidal, posterior ethmoidal, long ciliary, short ciliary, and infratrochlear nerves

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17
Q

Anterior ethmoidal n

A

branches off of nasociliary, passes through anterior ethmodial foramen, sensory & postganglionic sympathetic [communication from the internal carotid plexus in the cavernous sinus] the mucosa of the superior aspect of the nasal cavity, the skin overlying the nose

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18
Q

Posterior ethmoidal n.

A

branches off of nasociliary, passes through posterior ethmodial foramen, sensory & postganglionic sympathetic [communication from the internal carotid plexus in the cavernous sinus] innervation of the mucosa of the superior nasal cavity

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19
Q

Long ciliary n.

A

branches off of nasociliary nerve, sensory & postganglionic sympathetic [communication from the internal carotid plexus in the cavernous sinus] innervation of the eye, and postganglionic sympathetic innervation of the dilator muscle of the iris

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20
Q

Short ciliary n.

A

branches off of nasociliary nerve, sensory & postganglionic sympathetic [communication from the internal carotid plexus in the cavernous sinus] innervation of the eye, and postganglionic sympathetic & postganglionic parasympathetic [axons arise from ciliary ganglion] innervation of the dilator [sympathetic] and constrictor [parasympathetic] muscles of the iris

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21
Q

Infratrochlear n.

A

branches off of nasociliary nerve, sensory & postganglionic sympathetic [communication from the internal carotid plexus in the cavernous sinus] innervation of the skin overlying the bridge of the nose

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22
Q

Maxillary n.

A

branches off of trigeminal nerve, sensory, & postganglionic sympathetic [communication from the internal carotid plexus in the cavernous sinus & n. of pterygoid canal] innervation of skin (lower lid, nose, upper lip, cheek & cheekbone), mucosa (nasal cavity, oral cavity & pharynx) & dental pulp (upper teeth), includes pterygopalatine nerves, zygomatic n, posterior superior alveolar n, and infraorbital n

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23
Q

Pterygopalatine nerves

A

branches off of maxiliary nerve, emerge from pteroygopalatine ganglion, includes pharyngeal, lateral posterior superior nasal, medial posterior superior nasal, greater palatine, and lesser palatine nerves

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24
Q

Pharyngeal n. (CNV2)

A

branches off of maxiliary nerve, sensory, postganglionic sympathetic [communication from nerve of the pterygoid canal] & postganglionic parasympathetic [axons arise from pterygopalatine ganglion] innervation of the mucosa of the nasal pharynx & auditory tube, passes through palatovaginal canal

