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33 Cards in this Set
- Front
- Back
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when do facial structures develop?
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the 4th -8th week
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what are the five structures that arise around the stomodeum that eventually give rise to the facial structures?
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a nasofrontal prominence
2 maxillary prominences 2 mandibular prominences |
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what ruptures to become the stromodeum?
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the oropharyngeal membrane
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how is the maxillary prominences produced
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migration of neural crest cells from the neural fold
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what problems arise from inability of the maxillary prominences to join
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clefts
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what produces the mandibular prominences
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neural crest cells
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when do nasal placodes arise
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end of the 4th week
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what muscle produces a surprised look? (actually two muscles connected by a tendinous sheath
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the occipitofrontalis
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where does the facial nerve exit the skull
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stylomastoid foramen
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what are the 5 branches of the facial nerve
"Two Zombies By Motor Car" |
temporal
zygomatic buccal mandibular cervical |
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what nerve innervates the muscles of facial expression, the muscles of the face?
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the facial nerve (CN 7)
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why is the facial nerve zigzagged
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as you turn your face it gets stretched and would have a tendency to break apart
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why does the facial artery keep bleeding if cut?
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their is anastomosis from the other side of the face
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what does the superficial temporal supply?
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face and scalp
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what are the branches of the superficial temporal artery
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transverse facial
parietal frontal |
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how does the facial vein begin
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as an angular vein at the root of the nose
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why is the facial vein area of the face by the nose considered the "danger area"
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because if you get an infection from a sore there, there are no valves in the vein and backflow of blood can go up into the brain--carrying infection with it.
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in embryology, where is the frontonasal prominece
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surrounds the ventrolateral part of the forebrain
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what does the embryological structure--the frontonasal prominence become?
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two parts: frontal becomes the forehead and the nasal forms the upper part of the stomodeum and part of the mouth and nose
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what are the thickening structures in the inferiolateral part of the frontonasal prominence?
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nasal placodes
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from arch does the stapes, and styloid develop
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the second arch
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what are nerves that provide sensory to the face?
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the opthalmic, maxillary, and mandibular divisions of the trigeminal
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what is the nerves of the opthalmic division that provide sensory innervation to the forehead?
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supraorbital, supratrochlear, and infratrocholear
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what are the nerves of the maxillary division of trigeminal that provide sensory to the skin b/w the lower eyelid and upper lip
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intraorbital
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what are the branches of the maxillary nerve off trigeminal
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mental, long buccal, and auriculomotor nerves
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what provides sensory over the chin
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the mental nerve
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what provides sensory to the skin and mucus membranes of the cheek
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long buccal
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differentiate b/w the auriculotemporal nerve and great auricular nerve
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both are sensory but the AT is off the CN 5 and does the skin anterior to the ear. the GA is off the cervical plexus and does the area inferior to the ear & over parotid gland
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what are the different parts of the orbicularis oculi
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the orbital and palpebral parts
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what muscle is responsible for "crows feet"?
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the orbicularis oculi
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what muscle helps you whistle
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buccinator
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what muscle forms the prominence of the upper and lower lips
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orbicularis oris
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what muscle pulls the corners of the mouth
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zygomatic maj and minor
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