Face 2 Flashcards
what are the 5 layers on the head?
Skin
Connective tissue
Aponeurotic layer
Loose CT
Pericranium
(SCALP)
what are the major nerves on the scalp?
CN V1, V2, V3, Lesser occipital and Greater occipital
what branches off CN V1?
Supratrochlear n.
Supraorbital n.
what branches off CN V2?
zygomaticotemporal n
what branches off CN V3?
Auriculotemporal n
what is special about the auriculotemporal n. area?
Only area in face where there is overlapping motor/sensory
-sensory from cervical plexus
where does the greater occipital nerve come from?
DPR off C2
.what are the 2 major arteries for blood supply in the scalp? what branches off of them?
REMEMBER: posE sIs
- external carotid a.
- Superficial temporal a.
- Posterior auricular a.
- Occipital a.
- Internal carotid a.
- Supratrochlear a.
- Supraorbital a.
________ drain into internal and external jugular v
Companion veins
how can you differentiate a nerve vs artery?
- Sensory nerves run anterior/posterior, not too many right angles
- Arteries look like lattice work, usually branches come off at right angles
_______ vein will be behind parotid gland
Retromandibular
_______ fossa houses the temporalis muscle and is bounded by inferior/superior temporal lines, zygomatic bone
Temporal
________ fossa is deep toward sphenoid bone, behind coronoid process
infratemporal
The parotid gland is in the _________ region
retromandibular
Masseter m. and parotid gland invested by _________ fascia
parotidomasseteric
_________ is the largest salivary gland. where is it located?
Parotid gland,
Sits atop and around masseter and mandible, wraps around mandibular ramus
what nerve branches through the parotid gland?
Facial
Parotid gland gets sympathetic innervation from _____________ and parasympathetic from _______
-Sympathetic from external carotid plexus
-Parasympathetic from CN IX
The ___________ goes into EAM, does some stuff in petrous portion of temporal bone, then exits through stylomastoid foramen to innervate all muscles of facial expression
facial nerve
the _______ is a branch of the facial nerve that provides Taste to anterior ⅔ tongue
Chorda tympani
what are the important branches of the external carotid artery?
Superficial temporal a.
Posterior auricular a.
Maxillary a.
the retromandibular vein is formed by the union of __________ and __________
superficial temporal v. and maxillary v.
what is the Origin, Insertion, Innervation, and action of the superficial portion of the Masseter m?
O: anterior ⅔ inferior zygomatic arch
Insertion: lateral ramus to mandibular angle
Inn: trigeminal
Action: elevates mandible, transverse movements unilaterally
what is the Origin, Insertion, Innervation, and action of the deep portion of the Masseter m?
Origin: deep medial zygomatic arch
Insertion: superior ½ lateral ramus
Inn: trigeminal
Action: elevates mandible, transverse movements unilaterally
what is the Origin, Insertion, Innervation, and action of the Temporalis m?
Origin: Temporal fossa and temporalis fascia
Insertion: Anterior and medial border of coronoid process
Inn: trigeminal
Action: Elevates mandible, retraction from posterior fibers