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25
Lateral posterior superior nasal n.
branches off of maxillary nerve, sensory, postganglionic sympathetic [communication from nerve of the pterygoid canal] & postganglionic parasympathetic [axons arise from pterygopalatine ganglion] innervation of the mucosa of the lateral wall of the nasal cavity, passes through sphenopalatine foramen
26
Medial (septal) posterior superior nasal n.
branches off of maxillary nerve, passes through sphenopalatine foramen, sensory, postganglionic sympathetic [communication from nerve of the pterygoid canal] & postganglionic parasympathetic [axons arise from pterygopalatine ganglion] innervation of the mucosa of the nasal septum and anterior hard palate and associated gingiva (nasopalatine n), nasopalatine branches off of it
27
nasopalatine nerve
branches off of medial posterior superior nasal nerve, passes through incisive fossa
28
Greater palatine n.
branches off of maxillary nerve, passes through greater palatine foramen into the hard palate, sensory, taste [greater petrosal], postganglionic sympathetic [communication from nerve of the pterygoid canal] & postganglionic parasympathetic [axons arise from pterygopalatine ganglion] innervation of the mucosa of the hard palate and associated gingiva
29
Lesser palatine n.
branches off of maxillary nerve, passes through lesser palatine nerve to the soft palate, sensory, taste [greater petrosal], postganglionic sympathetic [communication from nerve of the pterygoid canal] & postganglionic parasympathetic [axons arise from pterygopalatine ganglion] innervation of the mucosa (both oral/anterior and pharyngeal/posterior surfaces) of the soft palate
30
Zygomatic n. (CNV)
branches off of maxillary nerve, passes through inferior borbital fissure, sensory & postganglionic sympathetic [communication from the external carotid plexus] innervation of the skin overlying the zygomatic arch, and postganglionic parasympathetic [axons arise from pterygopalatine ganglion] innervation of the lacrimal gland [communicates with the lacrimal n.], branches into zygomaticotemporal and zygomaticofacial nerves in zygomatic arch
31
Posterior superior alveolar n.
branches off of maxillary nerve, passes through pterygomaxillary fissure, sensory & postganglionic sympathetic [communication from the external carotid plexus] innervation of the upper molars, and sensory, postganglionic sympathetic [communication from the external carotid plexus] & postganglionic parasympathetic innervation of mucosa of buccal gingiva
32
Infraorbital n.
branches off of maxillary nerve, passes through infraorbital groove and canal, sensory & postganglionic sympathetic [communication from the external carotid plexus] innervation of the skin of the upper lip, cheek, lateral nose and lower lid; and sensory, postganglionic sympathetic and postganglionic parasympathetic innervation of mucosa of the upper lip, labial gingival , middle superior alveolar and anterior superior alveolar nerves branch off of it
33
Middle superior alveolar n.
branches off of infraorbital nerve, passes through infraobrbital groove and canal, sensory & postganglionic sympathetic [communication from the external carotid plexus] innervation of the upper premolars and sensory, postganglionic sympathetic [communication from the external carotid plexus] & postganglionic parasympathetic innervation
34
Anterior superior alveolar n.
branches off of infraorbital nerve, passes through infraorbital groove and canal before passing to canine and incisors, sensory & postganglionic sympathetic [communication from the external carotid plexus] innervation of the upper canines and incisors and sensory, postganglionic sympathetic [communication from the external carotid plexus] & postganglionic parasympathetic
35
Mandibular n.
branches off of trigeminal nerve, sensory (skin [lower lip, chin, cheek, ear & temple], mucosa [oral cavity] & muscles of mastication), motor, & postganglionic sympathetic [communication from the external carotid plexus via maxillary a.], includes meningeal, muscular branches, and sensory branches
36
Meningeal branch
branches off of mandibular nerve, passes through foramen spinosum, sensory & postganglionic sympathetic [communication from the external carotid plexus] innervation of the cranial dura mater
37
muscular branches of mandibular nerve
includes nerve to the medial pterygoid, masseteric nerve, deep temporal nerve, and nerve to lateral pterygoid, nerve to mylohoid is also a muscular branch but branches off of inferior alveolar
38
sensory branches of mandibular nerve
includes long buccal, auriculotemporal, lingual, and inferior alveolar nerves, and mental and incisive nerves that branch off of inferior alveolar nerve
39
Nerve to the medial pterygoid
branches off of mandibular nerve, sensory, postganglionic sympathetic [communication from the external carotid plexus] & motor (lmn) [trigeminal motor nucleus of the pons] innervation of the medial pterygoid, tensor palatini and tensor tympani muscles
40
Masseteric n.
branches mandibular nerve, sensory, postganglionic sympathetic [communication from the external carotid plexus]& motor (lmn) [trigeminal motor nucleus of the pons] innervation of the masseter muscle
41
Deep temporal n.
branches off of mandibular nerve, sensory, postganglionic sympathetic [communication from the external carotid plexus]& motor (lmn) [trigeminal motor nucleus of the pons] innervation of the temporalis muscle
