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115 Oral, Head And Neck Anatomy > Skeletal System > Flashcards

Skeletal System Flashcards

1
Q

8 cranial bones

A 
Frontal
Parietal (2)
Temporal (2)
Occipital
Ethmoid
Sphenoid
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2
Q

14 facial/viscerocranium bones

A 
Lacrimal (2)
Nasal (2)
Zygomatic (2)
Inferior nasal conchae (2)
Vomer
Maxilla (2)
Palatine (2)
Mandible
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3
Q

Cranial sutures

A

Coronal- frontal/parietal

Sagittal- parietal bones

Lambdoidal- occipital/parietals

Squamosal- temporal and parietals

Temporozygomatic- temporal/zygomatic

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4
Q

Sutures of the maxilla

A

Median palatine- palatine process of maxilla

Transverse palatine- palatine process of max and the horizontal palatine bones

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5
Q

Single bones

A 
Frontal
Ethmoid
Vomer
Sphenoid
Mandible
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6
Q

Paired bones

A 
Lacrimal
Nasal
Inferior nasal conchae
Zygomatic
Maxilla
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7
Q

Bones that make up the orbit wall & orbital apex

A 
Frontal
Zygomatic
Maxilla
Lacrimal bone
Ethmoid bone
Lesser wing of sphenoid & palatine
Greater wing of the sphenoid
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8
Q

Nerves that enter the Orbit through superior orbital fissure

A 
Oculomotor
Trochlear
Abductees
Ophthalmic division (D1)
Ophthalmic vein
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9
Q

Nerves and veins that enter the orbit through the inferior orbital fissure

A

Infraorbital and zygomatic nerves
Infraorbital artery
Inferior ophthalmic vein

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10
Q

Nasion

A

Midpoint, junction of the frontal and nasal bones

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11
Q

Bridge of nose

A

Formed by paired nasal bones

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12
Q

Piriform aperture?

A

Anterior opening, large and triangular

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13
Q

Nasal septum

A

Vertical portion. Divides the nasal cavity into two portions

Superior aspect: perpendicular plate of ethmoid and septum cartilage

Inferior aspect: vomer

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14
Q

Nasal conchae

A

Lateral walls of nasal cavity (scroll-like projections)

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15
Q

Nasal meatus

A

Passageway beneath each conchae

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16
Q

Ostia

A

Opening in each meatus

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17
Q

Pterion

A

Weakest part of the skull

Articulates at frontal, temporal, parietal and sphenoid

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18
Q

Temporal fossa

A

Articulates at parietal, frontal, greater wing of sphenoid, temporal and zygomatic

Contains temporalis muscle, superficial temporal artery, anterior meningeal artery, deep temporal artery, zygomaticotemporal nerve

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19
Q

Temporomandibular joint

A

Movable articulation of the mandible (condyle) with the temporal bone (temporal fossa)

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20
Q

Foramen ovale

A

Located on the sphenoid

Carries mandibular division (D3) of trigeminal nerve

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21
Q

Foramen lacerum

A

Junction of occipital, temporal and sphenoid

Large/irregular shaped opening

Internal carotid artery emerges here from the carotid canal

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22
Q

Foramen spinosum

A

Located on the sphenoid posterior and lateral to the foramen ovale

Carries middle meningeal artery into the skull

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23
Q

Stylomastoid foramen

A

Located on the temporal bone

Carries facial nerve

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24
Q

Carotid canal

A

Located on temporal bone

Carries internal carotid artery and sympathetic carotid plexus

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25
Q

Jugular foramen

A

Junction of the occipital and temporal bones

Carries internal jugular vein, glossopharyngeal nerve, vagus nerve, spinal accessory nerve

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26
Q

Foramen magnum

A

Found on occipital bone

Largest opening

Carries spinal cord and vertebral arteries

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27
Q

Cribiform plate

A

Found in ethmoid bone

Openings for olfactory nerve

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28
Q

Foramen rotundum

A

Sphenoid bone

Opening for maxillary division (D2) of trigeminal nerve

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29
Q

Internal acoustic meatus

A

Temporal bone

Opening for facial nerve
Vestibulocochlear nerve

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30
Q

Hypoglossal canal

A

Occipital bone

Opening for hypoglossal nerve

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31
Q

Basilar portion of occipital bone

A

Four sided plate

Anterior to foramen magnum

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32
Q

Pharyngeal tubercle

A

Midline projection on the basilar portion of occipital

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33
Q

Jugular notch

A

Medial portion of jugular foramen

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34
Q

Occipital condyles

A

2 curved smooth projections

Movable articulation with 1st cervical vertebra

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35
Q

Super nuchal line

A

Origin attachment for sternocleidomastoid, trapezius and occipitalis

36
Q

Inferior nuchal line

A

Muscle attachment site

37
Q

External occipital protuberance

A

Celphalometric landmark “inion”

