H&N anatomy test
Terms
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Branches of 3d part of maxillary artery
Drive, Park Influenced - Arrested + Sentenced -
-Descending palatine artery (divides into greater and lesser palatine arteries)
-Posterior superior alveolar
-Infraorbital
-Artery of pterygoid canal
-Sphenopalatine artery - Maxillary nerve enters pterygopallatine fossa via_
- Foramen rotundum
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Branches of maxillary nerve
I (saw) 2 Zebras -
Infraorbital - terminal and largest branch of maxillary nerve, passes through infraorbital foramen
2 pterygopallatine nerves - form PPG
Zygomatic nerve - splits into zygomaticofacial and zygomaticotemporal, zygomaticotemporal give branch that supplies postganglionic parasympathetic fibers to lacrimal gland via lacrimal nerve - Describe nerve of pterygoid canal
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Consists of 2 nerves - deep petrosal and greater petrosal
Deep petrosal - postganglionic sympathetic fibers from internal carotid plexus, fibers come from superior cervical ganglion
Postganglionic sympathetic fibers go through ganglio w/out synapsing and distribute via branches of maxillary nerve
Greater petrosal - preganglionic parasympathetic fibers and taste fibers, preganglionic fibers synapse in PPG - All extraocular muscles including levator palpebrae are innervated by _ nerve, EXCEPT _
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Occulmotor nerve (CN III) EXCEPT
-Superior oblique - CN IV - trochlear nerve
-Lateral rectus - CN VI - abducens nerve - All muscles of palate are supplied by _ nerve EXCEPT _
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Vagus nerve CN X
EXCEPT
-Tensor veli palatini - CN V3 - All pharyngeal muscles are innervated by _ EXCEPT
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Vagus nerve
EXCEPT
-Stylopharyngeus - glossopharyngeal nerve (CN IX) - All intrinsic and extrinsic muscles of the tongue are supplied by _ EXCEPT
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Hypoglossal nerve (CN XII)
EXCEPT
-Palatoglossus - vagus nerve (CN X) - Muscles supplied by facial nerve - CN VII
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- All muscles of facial expression
-Occipitofrontalis
-Platysma
-Buccinator
-Stapedius
-Posterior belly of digastric
-Stylohyoid - Muscles supplied by mandibular nerve (V3)
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-4 muscles of mastication
-2 tensors (veli palatini and tympani)
-anterior belly of digastric
-Mylohyoid - All intrinsic muscles of larynx are supplied by _ EXCEPT
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Recurrent laryngeal nerve (branch of CN X)
EXCEPT
Cricothyroid - superior laryngeal nerve - All infrahyoid muscles are supplied by _ EXCEPT
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Ansa cervicalis (C1-C3)
EXCEPT
Thyrohyoid
Geniohyoid - those two muscles are supplied by C1 via hypoglossal nerve - SCM and trapezius are supplied by _
- CN XI - spinal accessory nerve
- Scalenes are supplied by _
- Direct branches of ventral rami of cervical spinal nerves
- Postganglionic sympathetic fibers from superior cervical ganglion supply _
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DILATOR PUPILLAE
Also orbitalis and smooth muscle part of levator palpebrae - Postganglionic parasympathetic fibers supply
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-Constrictor pupillae
-Ciliary muscles
-Also glands of nasal cavity, salivary and lacrimal glands - Nasal conchae
- Three shelf like projections of lateral nasal wall - superior, middle and inferior
- Nasal meatuses
- Spaces under conchae - superior, middle and inferior
- Sphenoetmoidal recess
- Space above superior nasal concha
- Ethmoidal bulla
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-Rounded elevation below and behind middle nasal concha
-Contains middle ethmoidal air cells - Hiatus semilunaris
- -Semicircular groove below ethmoidal bulla
- Nasal vestibule
- -Contains hairs that filter incoming air
- Nerve supply of nasal cavity
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-Anterior ethmoidal nerves - innervate anterior part of nasal cavity including septum and lateral walls, terminate as external nasal nerve
-Branches of PPG
-Olfactory nerves - innervate mucosa - Most of nasal septum is innervated by _
- Nasopalatine nerve
- Blood supply of nasal cavity
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-Anterior and posterior ethmoidal arteries
-Sphenopalatine artery
-Greater palatine artery - Innervation of frontal sinuses
- Supraorbital nerve
- Innervation of maxillary sinuses
- Supplied by superior alveolar and infraorbital nerves
- General sensation for anterior 2/3 of the tongue
- Lingual nerve (V3)
- Taste for anterior 2/3 of the tongue
- Chorda tympani (CN VII)
- General sensation and taste of posterior 1/3 of the tongue
- Lingual branch of CN IX
- General taste and sensation of valleculae
- Internal laryngeal nerve (CN X)
- Motor to all muscles of tongue except palatoglossus
- Hypoglossal CN XII
- Intrinsic muscles of the tongue
- Withing the tongue - no bony attachments, arranged as transverse, longitudinal and vertical sheets. Responsible for major shape change
- Genioglossus action
- Pulls tongue forward and protrudes
- Hyoglossus action
- Depresses tongue
- Styloglossus action
- Pulls tongue backward and upward
- Palatoglossus action
- Elevates tongue and approximates palatoglossal folds
- Blood supply of tongue
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Lingual artery and its 3 branches
-Dorsal lingual
-Deep lingual
-Sublingual