Anatomy 1.25.15 Face and Scalp Flashcards
What are the muscles of facial expression (6)
Frontalis M Orbicularis Oculi Orbicularis oris Buccinator Platysma Occipitalis
What does Frontalis Muscle do?
Moves Scalp
What does Orbicularis Oculi do
Closes eyelids tightly
What does Orbiularis Oris do
Purses lips
Closes mouth
Compresses Lips
What does Occipitalis Muslce do
Moves scalp
What does Platysma do?
Tenses neck skin
What does Buccinator do>
COmpresses lips
Compresses Cheeks0 fat pad
What nerve innervates the muscles of facial expression
Facial Nerve!
What is the ajor salivary gland?
Parotid Gland
What muscle does parotid gland pierce thorugh?
Buccinator M
Where doe the upper and lower eyelids meet?
Medial and lateral Canthus
What is the Bulbar conjunctiva innervated by? Where is it loacated
ON whties of eye
Innervated by Opthalmic Nerve (V1) via lacriaml, ciliary nad infratrochlear branches
What is the Palpebral Conjunctiva innervatedby?
Lining eyelids It is connected to Bulbar conjuctiva
Upper lid innervated by Ophalmic Nerve
Lower lid innervated by Infraorbital Nerve
What causes “blood shot eyes”
Bulbar COnjunctiva vessels are engorged
highly vascular
Are there blood vessels int eh corneal epitheliuM?
NO! but lots o naked nerve endings
Desribe what you would see in saggital cut of eyelid
Bulbar conjunctiva on eyeball crosses coreanl epithelum where there is NO blood vessels, but lots of nerve endings
Concutiva then makes the Fornix (superioa dn inferior) that is a turnign point
Palpebral conjunctiva is then continous with Bulbar