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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
Jugular foramen
Junction of the occipital and temporal bones Carries internal jugular vein, glossopharyngeal nerve, vagus nerve, spinal accessory nerve
26
Foramen magnum
Found on occipital bone Largest opening Carries spinal cord and vertebral arteries
27
Cribiform plate
Found in ethmoid bone Openings for olfactory nerve
28
Foramen rotundum
Sphenoid bone Opening for maxillary division (D2) of trigeminal nerve
29
Internal acoustic meatus
Temporal bone Opening for facial nerve Vestibulocochlear nerve
30
Hypoglossal canal
Occipital bone Opening for hypoglossal nerve
31
Basilar portion of occipital bone
Four sided plate Anterior to foramen magnum
32
Pharyngeal tubercle
Midline projection on the basilar portion of occipital
33
Jugular notch
Medial portion of jugular foramen
34
Occipital condyles
2 curved smooth projections Movable articulation with 1st cervical vertebra
35
Super nuchal line
Origin attachment for sternocleidomastoid, trapezius and occipitalis
36
Inferior nuchal line
Muscle attachment site
37
External occipital protuberance
Celphalometric landmark “inion”
38
Nasolacrimal duct
Drains fluid (tears) into nasal cavity Formed below frontal between maxilla and lacrimal bones
39
Supraorbital ridges
Curved elevations over the superior portion of the orbit
40
Supraorbital notch
Medial portion of ridge Supraorbital artery & nerve pass to forehead Note: firm palpation causes pressure
41
Glabella
Smooth elevation between the eyebrows
42
Zygomatic process of the frontal bone
Bony projection lateral to the orbit
43
Lacrimal fossa
Inside the lower portion of the supraorbital Ridge
44
Lacrimal gland
Inside Fossa, produces lacrimal fluid
45
Squamous portion of temporal bone
Flat, fan shaped Forms part of the brain case
46
Articular eminence
Round raised bony structure Stop point for the moving mandibular condyle
47
Articular fossa
Depression for mandibular condyle
48
Postglenoid process
Sharper ridge, just posterior to the articular fossa
49
Tympanic portion of temporal bone
Forms external acoustic meatus Located posterior to postglenoid process Passage for chorda tympani nerve- branch of facial nerve
50
Petrotympanic fissure
Separates tympanic portion from petrosal part Passage for chorda tympani nerve
51
Petrus portion
Inferior aspect of temporal Bone Houses the inner ear
52
Mastoid process
Large, rounded, roughened projection, posterior to external acoustic meatus Attachment point: sternocleidomastoid muscle
53
Mastoid notch
Depression just medial to the mastoid process
54
Styloid process
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
Stylomastoid foramen
Between styloid process and the mastoid process Facial nerve exit here
56
Internal acoustic meatus
Vestibulocochlear nerve passes from brain to school and remains in the Petrus portion
57
Lesser wing of sphenoid bone
Makes up base of orbit apex
58
Greater wing of sphenoid
Posterolateral process Makes up posterior part of lateral wall of the orbit
59
Pterygoid process
Located inferior to the greater wing of the sphenoid Lateral pterygoid plate Medial pterygoid plate
60
Hamulus
Thin curved process Inferior termination of medial pterygoid plate
61
Where does the body of the sphenoid articulate and what does it contain?
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
Ethmoid bone
Single bone Articulates with the frontal, sphenoid, lacrimal and maxilla Joins the vomer on its inferior and posterior border
63
Orbital plate of ethmoid bone
Formed the medial Orbit wall
64
Perpendicular plate of ethmoid
Forms the superior portion of nasal septum Articulates with the vomer and nasal septal cartilage
65
Cristea galli
Internal anterior midline elevation of the ethmoid bone Attachment: Connective tissue membrane covering the brain
66
Horizontal cribiform plate
Internal aspect at anterior midline foramina: olfactory nerve
67
Divisions of the ethmoid sinuses
Anterior Middle Posterior
68
Vomer
Single bone Articulates at ethmoid, sphenoid, palatine, maxilla and nasal cartilage Forms the inferior portion of nasal septum. No muscle attachments
69
Lacrimal bones
Paired Formed the Anteromedial Orbital wall
70
Nasolacrimal duct
Formed by the junction of lacrimal and maxillary bones
71
Nasal bones
Paired Forms the bridge of the nose
72
Inferior nasal conchae
Forms part of lateral wall of the nasal cavity
73
Zygomatic bone
Paired Forms the prominence of the cheek (malar surfaces)
74
Frontal process of zygomatic bone
Forms the Anterolateral Orbital wall
75
Temporal process of zygomatic bone
Forms the anterior portion of the zygomatic arch | posterior portion is formed by zygomatic process of temporal bone
76
Maxillary process of zygomatic bone
Forms portion of infraorbital rim and small portion of Anterolateral orbital wall
77
Optic canal
Opening in orbital apex— closest to the lesser wing of the sphenoid bone Carries the optic nerve and ophthalmic artery to the eye
78
Superior orbital fissure
Connects with cranial cavity Found between lesser and greater wings of sphenoid
79
Inferior orbital fissure
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
Infratemporal fossa
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
Pterygopalatine fossa
Boundaries: maxillary tuberosity, pterygomaxillary fissure, palatine foramen, internal pterygoid plate, pterygopalatine canal Contents: maxillary artery branches- infraorbital artery, sphenopalatine artery Trigeminal- maxillary division
82
Zygomatic arch
Cheek bone
83
Hard palate — anterior 2/3
Forms the roof of the mouth and floor of the nasal cavity
84
Hard palate — posterior 1/3
Forms the posterior transverse plane
85
Hard palate sutures
Median palatine suture (midline) Transverse palatine suture (articulation btw anterior 2/3 and posterior 1/3)
86
Posterior nasal apertures/ Choanae
Forms the posterior openings of the nasal cavity
87
Frontal bone
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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