Practical lab 6

Orbital roof bones: ______

Frontal (orbital plate), lesser wing of sphenoid

Orbital roof adjacent space: ______

Anterior cranial fossa, frontal sinus

Orbital floor bones: ______

Maxilla (mainly), zygomatic, palatine

Orbital floor adjacent space: ______

Maxillary sinus

Medial orbital wall bones: ______

Ethmoid, lacrimal, maxilla, sphenoid

Medial orbital wall adjacent space: ______

Ethmoidal cells, nasal cavity

Lateral orbital wall bones: ______

Zygomatic, greater wing of sphenoid

Lateral orbital wall adjacent space: ______

Temporal fossa, middle cranial fossa

Thickest orbital wall: ______

Lateral wall

Superior rectus nerve: ______

CN III

Superior rectus anatomical action: ______

Straight up

Inferior rectus nerve: ______

CN III

Inferior rectus anatomical action: ______

Straight down

Medial rectus nerve: ______

CN III

Medial rectus anatomical action: ______

Straight medial

Lateral rectus nerve: ______

CN VI

Lateral rectus anatomical action: ______

Straight lateral

Superior oblique nerve: ______

CN IV

Superior oblique anatomical action: ______

In down

Inferior oblique nerve: ______

CN III

Inferior oblique anatomical action: ______

In up

Levator palpebrae superioris nerve: ______

CN III

Levator palpebrae superioris action: ______

Elevates upper eyelid

Oral vestibule: slit between ______ and the ______

Lips and cheeks and the teeth and gums

The parotid duct opens into the ______

Oral vestibule

Oral cavity proper: inside the ______

Dental arches

Oral cavity proper: roof = ______, floor = ______

Palate; tongue

Oral cavity proper ends at the ______

Palatoglossal arches

Hard palate: anterior ______ of the palate

Two-thirds

Hard palate bones: ______ + ______

Palatine processes of maxillae + horizontal plates of palatine bones

Hard palate separates ______ from ______

Mouth from nose

Soft palate and uvula: posterior ______, mobile

One-third

Soft palate rises in swallowing to close off the ______

Nasopharynx

Palatine tonsil lies between the ______ (anterior) and ______ (posterior) arches

Palatoglossal (anterior) and palatopharyngeal (posterior)

Anterior 2/3 tongue general sensation: ______

Lingual nerve (V3)

Anterior 2/3 tongue taste (except vallate papillae): ______

Chorda tympani (CN VII)

Posterior 1/3 tongue sensation and taste, and vallate papillae: ______

CN IX

Tongue motor supply: ______ (palatoglossus: ______)

CN XII (palatoglossus: CN X)

Submandibular duct opening: ______ beside the ______

Sublingual caruncle beside the lingual frenulum

Sublingual gland ducts: many small ducts along the ______ in the floor of the mouth

Sublingual folds

The ______ divides the tongue into anterior two-thirds and posterior third

Terminal sulcus

The vallate papillae sit just ______ the terminal sulcus

In front of

Concha = ______; meatus = ______

The bony shelf; the air passage beneath it

Sphenoidal sinus drains into: ______

Sphenoethmoidal recess

Ethmoidal cells drain into: ______

Superior meatus

Frontal sinus drains into: ______

Middle meatus

Maxillary sinus drains into: ______

Middle meatus

Nasolacrimal duct drains into: ______

Inferior meatus

Tympanic membrane separates the ______ from the ______

External acoustic meatus from the middle ear

Tympanic membrane: vibrates with sound; ______ attached

Handle of malleus

Malleus, incus, stapes function: ______

Amplify vibration

The stapes footplate sits in the ______

Oval window

Pharyngotympanic tube connects ______ to ______

Middle ear to nasopharynx

Pharyngotympanic tube function: ______

Equalizes pressure

Cochlea function: ______

Hearing (spiral organ)

Vestibule function: ______

Balance

Sound transmission (in order): ______

External acoustic meatus → tympanic membrane → malleus → incus → stapes → oval window → perilymph of the cochlea → hair cells of the spiral organ → cochlear nerve (CN VIII)

In sound transmission, the ______ releases the pressure

Round window

Oval window → ______ → hair cells of the spiral organ

Perilymph of the cochlea