42
Nerve to the lateral pterygoid
branches off of mandibular nerve, sensory, postganglionic sympathetic [communicationfrom the external carotid plexus]& motor (lmn) [trigeminal motor nucleus of the pons] innervation of the lateral pterygoid muscle
43
Long buccal nerve
branches off of mandibular nerve, sensory & postganglionic sympathetic [communication from the external carotid plexus] innervation of the buccal skin and buccal mucosa and gingiva
44
auriculotemporal nerve
branches off of mandibular nerve, middle meningial artery passes with in it, sensory & postganglionic sympathetic [communication from the external carotid plexus] innervation of the TMJ, external auditory meatus and skin anterior to the ear, and sensory, postganglionic sympathetic & postganglionic parasympathetic [axons arise from the otic ganglion] innervation of the parotid gland
45
Lingual n. of CNV3
branches off of mandibular nerve, sensory & postganglionic sympathetic [communication from the external carotid plexus] innervation of the mucosa overlying the anterior 2/3rds of the tongue, the floor of the oral cavity and the adjacent gingiva, taste innervation to the anterior 2/3rds of the tongue [communication from the chorda tympani n,], and sensory, postganglionic sympathetic and preganglionic parasympathetic [communication from the chorda tympani n.] innervation of the lingual, sublingual and submandibular glands [by way of the submandibular ganglion, some of the postganglionic parasympathetic axons rejoin the lingual nerve branches prior to innervating sublingual gland and minor lingual glands]
46
Inferior alveolar n.
branches off of mandibular nerve, passes through mandibular foramen after giving off nerve to mylohyoid, also gives off mental and incisive nerves after passing through, sensory & postganglionic sympathetic [communication from external carotid plexus] innervation of the lower teeth and their adjacent buccal and labial gingiva
47
Mental n.
branches off of inerior alveolar, passes through mental foramen, sensory & postganglionic sympathetic [communication from external carotid plexus] innervation of the skin overlying the chin and lower lip, and labial mucosa and gingiva
48
N. to mylohyoid
branches off of inferior alveolar, sensory, postganglionic sympathetic [communication from external carotid plexus]& motor (lmn) [trigeminal motor nucleus of the pons] innervation of the mylohyoid and anterior digastric muscles
49
Abducens n.
CNVI, sensory [communication from the ophthalmic nerve in the superior orbital fissure], postganglionic sympathetic [communication from the internal carotid plexus in the cavernous sinus] & motor (lmn) [abducens nucleus of the pons] innervation of the lateral rectus muscle, passes through superior orbital fissure
50
Facial nerve
CNVII, emerges from medulla, passes through internal auditory meatus before passing through geniculate ganglion, includes branches in the facial canal, greater petrosal nerve, branches at the stylomastoid foramen, and branches to the face
51
branches in the facial canal off of facial nerve
includes nerve to the stapedius, and chorda tympani nerve
52
branches at the stylomastoid foramen off of facial nerve
includes nerve to the stylohyoid muscle and nerve to the posterior digastric muscle,
53
branches on the face from the facial nerve
includes temporal, zygomatic, buccal, marginal mandibular, and cervical branches
54
nerve to the stapedius
branches off of facial nerve, motor (lmn) innervation of the stapedius muscle
55
Chorda tympani n.
branches off of facial nerve, passes through petrotympanic fissure, sensory [taste] innervation of the mucosa of the anterior 2/3rds of the tongue [taste axons join the lingual nerve to innervate the mucosa of the tongue], and preganglionic parasympathetic [superior salivatory nucleus of the pons] innervation of the submandibular ganglion [the postganglionic parasympathetic axons travel with the lingual nerve and innervate the sublingual and submandibular glands]
56
Greater petrosal n.
branches off of facial nerve, passes through hiatus of greater petrossal n, pterygoid canal where it turns into nerve of the pterygoid canal, preganglionic parasympathetic [superior salivatory nucleus of the pons] innervation of the pterygopalatine ganglion [postganglionic parasympathetic axons arising from the pterygopalatine ganglion join branches of the maxillary nerve to reach the lacrimal gland and the mucosa of the nasal cavity & paranasal sinuses, the nasal pharynx and roof of the oral cavity] and sensory [taste] innervation of mucosa of palate
57
Nerve of the pterygoid canal
passes through pterygoid canal and pterygopalatine ganglion, postganglionic sympathetic and preganglionic parasympathetic innervation of the pterygopalatine ganglion [postganglionic parasympathetic axons arising from the pterygopalatine ganglion join branches of the maxillary nerve to reach the lacrimal gland and the mucosa of the nasal cavity & paranasal sinuses, the nasal pharynx and roof of the oral cavity] and taste (palate)
58
Nerve to the stylohyoid m.
branches off of facial nerve, motor (lmn) [facial motor nucleus of the pons] & postganglionic sympathetic [communication from external carotid plexus] innervation of the stylohyoid muscle
59
Nerve to the posterior digastric m.
