Frontal Region and Face

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how many bones make up the skull?: 21
Unpaired Skull Bones: Frontal*
Ethmoid*
Sphenoid*
Occipital*
Vomer
Inferior Nasal Concha
Paired Skull Bones: Parietal*
Temporal*
Palatine
Nasal
Lacrimal
Maxilla
Zygomatic
optic foramen: Located between the lesser wing and the body of the sphenoid. It transmits the optic nerve and the ophthalmic artery
superior orbital fissure: Located between the greater and lesser wings of the sphenoid. It transmits cranial nerves III, IV, ophthalmic division of V, VI, and the ophthalmic vein and the lacrimal artery
inferior orbital fissure: Located between the greater wing of the sphenoid and the maxilla. It transmits the infraorbital nerve and artery, and the zygomatic nerve
supraorbital foramen: Located in the frontal bone, it transmits the supraorbital nerve (terminal branch of ophthalmic division of V) and artery
Infraorbital canal: Located in maxilla; transmits the infraorbital nerve (terminal branch of maxillary division of V) and artery
Anterior ethmoid foramen: Located in the frontoethmoidal suture; transmits the anterior ethmoid artery and the nasociliary nerve
Posterior ethmoid foramen: Also located in the frontoethmoid suture; transmits the posterior ethmoid artery
Zygomatic foramen: Located in the zygomatic bone; transmits the zygomatic nerve
Canal for the nasolacrimal duct: Located in the maxilla; transmits the nasolacrimal duct to the inferior meatus of the nose
what three parts is the mandible made of?: body, angle, ramus
which bone does the condylar process of the mandible articulate with?: temporal
which part of the mandible houses the teeth?: the alveolar (upper) part
mental foramen: of mandible; the inferior alveolar nerve of the mandibular division of CN V, and the inferior alveolar artery become cutaneous here
mandibular foramen: into which the inferior alveolar nerve and artery enter to supply the jaw
Between the two parietal bones is found the . . .: mid-sagittal suture
The suture between the frontal bone and the two parietal bones is the . . .: coronal suture
the junction of the mid-sagittal and coronal sutures is the point . . .: bregma
The suture between the occipital bone and the two parietal bones is known as the . . .: lambdoidal suture
the junction of the mid-sagittal and lambdoid sutures is known as the point . . . .: lambda
what is the highest point of the skull called and where is it located?: The vertex is the highest point of the skull; it is located on the sagittal suture
squamous portion of the temporal bone: large part of temporal bone located immediately below the parietal bone
zygomatic process: (of temporal bone), narrow process that arches anteriorly and articulates with the zygomatic bone
temporal line: serves for the attachment of the epicranial aponeurosis, the temporal fascia and the temporalis muscle
boundaries of the infratemporal fossa: anterior - the infratemporal surface of the maxilla and ridge from its zygomatic process

posterior - the styloid process and the external auditory meatus (tegmen)

medial - the greater wing of the sphenoid, lateral pterygoid plate and maxilla

lateral - the zygomatic arch and the ramus of the mandible
superior or roof - greater wing of the sphenoid and part of the squamous portion of the temporal bone
which nerve (and its branches) supplies the facial muscles?: cranial nerve VII
what are the three parts of the orbicularis oculi muscle and what do these parts do?: lacrimal -- small and confined to the medial aspects of the lids, squeezes tears into the nasolacrimal duct

palpebral portion -- confined to the lids proper and blinks the eye

orbital portion -- closes the eyes tightly, as in squinting
Bell's Palsy: paralysis of facial nerve, patient is unable to close the eye and this can lead to corneal drying
orbicularis oris: surrounds the mouth, closes the mouth and puckers the lips in kissing
buccinator: large "internal" M inside the cheek, compresses the cheeks for trumpet, helps keep food in oral cavity and out of the oral vestibule
zygomaticus major: well developed, prominent M extending from the corner of the mouth to the zygoma bone, effects a broad smile
through which foramen does the motor branch of the facial nerve exit?: stylomastoid foramen
what does the zygomatic branch of the facial N innervate?: orbicularis oculi
what does the buccal branch of the facial N innervate?: serves most of the muscles on the side of the face, including part of the orbicularis oris
what does the cervical branch of the facial nerve innervate?: platysma M
what are the three major divisions of the fifth cranial N?: ophthalmic, maxillary, and mandibular
supraorbital N - from which division of cranial N V? - location / fxn: ophthalmic division

exits a notch or foramen in the superior orbital rim, and extends superiorly on the forehead to the scalp all the way to the vertex of the skull
infraorbital N - from which division of cranial N V? - location / fxn: maxillary division

largest sensory nerve of the face, and gives sensation to the middle of the face below the orbit, and extends to the nose
what are the major skin branches of the mandibular division of cranial N V?: auriculotemporal N -- in front of ear and extending up toward the lateral temporal region

mental nerve -- of the chin and upper lip
facial artery - branch of which A?: branch of the external carotid A in the neck, may arise from a common stem with the lingual A to the tongue
nasion: the jxn b/t the frontal and nasal bones
pterion: jxn of frontal, parietal, sphenoid, and temporal bones
the condylar process of the mandible articulates with the . . .: temporal bone
which portion of the orbicularis oculi muscle is in the eyelid and is responsible for blinking?: palpebral
is the orbital N a branch of the facial nerve?: no

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Deck Info

Number of cards 47