Head & Neck Flashcards
Facial muscles: Innervated by Facial Nerves (4)
- Orbicularis oris : kissing
- Zygomaticus: smiling
- Risorius: Grinning / Grimace
- Buccinator - Blowing / Sucking aka Trumpeter’s Muscle
Muscles of mastication: Innervated by Mandibular division of Trigeminal Nerve. (4)
- Temporalis : closes jaw
- Masseter : closes jaw
- Medial Pterygoid : closes jaw
- Lateral Pterygoid : opens jaw
Afferent limb of corneal reflex.
Nasociliary nerve of the ophthalmic division of Trigeminal nerve.
Other names of middle ear windows?
- Oval window - Fenestra vestibuli
- Round window - Fenestra cochlea
Nerve supply of the lacrimal gland.
- CN VII : Facial nerve - Submandibular, Sublingual
- CN IX: Parotid gland
Structures passing through the optic canal. (3)
- Optic nerve
- Ophthalmic artery
- Central artery & vein of the retina
Nerves that sends touch, temperature and pain information from the brain to the muscles.
- Dorsal & Efferent
Bell Magendie Law : Ventral = Motor , Dorsal = Sensory
Efferent limb of corneal reflex.
Facial Nerve
Facial vein begins as angular vein which is formed by the union of what two veins?
- Supratrochlear vein
- Supraorbital vein
Papillae that are arranged in the form of V in front of the sulcus terminalis?
Vallate Papillae
Muscles of the tongue innervated by the vagus nerve?
- Palatoglossus
-The rest of the muscles of the tongue are innervated by hypoglossal nerve.
Action of palatoglossus muscle?
Pulls the back of the tongue upward and narrows pharyngeal isthmus.
Responsible for the special sensation in the Anterior 2/3 of the tongue
Chorda Tympani / CN 7 / Facial Nerve
Injury of this nerve causes medial deviation or Esotropia and paralysis of abduction of the ipsilateral eye.
Abducent Nerve Injury
Cranial nerve palsy causing medial strabismus?
Abducens nerve
Anterior transparent part of the eyeball?
Cornea
Eye muscle paralyzed causing medial strabismus ?
Lateral rectus
Eye muscle that will pull the eyeball opposite the paralyzed muscle.
Medial rectus
Origin of the four recti muscles of the eye?
Common tendinous ring= Annulus of Zinn
Double vision that occurs only in one eye or only when one eye is open?
Monocular diplopia
Site of lesion if there is superior left homonymous quadrantanopia?
Right temporal lobe ( Meyers Loop)
Structures opening in the middle meatus? (4)
- Anterior ethmoid sinus
- Middle ethmoid sinus
- Maxillary Sinus
- Frontal sinus
Sinuses that are present at birth? (2)
- Maxillary Sinus
- Ethmoid Sinus
The arteries that compose the kiesselbach plexus? (4)
- Sphenopalatine (Maxillary)
- Anterior ethmoidal ( ophthalmic)
- Greater Palatine ( Maxillary)
- Superior Labial ( Facial)
Cone of light is seen in what quadrant?
Anteroinferior quadrant