Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Human Form & Function > Muscles of Mastication, Infratemporal Fossa, TMJ > Flashcards

Muscles of Mastication, Infratemporal Fossa, TMJ Flashcards

1
Q

what are the six components of the temporomandibular joint?

A

Mandibular fossa
Articular disc
Mandibular condyle
Joint capsule
Inferior joint space
Superior joint space

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

what is the first and second movements of the jaw?

A

rotation then translation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

masseter origin and insertion

A

zygomatic arch
angle and ramus of mandible

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

function of masseter

A

elevate mandible
(protrusion by superficial head)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

what does the temporal fossa contain?

A

temporalis
superficial temporal a.
deep temporal a.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

temporalis origin and insertion

A

temporal fossa
coronoid process (mandible)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

temporalis function

A

elevate mandible
retrusion of mandible

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

lateral pterygoid origin and insertion

A

– Origin
* Superior head – greater wing
sphenoid
* Inferior head – lateral wall of lateral
pterygoid plate

– Insertion
* Superior head - articular disk and TMJ
capsule
* Inferior Head - Pterygoid fovea of
condyle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

lateral pterygoid function

A

protrusion of mandible

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

medial pterygoid origin and insertion

A

-Origin:
* Deep Head: Medial surface of lateral
pterygoid plate/pterygoid fossa
* Superficial head: Maxillary tuberosity

-Insertion:
* Medial surface of ramus/angle of mandible

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

medial pterygoid function

A

elevation of mandible
protrusion of mandible
minor: lateral excursion of mandible

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

muscles of mastication (4)

A

temporalis
masseter
lateral pterygoid
medial pterygoid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

movements of the jaw

A
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

inratemporal fossa is the space below the…

A

temporal fossa

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

most of the temporalis is in the ____ fossa

A

temporal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

masseter is ____ to the infratemporal fossa

A

external

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

medial pterygoid is ___ to the infratemporal

A

internal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

lateral pterygoid is ___ to the infratemporal

A

internal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

neurovasculature of the temporalis, masseter, medial/later pterygoids run within what?

A

infratemporal fossa

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

What arteries are the temporal fossa mostly vascularized by?

A

superficial temporal a.
anterior deep temporal a.
posterior deep temporal a.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

what branch of the external carotid a. innervates the infratemporal fossa?

A

maxillary a.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

3 anatomic subdivisions of the maxillary a.

A
  1. mandibular
  2. pterygoid
  3. pterygopalatine
23
Q

mandibular branches: #
pterygoid branches: #
pterygopalatine branches: #

A

mandibular branches: 4
pterygoid branches: 4
pterygopalatine branches: 5

24
Q

mandibular a. branches

A

ascending:
*deep auricular a.
*anterior tympanic a.
*middle meningeal a.

descending:
*inferior alveolar a. (mylohyoid a.)

25
Q

deep auricular a. supplies (3)

A
  • TMJ
  • Tympanic membrane
  • External acoustic meatus
26
Q

anterior tympanic a. supplies the

A

middle ear cavity

27
Q

middle meningeal a. supplies the

A

cranial dura

28
Q

inferior alveolar a. supplies the

A

teeth
gums
chin
lower lip
*ends at mental foramen

29
Q

mental a. anastomosis with what?

A

inferior labial a.

30
Q

branches of the pterygoid a. (4)

A

masseteric a.
pterygoid a.
buccal a.
deep temporal a.

31
Q

what drains the infratemporal fossa?

A

*superficial temporal v.

*pterygoid plexus
(drains to maxillary vein -> IJV -> EJV)

32
Q

veins serving tissue supplied by the maxillary artery drain into ___ ___

A

pterygoid plexus

33
Q

What main nerve innervates the temporal fossa?

A

CN V3 (3 branches)

34
Q

branches of CN V3 that innervate the temporal fossa (3)

A

auriculotemporal n. (sensory)
posterior deep temporal n. (motor)
anterior deep temporal n. (motor)

35
Q

auriculotemporal n.: sensory or motor
posterior deep temporal n.: sensory or motor
anterior deep temporal n.: sensory or motor

A

auriculotemporal n. (sensory)
posterior deep temporal n. (motor)
anterior deep temporal n. (motor)

*branches of CN V-3 - ITF

36
Q

infratemporal fossa branches of CN V -3 (6)

A

Meningeal n.
Masseteric n.
Deep temporal n.
Lateral pterygoid n.
Medial pterygoid n.
Long Buccal n.

37
Q

long buccal n. innervates

A
  • Skin lateral to buccinator
  • Mucus membrane medial to buccinator
  • Buccal gingiva of the mandibular molar
38
Q

CN V-3 ____ foramen

A

ovale

39
Q

Auriculotemporal n. runs ____ and ____ to the parotid gland

A

posterior and deep

40
Q

Auriculotemporal n. innervates

A
  • Sensory to the skin surrounding and above the ear
  • External acoustic meatus
  • Outer tympanic membrane
  • Some small branches to the TMJ as well
41
Q

Lesser petrosal n. (CN IX) is ____ motor

A

visceral

42
Q

what nerve runs with Auriculotemporal n. to parotid gland?

A

lesser petrosal n. (CN IX)

43
Q

what nerve synpases in the otic ganglia?

A

lesser petrosal n. (CN IX)

44
Q

what nerve runs with lesser petrosal n. to parotid gland?

A

Auriculotemporal n.

45
Q

lesser petrosal n. (CN IX) is sympathetic or parasympathetic?

A

parasympathetic

46
Q

lingual n. innervation

A
  • General sensation for anterior 2/3
    tongue
  • Lingual side gingiva. Floor of mouth
    mucosa
47
Q

what nerve hitchikes with the lingual nerve?

A

chorda tympani (CN VII)

48
Q

what nerve hitchhikes on CN V-3/lingual nerve?

A

chorda tympani

49
Q

chorda tympani hitchhikes with what other nerve?

A

lingual nerve (CN V-3)

50
Q

inferior alveolar n. runs on the ____ side of the ramus of mandible

A

medial

51
Q

what does the inferior alveolar n. exit through?

A

mandibular foramen

52
Q

inferior alveolar n. innervation

A

General sensation for mandibular teeth
and buccal gingiva

53
Q

branches of the inferior alveolar n.

A
  • Mylohyoid n. – early branch, to mylohyoid muscle
  • Mental n. – thru mental foramen, skin over chin
  • Incisive n. – continuation in mandible past mental
    foramen, serves 1st premolar, canine, incisors, and
    gingiva

Human Form & Function (48 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions