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54 Cards in this Set
- Front
- Back
Where do benign tumors & malignant tumors develop in the parotid gland?
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Benign--> superficial lobe
Malignant --> Deep lobes |
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What are the 5 branches of the facial nerve?
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1. Temporal
2. Zygomatic 3. Buccal 4. Marginal mandibular 5. Cervical |
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What is the path that the parotid duct takes?
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Passes anterior to masseter --> goes through buccal fat pad --> Empties into parotid papilla = 2nd maxillary molar
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What is the most superficial plane --> deepest plane associated w/ the parotid gland?
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Most superficial = Nervous plane --> Venous plane --> Arterial plane =Deepest
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Where does your facial nerve come out of?
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Stylomastoid foramen of temporal bone
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What 2 veins drain into retromandibular vein?
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1. Superficial temporal vein
2. Maxillary vein |
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Retromandibular vein splits into which 2 branches?
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1. Posterior branch
2. Anterior branch |
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Which 2 veins drain inot external jugular vein?
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1. Posterior auricular vein
2. Posterior branch of retromandibular vein |
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Which 2 veins drain into internal jugular vein?
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1. Common facial vein
2. Anterior branch of retromandibular vein |
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Retromandibular vein is deep to what?
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Facial nerve
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What effect does sympathetic innervation have on parotid gland?
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Sympathetics cause vasoconstriction of blood flow --> get a more viscous secretion from parotid gland (less saliva)
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Preganglionics come from? Enter where? Synapse where? and hitch-hike w/ what?
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Preganglionics come from spinal cord & enter sympathetic chain --> synpase at cervical ganglion --> postganglionics hitch-hike w/ arteries
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Secretion of parotid gland is stimulated by what part of the nervous system?
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Parasympathetic
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What is the pathway of preganglionics to the parotid gland?
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Glossopharyngeal (IX) --> tympanic branch --> tympanic plexus --> lesser superficial petrosal nerve
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Where do the preganglionic parasympathetics to the parotid gland synapse?
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Lesser superficial petrosal nerve synapses at OTIC GANGLION
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What is the pathway of postganglionic parasympathetics to parotid gland?
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Otic ganglion --> hitch-hike w/ Auriculotemporal nerve (mandibular branch of V)
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All parasympathetics hitch-hike w/?
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Divisions of CN V (trigeminal)
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Where does glossopharyngeal nerve come from?
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Jugular foramen
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Tympanic branch enters where?
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middle ear
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Lesser superficial petrosal nerve exits where?
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Foramen ovale
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Sensation from parotid gland by which 2 nerves?
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1. Great auricular
2. Auriculotemporal (pain travels over these fibers) |
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If you give an injection too far back and hit the parotid gland what symptoms will patient experience?
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Temporary paralysis of facial muscles on that side
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What are the 3 divisions of the trigeminal nerve?
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1. Opthlamic nerve
2. Maxillary nerve 3. Mandibular nerve |
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Anything derived from 2nd arch is innervated by which nerve?
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Facial nerve
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What lies ANTERIOR to parotid gland? (3)
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1. Masseter
2. Ramus of mand 3. Medial pterygoid |
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What lies POSTERIOR to parotid gland? (3)
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1. Mastoid process
2. SCM 3. Posterior belly of the digastric |
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What lies MEDIAL to parotid gland? (9)
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1. Styloid process
2. Stylopharyngeus 3. Styloglossus 4. Stylohyoid 5. Superior pharyngeal constrictor 6. Palatine tonsil 8. Ascending pharyngeal & palatine arteries 9. Carotid sheath |
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WHat lies SUPERIOR to parotid gland? (3)
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1. External auditory meatus
2. Zygomatic arch 3. TMJ |
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Forehead region consists of? (3)
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1. Glabella
2. Supercilliary arches 3. Frontal eminances |
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Zygomatic area consists of? (4)
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1. Maxilla
2. Frontal 3. Temporal 4. Zygomaticofacial foramen |
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What makes up the ROOF of the orbit? (1)
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Frontal bone
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What makes up the LATERAL wall of the orbit? (2)
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1. Zygomatic bone
2. Greater wing of sphenoid |
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What makes up the FLOOR of the orbit? (1)
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Maxilla
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What makes up the MEDIAL wall of the orbit? (4)
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1. Maxilla
2. Lacrimal bone 3. Ethmoid bone 4. Lesser wing of sphenoid |
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What are the orbital openings? (8)
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1. Supraorbital notch/foramen
2. Infraorbital notch/foramen 3. Optic canal 4. Superior orbital fissure 5. Inferior orbital fissure 6. Post & ant. ethmoidal foramina 7. Zygomatic canal 8. Nasolacrimal duct |
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What bones make up the NASAL region? (5)
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1. Nasal bones
2. Perpendicular plate of ethmoid 3. Vomer 4. Anterior nasal spine 5. Nasal conchae- superior, middle & inferior |
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In the embryo, the FRONTAL PROMINENCE gives rise to?
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Frontal prominence = Opthalmic division of V (V-1)
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in the embryo, the MAXILLARY PROCESS gives rise to?
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Maxillary process = Maxillary division of V (V-2)
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In the embryo, the 1st PHARYNGEAL ARCH gives rise to?
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1st pharyngeal arch = Mandibular division of V (V-3)
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What are the branches of the opthalmic division of V? (5)
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1. Supraorbital nerve
2. Supratrochlear nerve 3. Lacrimal nerve 4. Infratrochlear nerve 5. External nasal branch of anterior ethmoidal nerve |
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What are the branches of the maxillary division of V? (3)
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1. Infraorbital nerve
2. Zygomaticofacial nerve 3. Zygmomaticotemporal nerve |
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What muscles do the temporal & posterior auricular branches of VII innervate?
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1. Auricular muscles- ant, sup, post
2. Occipitofrontalis |
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What are the orbital muscles? (3)
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1. Orbicularis oculi
2. Procerus 3. Corrugator supercilii |
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What is the innervation to the orbital muscles?
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Zygomatic & buccal branches of Facial nerve
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What are the nasal muscles? (3)
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1. Nasali muscle
-Compressor naris -Dilator naris 2. Depressor septi 3. Procerus |
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What is the innervation to the nasal muscles? (3)
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Zygomatic & Buccal branches of Facial
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The LOWER group of oral muscles consists of? (3)
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1. Depressor anguli oris
2. Depressor labii inferioris 3. Mentalis |
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The UPPER group of oral muscles consists of? (5)
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1. Risorius
2. Zygomaticus major & minor 3. Levator labii superioris 4. Levator labii superioris alaeque nasi 5. Levator angular oris |
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Obicularis oris is innervated by?
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Buccal branches of Facial
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These symptoms would indicate?
-Drooling I-nability to smile, whistle or blow -Drooping of upper eyelid & everted lower eyelid -Inability to blink or close eye |
Facial nerve palsy
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What are the branches of the facial artery? (5)
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1. Angular artery
2. Lateral nasal branch 3. Septal branch 4. Superior labial artery 5. Inferior labial artery |
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What are the anastomoses of the Facail artery? (5)
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1. Buccal branch of maxillary
2. Transverse facial (superficial temporal) 3. Infraorbital (maxillary) 4. Dorsal nasal branch of ophthalmic 5. branches of facial arteries across midline |
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What communications are near the Danger zone? (3)
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1. Superior & inferiior ophthalmic veins
2. Facial vein 3. cavernous sinus |
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What are the 5 layers of the scalp?
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1. Skin
2. CT 3. Aponeurosis 4. Loose CT 5. Pericranium |