Parotid, Temporal And Infratemporal Regions

Front 1

what are the boundaries of the parotid region?

Back 1

posterior: mastoid process
anterior: ramus of mandible
posterpsuperior: floor of external auditory meatus
superior: zygomatic arch
medial: styloid process

Front 2

what are the boundaries of the temporal fossa?

Back 2

general location is above the zygomatic arch. The floor is portions of the frontal, sphenoid, parietal, and temporal bones. Anterior is the zygomatic process of the frontal bone and the frontal process of the zygoma. The superior and temporal boundaries is the superior temporal line.

Front 3

what are the boundaries of the infratemporal fossa?

Back 3

lateral wall is the ramus and coronoid process of the mandible. Anterior border is posterior surface of maxilla. The medial is the lateral pterygoid plate. The roof is the infratemporal surface of the greater wing of the sphenoid.

Front 4

what travels through the foramina ovale?

Back 4

the mandibular nerve, the lesser petrosal nerve (may go through its own foramen), accessory meningeal artery.

Front 5

what travels through the foramin spinosum?

Back 5

middle meningeal artery, meningeal branch of mandibular nerve.

Front 6

the retromandibular vein gives rise to what two tributaries?

Back 6

the superficial temporal vain and the maxillary vein

Front 7

the anterior branch of the retromandibular vein joins what other vein to form what new vein? Where does this vein drain?

Back 7

facial vain, common facial vein, and internal jugular

Front 8

the posterior branch of the retromandibular vein join with what other vein to form what new vein? Where does this vein drain?

Back 8

posterior auricular vein, external jugular, subclavian vein

Front 9

the facial veins are continusous with what? What is the significane of this continuity?

Back 9

pterygoid plexus of veins which is continuous with the dural venous sinuses. There are no valves here so backflow can occur. Bacterial backflow can cause meningitis

Front 10

what are the strongest muscles involved in closing the jaw?

Back 10

masseter, temporalis, and medial pterygoid

Front 11

what muscle are involved in opening the jaw?

Back 11

lateral pterygoid, mylohyoid, geniohyoid, digastric, and infrahyoid.

Front 12

which action is stronger, opening or closing the jaw?

Back 12

closing

Front 13

due to the parotid filling the area in the posterior ramus of the mandible, the mandible must move forward before it can completely open. What muscle assists with this?

Back 13

the upper part of the lateral pterygoid (note the lower head assists with the hinge movement)

Front 14

what fibrous structures attach the jaw to the skull?
(at tempromandibular joint)

Back 14

capsule, lateral temporomandibular ligament, stylomandibular lig, and sphenomandibular lig

Front 15

what movements occur between the head of the mandible and the articular disc? articular disease and mandibular fossa? (check this in moores)

Back 15

sliding, hinge

Front 16

what is the relation between the articular tubercle and a jaw dislocation?

Back 16

the head of the mandible becomes lodged anterior to the articular tubercle

Front 17

the internal carotid terminates as what arteries?

Back 17

the superficial temporal and the maxillary

Front 18

the mandibular part of the maxillary artery gives rise to what impportant arteries?

Back 18

middle meningeal and inferior alveolar (which gives rise to the mylohyoid and the mental artery)

Front 19

the pterygoid part of the maxillary artery gives rise to what important arteries?

Back 19

the deep temporal, masseteric, and pterygoid arteries are muscular arteries. It also gives rise to the buccal artery

Front 20

The pterygopalatine part of the maxillary artery gives rise to what important arteries>?

Back 20

the posterior superior alveolar, infraorbital, descending palatine, and sphenopalatine

Front 21

what is the only branch of the trigem that has both motor fibers? what are its branches? (note it also has sensory fibers as well)

Back 21

the mandibular nerve. Branches: buccal to the cheek, lingual to anterior 2/3 of tongue, inferior alveolar to teeth and chin, and auriculotemporal to the front of the ear and temporal region.

Front 22

what muscles do the motor component of the mandibular innervate?

Back 22

temporalis, masseter, lateral and medial pterygoids, mylohyoid, anterior belly of digastric, tensor veli palatini, and tensor tympani

Front 23

what nerve components are contained in the lingual nerve? What other fibers does it carry?

Back 23

GSA, but it also carries preganglionic parasympathetic fibers to the submandibular foramen and carries SVA from anterior 2/3 of tongue to the chorda tympani to the facial

Front 24

the auriculotemporal nerve carries what fibers from the otic ganglion to the parotid gland?

Back 24

postganglionic parasympathetics

Front 25

inferior alveolar nerve terminates as what nerve? Before it terminates, it gives off what nerve?

Back 25

mental nerve, nerve to mylohyoid

Front 26

the chorda tympani arises from what nerve carrying what fibers? What nerve does it join fibers with? What ganglion does it bring some of its fibers to?

Back 26

the facial nerve carrying taste and GVE preganglionic parasympathetics. the lingual nerve (branch of mandibular part of trigem). Brings GVE's to submandibular ganglion

Front 27

the facial nerve originates between the medulla and pons. It has 2 roots, what are they, what do they contain, and where do they fuse?

Back 27

motor root contains SVE's to facial muscles and platysma, buccinator and stapedius. The nervus intermedius has GVE and SVA. They fuse in the geniculate ganglia

Front 28

what are all five branches of the facial nerve (not just the SVE branches, but ALL of them)

Back 28

greater petrosal nerve
nerve to stapedius
chorda tympani
facial SVE branches
posterior auricular

Front 29

the greater petrosal nerve carries what fibers to where?

Back 29

GVE parasympathetics to the pterygopalatine ganglion and eventually to the lacrimal gland

Front 30

the posterior auricular nerve carries what to where?

Back 30

SVE's to the posterior digastric, stylohyoid, occipitalis, and auricular muscles

Front 31

which muscle of mastication depresses the mandible?

Back 31

the lateral pterygoid