Glossary of Anatomy Exam 4 2

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Single Facial Bones (2)
Paired Facial Bones (6)
Maxilla, Zygomatic, Nasal, Lacrimal, Palatine,
Inferior Nasal conchae
Ratio of facial to skull bones when born ____; when older _____
1:8, 1:2
Function of Muscles of facial expression
Move skin of face because muscles originate from bone and insert into skin
Muscles act as (2)
Facail Sulci
Wrinkles of face due to repeated folding of skin, perpendicular to long axis of contracting muscle
Muscles of Orbits
(2 sphincter)
Orbicularis oculi
Curracator Supercilli
Orbicularis Oculi is innervated by ____ & ______
Temporal & Zygomatic branch of facial nerve
Orbital portion of orbicularis oculi is located ________ & it functions to ______
Located adjacent to the rim of orbit; fxn: pull skin of forehead, cheek, & nostrils
Palpebral potion of orbicularis oculi is located _________ & it functions to ___________
Located in eyelids; fnx: complete closing or squinting of eyes
Muscles of nostrils (3)
Depressor Nasalis
Dialator Nasalis
Depressor Nasalis is a ____ muscle, its fxn is _____, and it is innervated by the _______
Fxn: compress lateral nasal cartilage
Buccal Nerve
Dialator Nasalis is a ______ muscle, its fxn is ________, and it is innervated by the ____________
Dialator muscle
Fxn: pulls on alar cartilage - makes nasal aperture larger
Buccal nerve
Procerus is located ______, its fxn is ______, and it is innervated by the _________
Between eyebrows
Fxn: wrinkles skin of nose
Temporal nerve
Sphincter muscle of the Oral Oriface is
Orbicularis Oris
Orbicularis Oris is located _____ its fxn is to ______, and it is innervated by ____ & _______
Surrounds lips
Fxn: causes lips to compress
Buccal & Mandibular Nerves
Dialator Muscles of the Oral Oriface are ____. (9)
superioris alaque nase, levator labii superioris, zygomaticus minor, zygomaticus major, levator anguli, risorius, depressor anguli oris, depressor labii inferioris, mentalis
Cheek muscle is called
The buccinator muscle allows you to _____ its fxn is to _____.
Compress cheeks against teeth
Fxn: whistle, hold food
The buccinator originates in _____, and Inserts into ______, it is innervated by ______
O:alveolar margins of maxilla
I:orbicularis oculi muscle
Buccal nerve
Motor Innervation of Facial Region________
Cranial nerve VII -
Facial Nerve
General Sensory Innervation of Facial Region ____
Cranial Nerve V -
Trigeminal Nerve
(innervates all facial regions except small area over small angle of mandible and parotid gland)
General Sensations include ___ (6)
Temperature, Pressure, Fine Touch, Pain, Vibrating, Proprioception (body position)
Branches of Trigeminal Nerve are ___ (3)
V1 - Ophthalmic nerve
V2 - Maxillary nerve
V3 - Mandibular nerve
V1 (Ophthalmic nerve) exits through _______
Supraorbital fissure
V2 (Maxillary nerve) exits through _____ then ____
Foramen rotundum
then inferior orbital fissure
V3 (Mandibular nerve) eits through ____
Foramen Ovale
This nerve has both motor & sensory functions
V3 - Mandibular nerve
Facial Nerve is CN __, it exits scull through _____, enters face _____, its nucleus is locate in _____
Stylomastoid foramen
Posterior to parotid gland
Major branches of the Facial nerve are ____ (5)
Temporal, Zygomatic, Buccal, Mandibular, Cervical

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