branches off of facial nerve, motor (lmn) [facial motor nucleus of the pons] & postganglionic sympathetic [communication from external carotid plexus] innervation of the posterior belly of the digastric muscle
60
Temporal branch
branches off of facial nerve, motor (lmn) [facial motor nucleus of the pons] & postganglionic sympathetic [communication from external carotid plexus] innervation
61
Zygomatic branch (CNVII)
branches off of faical nerve, motor (lmn) [facial motor nucleus of the pons] & postganglionic sympathetic [communication from external carotid plexus] innervation
62
Buccal branch
branches off of facial nerve, motor (lmn) [facial motor nucleus of the pons] & postganglionic sympathetic [communication from external carotid plexus] innervation
63
Marginal mandibular branch
branches off of facial nerve, motor (lmn) [facial motor nucleus of the pons] & postganglionic sympathetic [communication from external carotid plexus] innervation
64
Cervical branch
branches off of facial nerve, motor (lmn) [facial motor nucleus of the pons] & postganglionic sympathetic [communication from external carotid plexus] innervation
65
Vestibulocochlear n.
CNVIII
66
Glossopharyngeal n.
CNIX, emerges from medulla, passes through jugular foramen, before passing through superior and inferior ganglion, includes tympanic nerve, carotoid branch, pharyngeal branch, tonsilar branch, lingual branch, and nerve to the stylopharyngeus muscle
67
Tympanic n.
branches off of glossopharyngeal nerve, passes through tympanic canaliculus and turns into lesser petrosal nerve past the middle ear, sensory and postganglionic sympathetic [communication from superior cervical ganglion] innervation of the middle ear, and preganglionic parasympathetic [inferior salivatory nucleus of the medulla] innervation
68
lesser petrosal nerve
branches off of tympanic nerve,passes through the hiatus for the lesser petrosal and the foramen ovale, preganglionic parasympathetic [inferior salivatory nucleus of the medulla] innervation of the otic ganglion [postganglionic axons arising from the otic ganglion travel with the auriculotemporal nerve to innervate the parotid gland]
69
Carotid branch (CNIX)
branches off of glossopharyngeal nerve, sensory innervation of the carotid sinus and body
70
Pharyngeal branches (CNIX)
branches off of glossopharyngeal nerve, sensory and postganglionic sympathetic [communication from the superior cervical ganglion] innervation of the mucosa of the upper pharynx, tested with gag reflex
71
Tonsilar branch
branches off of glossopharyngeal nerve, sensory and postganglionic sympathetic [communication from the superior cervical ganglion] innervation of the tonsilar mucosa
72
Lingual br (CNIX)
branches off of glossopharyngeal nerve, sensory [including taste] and postganglionic sympathetic [communication from the superior cervical ganglion] innervation of the mucosa of the posterior 1/3rd of the tongue
73
N. to the stylopharyngeus m.
branches off of glossopharyngeal nerve, sensory, postganglionic sympathetic [communication from the superior cervical ganglion] & motor (lmn) [nucleus ambiguus of the medulla] innervation of the stylopharyngeus muscle
74
Vagus nerve
CNX, emerges from medulla, passes through jugular foramen before passing through the superior and inferior ganglion, includes branches in the jugular fossa and branches in the neck and mediastinum
75
vagus nerve branches in the jugular fossa
includes auricular nerve
76
vagus nerve branches in the neck and mediastinum
includes pharyngeal plexus, carotoid nerve, superior laryngeal nerve, recurrent laryngeal,and vagal trunk
77
Auricular nerve
branches off of vagus nerve, sensory and postganglionic sympathetic [communication from the superior cervical ganglion] innervation of the skin of the external auditory meatus and ear
78
pharyngeal plexus (CNX)
branches off of vagus nerve, sensory, postganglionic sympathetic [communication from the superior cervical ganglion], motor (lmn) [nucleus ambiguus of the medulla] innervation of the all the muscles of the pharynx [except the stylopharyngeus] and the palate [except the tensor palatini]
79
Carotid n. (CNX)
branches off of vagus nerve, sensory and postganglionic sympathetic [communication from the superior cervical ganglion] innervation of the carotid sinus and body
80
Superior laryngeal branch
branches off of vagus nerve and gives off internal and external laryngeal nerves
81
Internal laryngeal n.
branches off of superior laryngeal nerve, sensory, taste [to epiglottis], postganglionic sympathetic [communication from the superior cervical ganglion] and preganglionic parasympathetic [dorsal motor nucleus of the medulla] innervation of the mucosa of the oral & laryngeal pharynx, epiglottis and larynx superior to the vocal folds
82
External laryngeal n.
branches off of superior laryngeal nerve, sensory, postganglionic sympathetic [communication from the superior cervical ganglion] & motor (lmn) [nucleus ambiguus of the medulla] innervation of the cricothyroid, and inferior constrictor muscles
83
Recurrent laryngeal n.
branches off of vagus nerve, sensory, postganglionic sympathetic [communication from the superior cervical ganglion] & motor (lmn) [nucleus ambiguus of the medulla] innervation of all the muscles of the larynx (with the exception of the cricothyroid muscle), and the inferior constrictor muscle; sensory, postganglionic sympathetic and preganglionic parasympathetic [dorsal motor nucleus of the medulla] innervation of the tracheal, laryngeopharyngeal, and laryngeal mucosa (inferior to the vocal folds)
