Deep Face I

Question 1

temporal fossa

Answer 1

space found superior to the zygomatic arch

Question 2

infratemporal fossa

Answer 2

space found inferior to the zygomatic arch

Question 3

boundaries of the infratemporal fossa

Answer 3

Lateral=Ramus of Mandible Anterior=Maxilla Medial=Lateral Pterygoid Plate Roof=Sphenoid Posterior = Tympanic plate & mastoid and styloid processes Inferior = Angle of Mandible

Question 4

Contents of the infratemporal fossa

Answer 4

Inferior portion of Temporalis m.; Lateral & Medial Pterygoid muscles; Maxillary a.; Pterygoid venous plexus; Nervous Structures: inferior alveolar (V 3 ); Lingual (V 3 ); Buccal (V 3): Chorda tympani (CN VII); Otic ganglion

Question 5

Bones of the Temporal Fossa (labeled)

Answer 5

Question 6

Lateral view vasculature (labeled)

Answer 6

Question 7

Muscles of Mastication

Answer 7

refers to process of chewing; innervated by Trigeminal N; move the mandible at the temporomandibular joint; 4 paired muscles - temporalis, masseter, lateral pterygoids, medial pterygoids

Question 8

Answer 8

top: lateral pterygoid
middle: medial pterygoid
bottom: masseter

Question 9

Answer 9

Top: temporalis

2nd: masseter
3rd: buccinator
4th: orbicularic oris

(3rd + 4th = CNVII)

Question 10

What 2 muscles function close to the jaw?

Answer 10

temporalis and masseter

Question 11

label the 2nd and 3rd lines and the function of the 3rd?

Answer 11

2nd: lateral pterygoid
3rd: medial pterygoid - elevates and protracts the mandible

Question 12

Posterior view of mandibular sling (labeled)

Answer 12

Question 13

What opens the mandible?

Answer 13

gravity, anterior digastric, lateral pterygoid (inferior part)

Question 14

Function of Temporalis

Answer 14

elevates and retracts mandible

Question 15

function of Masseter

Answer 15

elevates and protracts mandible; prime mover of jaw closure

Question 16

function of lateral pterygoid

Answer 16

protracts mandible; produces side-to-side movement of mandible

Question 17

function of medial pterygoid

Answer 17

elevates and protracts mandible; prduces side-to-side movement of mandible

Question 18

Movements of the temporomandibular joint

Answer 18

Elevation (temporalis, masseter, medial pterygoids); Depression (lateral pterygoids, suprahyoid & infrahyoid muscles); Protrusion (lateral pterygoids, masseter, medial pterygoids); Retrusion (temporalis, masseter); Lateral Movements (ipsilateral temporalis,contralateral pterygoids, masseter)

Question 19

biggest arrow?

Answer 19

Temporomandibular joint capsule

Question 20

Joint capsue (labeled) sagital section

Answer 20

Question 21

Ligaments (labeled)

Answer 21

Question 22

Innervation (labeled) V3, etc

Answer 22

Question 23

Deeper innervation (labeled)

Answer 23

Question 24

Oral cavity coronal section (labeled)

Answer 24

Question 25

Open mouth labeled

Answer 25

Question 26

Hemisection of mouth (labeled)

Answer 26

Question 27

Intrinsic muscles of the tongue

Answer 27

curl, squeeze and fold the tongue during chewing and speaking.

Question 28

extrinsic muscles of the tongue

Answer 28

originate on other head and neck structures and insert on the tongue. glossus = “tongue”

Question 29

left and right genioglassus muscles

Answer 29

originate on the mandible and protract the tongue

Question 30

left and right styloglossus muscles

Answer 30

originate on the styloid processes of the temporal bone; elevate and retract the tongue (pull back into the mouth)

Question 31

left and right hyoglossus muscles

Answer 31

originate at the hyoid bone and insert on the sides of the tongue; depress and retract the tongue

Question 32

left and right palatoglossus muscles

Answer 32

originate on the soft palate; elevate the posterior portion of the tongue

Question 33

Muscles of the tongue (labeled)

Answer 33

Question 34

pharynx

Answer 34

“throat”; funnenl-shaped tube that lies posterior to both the oral and nasal cavitites; muscles help form or attach to this tube and aid in swalowing; primary pharynx muscles are the pharyngeal constrictors; initiate swallowing and force bolus inferior into esophagus; help elevate or tense palate when swallowing

Question 35

pharynx muscles (labeled)

Answer 35

Question 36

if a muscle has the root “tensor” in its name, it’s innervated by what nerve?

Answer 36

CN V (Trigeminal)

Question 37

if a muscle has the root “palat-“ in its name, it’s innervated by what nerve?

Answer 37

CN X (Vagus)

Question 38

If a muscle has the root “-glossus” in its name, it’s innervated by what nerve?

Answer 38

CN XII (Hypoglossal)

Question 39

What are the 3 laryngeal elevators?

Answer 39

palatopharyngeus; salpingopharyngeus; stylopharyngeus (they all elevate the larynx and pharynx)

Question 40

Innervation of the laryngeal elevator muscles

Answer 40

palatopharyngeus and salpingopharyngeus innervated by CN X (Vagus) and stylopharyngeus is innervated by CN IX (glossopharyngeal)

Question 41

What are the palate muscles?

Answer 41

levator veli palatini (levator, velum, palato); tensor veli palatini

Question 42

Innervation of the palate muscles

Answer 42

Levator veli palatini - CN X (Vagus) and Tensor veli palatini - CN V3 (mandibular branch of Trigeminal)

Question 43

What are the pharyngeal constrictor muscles?

Answer 43

superior constrictor; middle constrictor; inferior constrictor

Question 44

What is the innervation of the pharyngeal constrictor muscles?

Answer 44

All innervated by CN X (Vagus)

Question 45

What are the muscles that move the tongue and their innervation?

Answer 45

Genioglossus (CN XII Hypoglossal); Styloglossus (CN XII - hypoglossal); Hyoglossus (CN XII - hypoglossal); palatoglossus (CN X - Vagus)