facial muscles and the eye Flashcards
What two muscles share a common tendon of the epicranial aponeurosis?
frontalis and occipitalis
What muscle controls entry and exit through the mouth?
oribicularis oris
What muscle is active in smiling, keeping cheek from retracting while eating?
buccinator
What is the junction between the lower and upper lip called?
lateral commissures, responsible for dimples!
what is the thin sheet in the subcutaneous tissue of the neck?
platysma, that is responsible for a grimace!
What are the three parts of the orbicularis oculi?
palpebral part (blinking, sleeping), lacrimal part (aids tear flow), orbital part (tightly closes eyelid)
What is paralysis of CN VII?
bells palsy w/ drooling, mastication, poor speech, skin irritation
What are the three branches of the trigeminal nerve?
opthalmic, maxillary, mandibular
What are the three branches of the opthalmic nerve?
frontal, nasociliary (eye), lacrimal
What are the three branches of the mandibular nerve?
auriocotemporal, buccal, mental
What nerve supplies the small area of the scalp posterior to ear?
great auricular nerve
What nerve supplies the scalp posterior and superior to the ear?
lesser occipital nerve
What nerve supplies the posterior scalp?
greater occipital nerve
What nerve supplies the small area of the lower scalp?
third occipital nerve
What are the branches of the facial nerve?
temporal, zygomatic, buccal, marginal, cervical
What artery supplies the face?
external carotid artery –> facial artery, transverse facial artery, maxillary artery
What are the branches of the external carotid artery?
facial, inferior labial, superior labial, lateral nasal, angular, occipital, posterior auricular, superficial temporal, transverse facial, mental, supraorbital, supratrochlear
Where does lymph drain from the face?
parotid, deep cervical, submandibular, submental
What are the boundaries of the orbital cavity?
frontal bone, ethmoid/lacrimal bone, maxillary, zygomatic, back sphenoid
What does the abducens nerve innervate?
lateral rectus
What does the trochlear nerve innervate?
superior oblique
What does the oculomotor nerve innervate?
medial rectus, inferior, superior rectus, inferior oblique