84
Vagal trunks
branches off of vagus nerve, carries preganglionic parasympathetic axons innervating thoracic and abdominal viscera to the level of the left colic flexure, and sensory axons innervating the same viscera
85
Accessory n.
CNXI, includes the cranial root which joins the pharyngeal plexus of vagus nerve, and spinal root
86
Spinal root of acessory nerve
passes through foramen magnum and jugular foramen, postganglionic sympathetic [communication from the superior cervical ganglion] & motor (lmn) [spinal accessory nucleus of C1-5] innervation of the trapezius and sternocleidomastoid muscles
87
Hypoglossal n.
CNXII, emerges from medulla, passes through the hypoglassal canal, sensory [communication from the lingual nerve near the hyoglossus muscle], postganglionic sympathetic [communication from the superior cervical ganglion] & motor (lmn) innervation of the genioglossus, styloglossus, hyoglossus and intrinsic tongue muscles
88
Suboccipital nerve
emerges from dorsal rami of CI, includes muscular branches and sometimes cutaneous branches
89
muscular branches of suboccipital nerve
sensory, postganglionic sympathetic [gray ramus] and motor (lmn) innervation of semispinalis capitis, inferior oblique, superior oblique, rectus capitis posterior major and rectus capitis posterior minor muscles
90
greater occipital nerve
emerges from dorsal rami of C2, includes medial and lateral branches
91
Medial branch of greater occipital
sensory and postganglionic sympathetic [gray ramus] innervation of the skin overlying the back of the head
92
Lateral branch of greater occipital
sensory, postganglionic sympathetic [gray ramus] and motor (lmn) innervation of the splenius capitis, longissimus capitis & semispinalis capitis muscles
93
Medial branch (3rd occipital n.)
emerges from dorsal rami of C3, sensory and postganglionic sympathetic [gray ramus] innervation of the skin overlying the suboccipital triangle
94
Lateral branch of C3 dorsal rami
sensory, postganglionic sympathetic [gray ramus] and motor (lmn) innervation of the overlying neck muscles
95
Medial branches of dorsal rami of C4-8
sensory and postganglionic sympathetic [gray rami communicans] innervation of the skin overlying the cervical vertebrae
96
Lateral branches of dorsal rami C4-8
sensory, postganglionic sympathetic [gray ramus] and motor (lmn) innervation of the overlying neck muscles
97
Cervical plexus
ventral rami of cervical spinal nerves
98
Cutaneous branches of cervical plexus
includes lesser occipital, great auricular, transverse cervical, and supraclavicular nerves
99
Lesser occipital n.
emerges from ventral rami of C2, sensory & postganglionic sympathetic [gray ramus] innervation of the skin overlying the posterior-lateral aspect of the head and upper neck
100
Great auricular n.
emerges from ventral rami of C2-3, sensory & postganglionic sympathetic [gray rami communicans] innervation of the skin overlying the upper SCM, lower parotid region and ear
101
Transverse cervical n.
emerges from ventral rami of C2-3, sensory & postganglionic sympathetic [gray rami communicans] innervation of the skin overlying the lower SCM and anterior neck
102
Supraclavicular n.
emerges from ventral rami of C3-4, sensory & postganglionic sympathetic [gray rami communicans] innervation of the skin overlying the lower half of the posterior triangle of the neck
103
Sensory (non-cutaneous) branches of cervical plexus
includes proprioceptive branches to trapezius m. and proprioceptive branches to the SCM m.
104
Proprioceptive branches to trapezius m.
emerges from cervical plexus, sensory & postganglionic sympathetic [gray rami communicans] innervation of the trapezius muscle
105
Muscular branches of cervical plexus
includes Nerve to the geniohyoid m., Nerve to the thyrohyoid m., Superior root of the ansa cervicalis, Inferior root of the ansa cervicalis, Phrenic n., and Misc. muscular branches
106
Nerve to the geniohyoid m.
emerges from ventral rami C1, sensory, postganglionic sympathetic [gray ramus] and motor (lmn) innervation of the geniohyoid muscle
107
Nerve to the thyrohyoid m.
emerges from ventral rami C1, sensory, postganglionic sympathetic [gray ramus] and motor (lmn) innervation of the thyrohyoid muscle
108
Superior root of the ansa cervicalis
emerges from ventral rami C1, sensory, postganglionic sympathetic [gray ramus] and motor (lmn) innervation of the superior belly of the omohyoid muscle
109
Inferior root of the ansa cervicalis
emerges from ventral rami C2-3, sensory, postganglionic sympathetic [gray rami communicans] and motor (lmn) innervation of the sternohyoid, sternothyroid and inferior belly of the omohyoid muscles
110
Phrenic n.
emerges from ventral rami C3-5, sensory, postganglionic sympathetic [gray rami communicans] and motor (lmn) innervation of the diaphragm, sensory & postganglionic sympathetic innervation to pericardium & central tendon (& adjacent pleura & peritoneum)
111
Misc. muscular branches from cervica plexus
emerges from ventral rami cervical spinal nerves, sensory, postganglionic sympathetic [gray rami communicans] & motor (lmn) innervation of the longus capitis, longus coli, & anterior, middle & posterior scalene muscles

Unit III (7 decks)

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