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Unit III > nerves > Flashcards

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
Q

Lateral posterior superior nasal n.

A

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

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26
Q

Medial (septal) posterior superior nasal n.

A

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

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27
Q

nasopalatine nerve

A

branches off of medial posterior superior nasal nerve, passes through incisive fossa

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28
Q

Greater palatine n.

A

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

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29
Q

Lesser palatine n.

A

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

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30
Q

Zygomatic n. (CNV)

A

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

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31
Q

Posterior superior alveolar n.

A

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

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32
Q

Infraorbital n.

A

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

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33
Q

Middle superior alveolar n.

A

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

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34
Q

Anterior superior alveolar n.

A

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

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35
Q

Mandibular n.

A

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

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36
Q

Meningeal branch

A

branches off of mandibular nerve, passes through foramen spinosum, sensory & postganglionic sympathetic [communication from the external carotid plexus] innervation of the cranial dura mater

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37
Q

muscular branches of mandibular nerve

A

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

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38
Q

sensory branches of mandibular nerve

A

includes long buccal, auriculotemporal, lingual, and inferior alveolar nerves, and mental and incisive nerves that branch off of inferior alveolar nerve

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39
Q

Nerve to the medial pterygoid

A

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

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40
Q

Masseteric n.

A

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

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41
Q

Deep temporal n.

A

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

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42
Q

Nerve to the lateral pterygoid

A

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

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43
Q

Long buccal nerve

A

branches off of mandibular nerve, sensory & postganglionic sympathetic [communication from the external carotid plexus] innervation of the buccal skin and buccal mucosa and gingiva

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44
Q

auriculotemporal nerve

A

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

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45
Q

Lingual n. of CNV3

A

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
Q

Inferior alveolar n.

A

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
Q

Mental n.

A

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
Q

N. to mylohyoid

A

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
Q

Abducens n.

A

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
Q

Facial nerve

A

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
Q

branches in the facial canal off of facial nerve

A

includes nerve to the stapedius, and chorda tympani nerve

52
Q

branches at the stylomastoid foramen off of facial nerve

A

includes nerve to the stylohyoid muscle and nerve to the posterior digastric muscle,

53
Q

branches on the face from the facial nerve

A

includes temporal, zygomatic, buccal, marginal mandibular, and cervical branches

54
Q

nerve to the stapedius

A

branches off of facial nerve, motor (lmn) innervation of the stapedius muscle

55
Q

Chorda tympani n.

A

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
Q

Greater petrosal n.

A

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
Q

Nerve of the pterygoid canal

A

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
Q

Nerve to the stylohyoid m.

A

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
Q

Nerve to the posterior digastric m.

A

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
Q

Temporal branch

A

branches off of facial nerve, motor (lmn) [facial motor nucleus of the pons] & postganglionic sympathetic [communication from external carotid plexus] innervation

61
Q

Zygomatic branch (CNVII)

A

branches off of faical nerve, motor (lmn) [facial motor nucleus of the pons] & postganglionic sympathetic [communication from external carotid plexus] innervation

62
Q

Buccal branch

A

branches off of facial nerve, motor (lmn) [facial motor nucleus of the pons] & postganglionic sympathetic [communication from external carotid plexus] innervation

63
Q

Marginal mandibular branch

A

branches off of facial nerve, motor (lmn) [facial motor nucleus of the pons] & postganglionic sympathetic [communication from external carotid plexus] innervation

64
Q

Cervical branch

A

branches off of facial nerve, motor (lmn) [facial motor nucleus of the pons] & postganglionic sympathetic [communication from external carotid plexus] innervation

65
Q

Vestibulocochlear n.

A

CNVIII

66
Q

Glossopharyngeal n.

A

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
Q

Tympanic n.