38
Q

Nasolacrimal duct

A

Drains fluid (tears) into nasal cavity

Formed below frontal between maxilla and lacrimal bones

39
Q

Supraorbital ridges

A

Curved elevations over the superior portion of the orbit

40
Q

Supraorbital notch

A

Medial portion of ridge

Supraorbital artery & nerve pass to forehead

Note: firm palpation causes pressure

41
Q

Glabella

A

Smooth elevation between the eyebrows

42
Q

Zygomatic process of the frontal bone

A

Bony projection lateral to the orbit

43
Q

Lacrimal fossa

A

Inside the lower portion of the supraorbital Ridge

44
Q

Lacrimal gland

A

Inside Fossa, produces lacrimal fluid

45
Q

Squamous portion of temporal bone

A

Flat, fan shaped

Forms part of the brain case

46
Q

Articular eminence

A

Round raised bony structure

Stop point for the moving mandibular condyle

47
Q

Articular fossa

A

Depression for mandibular condyle

48
Q

Postglenoid process

A

Sharper ridge, just posterior to the articular fossa

49
Q

Tympanic portion of temporal bone

A

Forms external acoustic meatus

Located posterior to postglenoid process

Passage for chorda tympani nerve- branch of facial nerve

50
Q

Petrotympanic fissure

A

Separates tympanic portion from petrosal part

Passage for chorda tympani nerve

51
Q

Petrus portion

A

Inferior aspect of temporal
Bone

Houses the inner ear

52
Q

Mastoid process

A

Large, rounded, roughened projection, posterior to external acoustic meatus

Attachment point: sternocleidomastoid muscle

53
Q

Mastoid notch

A

Depression just medial to the mastoid process

54
Q

Styloid process

A

Long pointed bony projection

Located medial to external acoustic meatus or lateral to the carotid canal

Attachment point: stylohyoid muscle, Styloglossus muscle and Stylopharyngus muscle
Stylohyoid ligament and Stylomandibular ligament

55
Q

Stylomastoid foramen

A

Between styloid process and the mastoid process

Facial nerve exit here

56
Q

Internal acoustic meatus

A

Vestibulocochlear nerve passes from brain to school and remains in the Petrus portion

57
Q

Lesser wing of sphenoid bone

A

Makes up base of orbit apex

58
Q

Greater wing of sphenoid

A

Posterolateral process

Makes up posterior part of lateral wall of the orbit

59
Q

Pterygoid process

A

Located inferior to the greater wing of the sphenoid

Lateral pterygoid plate
Medial pterygoid plate

60
Q

Hamulus

A

Thin curved process

Inferior termination of medial pterygoid plate

61
Q

Where does the body of the sphenoid articulate and what does it contain?

A

Articulates anteriorly w/ ethmoid
Posteriorly with basilar portion of occipital

Contains sphenoid sinuses and sella turcica- depression in center of sphenoid( location of pituitary)

62
Q

Ethmoid bone

A

Single bone

Articulates with the frontal, sphenoid, lacrimal and maxilla

Joins the vomer on its inferior and posterior border

63
Q

Orbital plate of ethmoid bone

A

Formed the medial Orbit wall

64
Q

Perpendicular plate of ethmoid

A

Forms the superior portion of nasal septum

Articulates with the vomer and nasal septal cartilage

65
Q

Cristea galli

A

Internal anterior midline elevation of the ethmoid bone

Attachment: Connective tissue membrane covering the brain

66
Q

Horizontal cribiform plate

A

Internal aspect at anterior midline foramina: olfactory nerve

67
Q

Divisions of the ethmoid sinuses

A

Anterior

Middle

Posterior

68
Q

Vomer

A

Single bone

Articulates at ethmoid, sphenoid, palatine, maxilla and nasal cartilage

Forms the inferior portion of nasal septum. No muscle attachments

69
Q

Lacrimal bones

A

Paired

Formed the Anteromedial Orbital wall

70
Q

Nasolacrimal duct

A

Formed by the junction of lacrimal and maxillary bones

71
Q

Nasal bones

A

Paired

Forms the bridge of the nose

72
Q

Inferior nasal conchae

A

Forms part of lateral wall of the nasal cavity

73
Q

Zygomatic bone

A

Paired

Forms the prominence of the cheek (malar surfaces)

74
Q

Frontal process of zygomatic bone

A

Forms the Anterolateral Orbital wall

75
Q

Temporal process of zygomatic bone

A

Forms the anterior portion of the zygomatic arch

posterior portion is formed by zygomatic process of temporal bone

76
Q

Maxillary process of zygomatic bone

A

Forms portion of infraorbital rim and small portion of Anterolateral orbital wall

77
Q

Optic canal

A

Opening in orbital apex— closest to the lesser wing of the sphenoid bone

Carries the optic nerve and ophthalmic artery to the eye

78
Q

Superior orbital fissure

A

Connects with cranial cavity

Found between lesser and greater wings of sphenoid

79
Q

Inferior orbital fissure

A

Separates maxilla’s orbital surface from the sphenoid bone

Connects with the infratemporal and pterygopalatine fossae

Found between the greater wing of sphenoid and maxilla

80
Q

Infratemporal fossa

A

Boundaries: greater wing of sphenoid, maxillary tuberosity, lateral pterygoid plate, zygomatic arch, mandibular ramus

Contents: medial pterygoid muscle, lateral pterygoid muscle, maxillary artery

Trigeminal nerve, mandibular division D3– inferior alveolar nerve, lingual nerve

81
Q

Pterygopalatine fossa

A

Boundaries: maxillary tuberosity, pterygomaxillary fissure, palatine foramen, internal pterygoid plate, pterygopalatine canal

Contents: maxillary artery branches- infraorbital artery, sphenopalatine artery

Trigeminal- maxillary division

82
Q

Zygomatic arch

A

Cheek bone

83
Q

Hard palate — anterior 2/3

A

Forms the roof of the mouth and floor of the nasal cavity

84
Q

Hard palate — posterior 1/3

A

Forms the posterior transverse plane

85
Q

Hard palate sutures

A

Median palatine suture (midline)

Transverse palatine suture (articulation btw anterior 2/3 and posterior 1/3)

86
Q

Posterior nasal apertures/ Choanae

A

Forms the posterior openings of the nasal cavity

87
Q

Frontal bone

A

Single bone— forms the forehead and superior portion of orbits

Contains the frontal sinuses (one of 4 pairs of paranasal sinuses)

115 Oral, Head And Neck Anatomy (25 decks)

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