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33 Cards in this Set

  • Front
  • Back
What nerve supplies the mm of facial expression?
facial nerve (AKA cranial nerve/CN VII)
Facial nerve exits skull via
stylomastoid foramen
Facial nerve gives rise to five terminal branches...
Temporal,
Zygomatic,
Buccal,
Mandibular,
Cervical
Innervation of digastric posterior belly & stylohyoid mm?
Facial nerve
posterior auricular nerve is a branch of...
facial nerve; it goes to mm of the auricle and occipitalis m
Corneal blink reflex
=closure of the eyelids;
AFFERENT limb of reflex is opthalmic div (I) of trigeminal (CNV) [sensory to eye]; EFFERENT limb of reflex is facial n (CN VII)
Bell's palsy
paralysis of the fascial mm on the affected side bc of lesion of facial nerve;
marked by distortions of the face, decreased lacrimation, loss of taste in ant 2/3 of tongue, painful sensitivity to sounds, deviation of lower jaw & tongue
Trigeminal Nerve (CN V)
provides sensory innernation to skin of face
Branches of Trigeminal
I: Opthalmic
II: Maxillary
III: Mandibular
Opthalmic division of V (area of innervation + branches...)
innervates area above upper eyelid & dorsum of nose;
branches are: supraorbital, supratrochlear, infratrochlear, external nasal, lacrimal
Maxillary division of V (area + branches)
innervates face below the level of the eyes and above the upper lip;
branches are Zygomaticofacial, Zygomaticotemporal, Infraorbital
Mandibular division of V (area + branches)
innervates face below the level of the lower lip;
branches include auriculotemporal, buccal, mental
Trigeminal neuralgia (tic douloureux)
paroxysmal pain along course of trigeminal nerve, especially radiating to maxillary or mandibular area
Facial artery (pathway)
arises from External Carotid Artery above hyoid bone;
passes deep to mandible, winds around lower border of mandible, runs upward and forward on the face
Facial artery (branches in neck)
ascending palatine, tonsillar, glandular, submental
Facial artery (branches in face)
inferior labial, superior labial, lateral nasal
Anastomoses of facial artery w/ opthalmic artery
(connects what two main arteries?)
facial terminates as angular artery that anastomoses w/ palpebral and dorsal nasal branches of opthalmic artery (establishes connection btw internal & external carotid)
Superficial temporal artery (pathway)
arises behind neck of mandible as smaller terminal branch of external carotid artery & ascends anterior to external acoustic meatus into scalp
Superficial temporal artery accompanied what nerve?
auriculotemporal
Transverse facial artery is a branch of which artery?
Superficial temporal artery
Branches of Superficial Temporal Artery...
transverse facial artery, zygomatico-orbital, middle temporal, anterior auricular, frontal, parietal
Facial vein receives...
supraorbital, supratrochlear (join to form angular), deep facial vein, infraorbital
Facial vein drains into...
IJV or joins anterior branch of retromandibular vein to form COMMON FACIAL VEIN
Danger Area of Face
area of face near the nose drained by facial veins; dangerous because skin infections on face can travel to cavernous venous sinus via facial vein; can cause SEPTICEMIA
Retromandibular vein
formed by union of superficial temporal vein and maxillary vein;
divides into anterior branch (joins facial to form common facial) & posterior branch (joins posterior auricular to form EJV)
Layers of SCALP
Skin,
Connective tissue (Close Subcutaneous tissue),
Aponeurosis epicranialis (galea aponeurotica),
Loose connective tissue,
Pericranium
Connective tissue (Close Subcutaneous tissue)
composed of dense connective tissue that binds the skin to the underlying aponeurosis of occipitofrontalis m
Aponeurosis epicranialis (galea aponeurotica)
a Fibrous Sheet that covers the vault of the skill and unites the occipitalis and frontalis mm
Loose connective tissue
forms subaponeurotic space, contains the EMISSARY VEINS;
termed dangerous area bc infection can spread easily in it or from scalp to intracranial sinuses by way of emissary veins
Pericranium
periosteum over surface of skull
Scalp hemorrhage
results from laceration of arteries in the dense subcutaneous tissue that are unable to contact or retract and thus remain open, leading to profuse bleeding
Innervation of scalp
supratrochlear, supraorbital, zygomaticotemporal, auriculotemporal, lesser occipital, greater occipital, third occipital nerves
Blood Supply to Scalp
supratrochlear, supraorbital (pf internal carotid);
superficial temporal, posterior auricular, occipital (of external carotid)