A

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
Q

lesser petrosal nerve

A

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
Q

Carotid branch (CNIX)

A

branches off of glossopharyngeal nerve, sensory innervation of the carotid sinus and body

70
Q

Pharyngeal branches (CNIX)

A

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
Q

Tonsilar branch

A

branches off of glossopharyngeal nerve, sensory and postganglionic sympathetic [communication from the superior cervical ganglion] innervation of the tonsilar mucosa

72
Q

Lingual br (CNIX)

A

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
Q

N. to the stylopharyngeus m.

A

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
Q

Vagus nerve

A

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
Q

vagus nerve branches in the jugular fossa

A

includes auricular nerve

76
Q

vagus nerve branches in the neck and mediastinum

A

includes pharyngeal plexus, carotoid nerve, superior laryngeal nerve, recurrent laryngeal,and vagal trunk

77
Q

Auricular nerve

A

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
Q

pharyngeal plexus (CNX)

A

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
Q

Carotid n. (CNX)

A

branches off of vagus nerve, sensory and postganglionic sympathetic [communication from the superior cervical ganglion] innervation of the carotid sinus and body

80
Q

Superior laryngeal branch

A

branches off of vagus nerve and gives off internal and external laryngeal nerves

81
Q

Internal laryngeal n.

A

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
Q

External laryngeal n.

A

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
Q

Recurrent laryngeal n.

A

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
Q

Vagal trunks

A

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
Q

Accessory n.

A

CNXI, includes the cranial root which joins the pharyngeal plexus of vagus nerve, and spinal root

86
Q

Spinal root of acessory nerve

A

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
Q

Hypoglossal n.

A

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
Q

Suboccipital nerve

A

emerges from dorsal rami of CI, includes muscular branches and sometimes cutaneous branches

89
Q

muscular branches of suboccipital nerve

A

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
Q

greater occipital nerve

A

emerges from dorsal rami of C2, includes medial and lateral branches

91
Q

Medial branch of greater occipital

A

sensory and postganglionic sympathetic [gray ramus] innervation of the skin overlying the back of the head

92
Q

Lateral branch of greater occipital

A

sensory, postganglionic sympathetic [gray ramus] and motor (lmn) innervation of the splenius capitis, longissimus capitis & semispinalis capitis muscles

93
Q

Medial branch (3rd occipital n.)

A

emerges from dorsal rami of C3, sensory and postganglionic sympathetic [gray ramus] innervation of the skin overlying the suboccipital triangle

94
Q

Lateral branch of C3 dorsal rami

A

sensory, postganglionic sympathetic [gray ramus] and motor (lmn) innervation of the overlying neck muscles

95
Q

Medial branches of dorsal rami of C4-8

A

sensory and postganglionic sympathetic [gray rami communicans] innervation of the skin overlying the cervical vertebrae

96
Q

Lateral branches of dorsal rami C4-8

A

sensory, postganglionic sympathetic [gray ramus] and motor (lmn) innervation of the overlying neck muscles

97
Q

Cervical plexus

A

ventral rami of cervical spinal nerves

98
Q

Cutaneous branches of cervical plexus

A

includes lesser occipital, great auricular, transverse cervical, and supraclavicular nerves

99
Q

Lesser occipital n.

A

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
Q

Great auricular n.

A

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
Q

Transverse cervical n.

A

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
Q

Supraclavicular n.

A

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
Q

Sensory (non-cutaneous) branches of cervical plexus

A

includes proprioceptive branches to trapezius m. and proprioceptive branches to the SCM m.

104
Q

Proprioceptive branches to trapezius m.

A

emerges from cervical plexus, sensory & postganglionic sympathetic [gray rami communicans] innervation of the trapezius muscle

105
Q

Muscular branches of cervical plexus

A

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
Q

Nerve to the geniohyoid m.

A

emerges from ventral rami C1, sensory, postganglionic sympathetic [gray ramus] and motor (lmn) innervation of the geniohyoid muscle

107
Q

Nerve to the thyrohyoid m.

A

emerges from ventral rami C1, sensory, postganglionic sympathetic [gray ramus] and motor (lmn) innervation of the thyrohyoid muscle

108
Q

Superior root of the ansa cervicalis

A

emerges from ventral rami C1, sensory, postganglionic sympathetic [gray ramus] and motor (lmn) innervation of the superior belly of the omohyoid muscle

109
Q

Inferior root of the ansa cervicalis

A

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
Q

Phrenic n.

A

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
Q

Misc. muscular branches from cervica plexus

A

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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