head 3, 4

Question 1

temporal fossa boundaries

Answer 1

anterior: frontal process of zygomatic bone
posterior: superior temporal line
lateral: closed by temporalis fascia
inferior: superior margin of zygomatic arch

Question 2

temporal fossa contents

Answer 2

• temporalis
• superficial temporal artery, vein
• zygomatic and temporal branches of facial nerve

Question 3

infratemporal fossa: boundaries

Answer 3

anterior: maxilla
posterior: mastoid, styloid processes
medial: lateral pterygoid plate
lateral: ramus of mandible
superior: temporal bone, greater wing of sphenoid
inferior: angle of mandible

Question 4

arteries in the infratemporal fossa

Answer 4

• maxillary artery
• branches: infraorbital, accessory and middle meningeal, sphenopalatine, deep temporal, superficial temporal, buccal, posterior superior alveolar

Question 5

maxillary artery course

Answer 5

• branches at lateral pterygoid
• leaves infratemporal fossa, enters pterygopalatine fossa, terminates as infraorbital artery

Question 6

nerves in infratemporal fossa

Answer 6

• branches of mandibular nerve: buccal, lingual, deep temporal, auriculotemporal, inferior alveolar
• chorda tympani

Question 7

infratemporal fossa muscles

Answer 7

lateral and medial pterygoid

Question 8

pterygopalatine fossa boundaries

Answer 8

• between maxilla anteriorly, lateral plate of pterygoid process posteriorly

Question 9

pterygopalatine fossa arteries, nerves

Answer 9

infraorbital, sphenopalatine arteries
infraorbital nerve

Question 10

sphenopalatine artery: course

Answer 10

• termination of maxillary artery
• passes thru sphenopalatine foramen to supply conchae, meatuses, paranasal sinuses

Question 11

pterygopalatine ganglion

Answer 11

• preganglionic parasympathetic fibers from greater petrosal nerve
• postganglionic fibers distributed to lacrimal gland via maxillary, zygomatic, lacrimal nerve

Question 12

temporomandibular joint components

Answer 12

• fibrocartilaginous disc divides joint into upper and lower synovial cavities
• joint capsule, thickens to form temporomandibular ligament
• mandibular fossa, condyloid process

Question 13

mandible elevation, depression

Answer 13

• elevated: mouth shut
• depressed: mouth open

Question 14

temporalis muscle

Answer 14

• in temporal fossa
• elevates, retracts mandible
• innervated by mandibular nerve

Question 15

masseter

Answer 15

• elevates, grinds mandible
• innervated by mandibular nerve

Question 16

medial pterygoid

Answer 16

• works w/ masseter to move mandible up and laterally
• innervated by mandibular nerve

Question 17

lateral pterygoid

Answer 17

• protracts mandible, sliding head forward to end up inferior to articular process
• needed to open mandible
• innervated by mandibular nerve

Question 18

oral cavity: boundaries

Answer 18

• anterior, lateral: cheeks, lips
• superior: soft, hard palate
• inferior: floor of mouth
• posterior: continuous w/ oropharynx

Question 19

palatine tonsils surrounded by

Answer 19

palatoglossal and palatopharyngeal arches

Question 20

teeth innervation

Answer 20

• in alveolar process of mandible: inferior alveolar nerve
• in alveolar process of maxilla: superior alveolar nerve, infraorbital nerve

Question 21

tongue: divided by

Answer 21

• sulcus terminalis: horizontally divides into anterior 2/3, posterior 1/3
• median groove: divides posterior 1/3 in half vertically

Question 22

pharyngeal/posterior 1/3 of tongue: innervation

Answer 22

glossopharyngeal for both general and special sensory

Question 23

oral/anterior 2/3 of tongue: innervation

Answer 23

general sensory: lingual
special sensory: facial nerve via chorda tympani

Question 24

tongue muscles innervation

Answer 24

all innervated by hypoglossal, except palatoglossus

Question 25

submandibular gland

Answer 25

• empties via submandibular duct into the sublingual papilla

Question 26

sublingual gland

Answer 26

surrounds lingual frenulum, empties onto floor of mouth

Question 27

7 bones of orbit

Answer 27

frontal, maxillary, sphenoid, lacrimal, zygomatic, ethmoid, palatine

Question 28

frontal nerve

Answer 28

branches into supraorbital, supratrochlear to supply sensory to forehead, scalp

Question 29

lacrimal nerve

Answer 29

• branch of ophthalmic nerve
• enters orbit through superior orbital fissure
• sensory to conjunctiva, motor to lacrimal gland