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Unit 3 Human Anatomy > Lectures 27-28 > Flashcards

Lectures 27-28 Flashcards

1
Q

Masseter origin/insertion

A

O: zygomatic arch
I: lateral surface of ramus, angle, and body of mandible

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2
Q

strongest muscle in the body

A

masseter

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3
Q

innervation of mastication (chewing muscles)

A

motor portion of mandibular division (V3) of trigeminal nerve (CN 5)

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4
Q

temporalis origin/insertion

A

O: temporalis fossa of temporal bone
I: coronoid process of mandible

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5
Q

medial pterygoid origin/insertion

A

O: between medial and lateral pterygoid plates
I: medial surface of ramus, angle, and body of mandible

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6
Q

lateral pterygoid origin/insertion

A

O: lateral pterygoid plate
I: anterior neck of mandibular condyle

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7
Q

2 things that always occur when the jaw is opened

A
  1. condyle is placed anteriorly (jaw partially dislocates)

2. mandible is depressed

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8
Q

elevation of the mandible is mostly accomplished by the

A

masseter and medial pterygoid

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9
Q

the masseter and medial pterygoid form the ___, which suspends the mandible

A

mandibular sling

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10
Q

the lateral pterygoid causes the mandible to

A

protrude

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11
Q

suprahyoid group

A

mylohyoid, anterior belly of digastric, geniohyoid

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12
Q

ligaments of the TMJ

A

articular capsule, articular disk, temporomandibular ligament, stylomandibular ligament, sphenomandibular ligament

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13
Q

supplies sensation to the lower teeth and aveolar surface of the mandible, the chin

A

mandibular division via its inferior alveolar branch

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14
Q

the inferior alveolar nerve enters through the ___ and exits through the ___

A

mandibular foramen, mental foramen

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15
Q

the area medial to the ramus of the mandible

A

infratemporal fossa

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16
Q

the pterygoid plexus communicate with the

A

inferior ophthalmic vein

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17
Q

the inferior ophthalmic vein drains into the

A

cavernous sinus

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18
Q

the cavernous sinus drains into the ___ via the ___

A

sigmoid sinus, greater and lesser petrosal sinuses

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19
Q

formed by clumps of bacteria from an infection on the side of the face

A

cavernous sinus thrombus

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20
Q

anterior boundary of infratemporal fossa

A

maxilla

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21
Q

superior boundary of infratemporal fossa

A

greater wing of sphenoid

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22
Q

medial boundary of infratemporal fossa

A

lateral pterygoid plate

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23
Q

lateral boundary of infratemporal fossa

A

ramus of mandible

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24
Q

posterior boundary of infratemporal fossa

A

spine of sphenoid

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25
Q

contents of infratemporal fossa

A

maxillary artery and its branches, pterygoid plexus of veins, inferior alveolar nerve w/br. to mylohyoid, lingual nerve, medial and lateral ptergoid muscles, chordates tympani nerve, otic ganglion, auriculotemporal nerve

26
Q

4 branches of V3

A

inferior alveolar n, lingual n, buccal n, auricultotemporal n

27
Q

parts of the nose

A

free tip, root, external nares (nostrils) and ala

28
Q

entrance of the nose

A

external nares (nostrils)

29
Q

what the external nares are separated by

A

nasal septum

30
Q

nasal septum consists of

A

anterior, cartilaginous part and posterior, bony part

31
Q

bony framework of the nose includes

A

2 nasal bones, 2 frontal portions of maxillary bones, 2 nasal portions of frontal bone

32
Q

opening to nose in cranium

A

piriform fossa

33
Q

function of nasalis muscle

A

opens the nostrils

34
Q

function of depresso septi muscle

A

stabilizes the septum

35
Q

depression between the 2 ridges created in septum

A

philtrum

36
Q

function of levator palpebrae superioris plaque muscle

A

scrunches nose

37
Q

what divides the nasal cavity into right and left chambers

A

nasal septum

38
Q

airway of the external nose

A

vestibule

39
Q

skin to mucus membrane connection

A

limen nasi

40
Q

2 other regions of nasal cavity

A

olfactory and respiratory regions

41
Q

bones of nasal septum

A

perpendicular plate of ethmoid bone, vomer, perpendicular plate of palatine bone

42
Q

floor of nasal cavity

A

palatine processes of maxillary bone and horizontal plates of palatine bone

43
Q

roof of nasal cavity

A

cribriform plate of ethmoid bone

44
Q

also known as turbinate bones; often found on lateral walls of nasal cavity

A

conchae

45
Q

passageways of nasal cavity

A

meati

46
Q

where sphenoid sinus drains

A

spheno-ethmoidal recess

47
Q

bulge lying underneath the middle conchae, caused by the middle ethmoid air cells

A

ethmoid bulla

48
Q

cleft lying underneath the middle conchae where the maxillary sinus, frontal sinus, and anterior ethmoidal air cells drain

A

hiatus semilunaris

49
Q

opening for nasolacrimal duct

A

lacrimal apparatus

50
Q

relieves tears that migrate medially across conjunctiva

A

lacrimal gland

51
Q

collects tears

A

lacrimal lake

52
Q

red tissue in lake

A

lacrimal caruncle

53
Q

on medial eye lid, small bump

A

lacrimal papillae

54
Q

from puncta to sac

A

lacrimal canaliculi

55
Q

to nasolacrimal duct

A

lacrimal sac

56
Q

drains into nasal cavity; nose runs when you cry

A

nasolacrimal duct

57
Q

supply nasal cavity for sense of smell

A

olfactory nerves

58
Q

sensation is supplied by branches of the

A

trigeminal nerve

59
Q

present for the control of secretions and blood flow

A

sympathetic/parasympathetic innervation

60
Q

primary blood flow to the nasal cavity is via the posteriorly entering ___ artery

A

sphenopalatine

61
Q

branches of sphenopalatine artery

A

anterior and posterior ethmoidal arteries, greater palatine artery, nasal br. of facial artery

62
Q

give resonance to the voice and lighten the skill

A

paranasal sinuses

Unit 3 Human Anatomy (8 decks)

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