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Spinal > Exam 3: Head > Flashcards

Exam 3: Head Flashcards

1
Q

What part of skull is derived from endochondral oss

A

Chondrocranium

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2
Q

What bones formed from chondrocranium

A

Inf nasal concha, ethmoid, part of mandible, sphenoid, temporal and occipital

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3
Q

Which skull bones are ossified by both endochondral and intramembranous oss

A

Mandible, sphenoid, temporal and occipital

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4
Q

Which bone of appendicular skeleton formed by both types of oss

A

Clavicle

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5
Q

How many bones form skull

A

28 (including auditory ossicles)

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6
Q

What is cranium

A

Skull minus mandible

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7
Q

Characteristics of sutura notha (false sutures)

A

Sutures lacking interlocking of adjacent bone surfaces; formed by endochondral oss

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8
Q

What is classification of a joint w/ nail-like condition

A

Gomphosis

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9
Q

Classification of a joint with fissure-like condition

A

Schindylesis

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10
Q

What are examples of schindylesis type of suture

A

Sphenoid — ethmoid — vomer

Palatine — maxilla — vomer

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11
Q

Examples of gomphosis joint

A

Maxilla — root of tooth

Mandible — root of tooth

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12
Q

Ligament associated w/ gomphosis

A

Periodontal lig

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13
Q

5 views of skull

A

Norma: verticalis, frontalis, occipitalis, lateralis, basalis

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14
Q

Diamond shaped remnant of developing membrane bone at intersection of frontal w/ parietal bones

A

Anterior fontanelle

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15
Q

Diamond shaped remnant of developing membrane bone at intersection of occipital w/ both parietal bones

A

Posterior fontanelle

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16
Q

What is the glabella

A

Elevation of bone over frontal sinus between orbits

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17
Q

What is name given to indentation of bone between nasal and frontal bones

A

Nasion

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18
Q

Name given to outline of nasal cavity at front of skull

A

Piriform aperture

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19
Q

Name given to alveolar jugum of canine tooth in maxilla

A

Canine eminence

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20
Q

Depression of maxilla occurs medial to canine eminence

A

Incisive fossa

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21
Q

What forms bullet-like chin

A

Large mental protuberance

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22
Q

What forms indented chin

A

Well developed bilateral mental tubercles and slight mental protuberance

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23
Q

What is tip of external occipital protuberance called

A

Inion

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24
Q

Bones that form pterion

A

Parietal
Temporal
Sphenoid
Frontal

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25
Q

Bones that form asterion

A

Parietal
Temporal
Occipital

26
Q

Styloid process is feature of what bone

A

Temporal

27
Q

Points on skull used to measure skull size

A

Nasion
Vertex
Inion
Gnathion

28
Q

Points on skull used to measure cranial vault capacity

A

Nasion
Vertex
Inion

29
Q

Appearance of suture intersections over hard palate

A

Cruciate or cruciform suture

30
Q

Posterior boundary of anterior cranial fossa

A

Line drawn along lesser wing of sphenoid, anterior clinoid processes and sphenoidal jugum

31
Q

Ostia observed in anterior cranial fossa

A

Cribriform plate
Anterior/posterior ethmoid foramina
Foramen cecum

32
Q

What passes thru cribriform plate

A

Fila olfactoris of CN I (olfactory n)

33
Q

An emissary vein leaves anterior cranial fossa via what opening

A

Foramen cecum

34
Q

What are anterior boundaries for middle cranial fossa

A

Lesser wings, anterior clinoid and sphenoidal jugum of sphenoid

35
Q

What are posterior boundaries for middle cranial fossa

A

Superior border of petrous part of temporal, posterior clinoid and dorsum sella of sphenoid

36
Q

Bony feature that is prominent in medial plane of middle cranial fossa

A

Sella turcica

37
Q

What forms roof of sella turcica

A

Diaphragma sella

38
Q

Neural structure occupies sell turcica

A

Hypophysis cerebri (pituitary gland)

39
Q

Contents of optic canal

A

Optic nerve and ophthalmic artery

40
Q

Contents of superior orbital fissure

A

Ophthalmic V
Oculomotor and trochlear N
Ophthalmic div of trigeminal
Abducent N

41
Q

Single opening that allows exit of greatest number of cranial nerves

A

Superior orbital fissure

42
Q

Unique about ophthalmic A and V

A

Don’t share same opening
Artery = optic canal
Veins= superior orbital fissure

43
Q

Maxillary division of trigeminal exits middle cranial fossa via which opening

A

Foramen rotundum

44
Q

What are contents of foramen ovale

A

Mandibular division of tri

Lesser petrosal branch of glossopharyngeal

45
Q

Contents of foramen spinosum

A

Nervus spinosus from mandibular div trigeminal

Middle meningeal A

46
Q

Opening allows branch of CN Vc to enter middle cranial fossa from infratemporal region

A

Foramen spinosum

47
Q

Vessel located within foramen spinosum

A

Middle meningeal A

48
Q

Contents of foramen lacerum

A

Internal carotid A
Carotid sympathetic N plexus
Venous plexus

49
Q

Contents of carotid canal

A

Internal carotid A

Carotid sympathetic N plexus

50
Q

Contents of hiatus for greater petrosal nerve

A

Greater petrosal N, branch of facial N

51
Q

Contents of vidial/pterygoid canal

A

Vidian N or N of pterygoid canal

52
Q

Contents of hiatus for lesser petrosal N

A

Lesser petrosal N, a branch of tympanic plexus from glossopharyngeal N

53
Q

What forms roof of posterior cranial fossa

A

Tentorium cerebelli

54
Q

Part of cerebrum occupies posterior cranial fossa

A

None

55
Q

Part of CNS that occupies posterior cranial fossa

A

Cerebellum
Pons
Medulla oblongata

56
Q

Bony feature prominent in median plane of posterior cranial fossa

A

Clivus or basilar part of occipital bone

57
Q

Cranial nerves that exit posterior cranial fossa ostia

A

CN VII, VIII, IX, X, XI, XII

58
Q

Which ostia allow exit from posterior cranial fossa

A

Foramen magnum
Internal acoustic meatus
Jugular foramen
Hypoglossal and condylar canals

59
Q

Jugular bulb

A

Venous expansion between sigmoid DVS and internal jugular vein

60
Q

Function of jugular body/glomus

A

Chemoreceptive organ, monitors hypoxia, hypercapnia and increases H ion

61
Q

Cranial nerves located within hypoglossal canal

A

CN XII hypoglossal

62
Q

Contents of condylar canal

A

Emissary V connection sigmoid DVS and vertebral venous plexus

Spinal (27 decks)

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