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Anatomy Module 9 > RadioAnat > Flashcards

RadioAnat Flashcards

0
Q

Orbital bones: medial wall of the orbit

A

Ethmoid Bone

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1
Q

Orbital bone: Entire roof of the orbit

A

Frontal Bone

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2
Q

Orbital bone: medial wall and floor of the orbit

A

Maxilla Bone

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3
Q

Orbital bone: medial wall

A

Lacrimal bone

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4
Q

Orbital bone: lateral margin and floor of the orbit

A

Zygomatic Bone

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5
Q

Orbital bone: forms the apex

A

Sphenoid bone

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6
Q

MAXILLARY BONE
LACRIMAL BONE
ETHMOID BONE
BODY OF SPHENOID BONE

A

Median orbital wall

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7
Q

smallest bones, anterior part of the medial wall of orbits; in between ethmoid and maxilla

A

LACRIMAL BONE

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8
Q

MAXILLARY BONE
ZYGOMATIC BONE
PALATINE BONE

A

FLOOR OF ORBITAL BONE

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9
Q

ZYGOMATIC BONE

GREATER WING OF THE SPHENOID BONE

A

LATERAL WALL OF ORBITAL BONE

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10
Q

Frontal
Maxillary
Ethmoid
Sphenoid

A

Paranasal Sinuses

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11
Q

Excellent view for

Maxilla, Maxillary sinuses, Zygoma, Zygomatic arches, Rims of orbits (floor) and Nasal bones

A

Water’s View

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12
Q

Excellent view for
Entire rim of orbit - superomedial rim, Ethmoid sinus, Floor of orbit may be well seen in petrous bone are projected below the inferior orbital rim

A

Caldwell’s View

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13
Q

Key structures: Frontal sinus, Maxillary sinus, Frontal process of Zygoma, Body of Zygoma (malar eminence), Temporal process of Zygoma

Rule: smooth, non-disturpted, same contour on both sides

A

Water’s View

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14
Q

Key structures: Ethmoid sinuses and Orbit

Rule: Ethmoid sinuses density should be equal of darker than the orbit, smooth non-disrupted orbital walls

A

Caldwell’s View

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15
Q

Most comprehensive single projection display

A

Water’s view

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16
Q

Excellent view for
Maxillary Sinus: Posterolateral Wall
Zygomatic arch

A

Towne’s View

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17
Q

Key structures: Frontal sinus, Maxillary Sinus, Sphenoid Sinus, Hard Palate, Anterior wall of temporal fossa, Pterygoid plate

A

Towne’s View

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18
Q

Retrobulbar Fat, EOMS, Optic Nerve

A

Orbital Tissue

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19
Q

Superior, Inferior, Medial and Lateral

A

Recti Muscles

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20
Q

Superior and Inferior Oblique

A

Oblique Muscle

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21
Q

is a ring of fibrous tissue that surrounds the optic nerve at its entrance at the apex of the orbit.

A

Annulus of Zinn

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22
Q

Annulus of Zinn is the origin of these muscles except:

a. Superior Rectus
b. Inferior Rectus
c. Lateral Rectus
d. Superior Oblique

A

d. Superior Oblique

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23
Q

Pulley for the Superior Oblique Muscle

A

Trochlea

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24
Q

Water: Bright
Fat: Dark
Air/Bone: Dark

A

T2

25
Q

Water: Dark
Fat: Bright
Air/Bone: Dark

A

T1

26
Q

15-30 mm from the orbital rim

A

ANTERIOR ETHMOIDAL FORAMEN

27
Q

20-40 mm from the orbital rim

A

POSTERIOR ETHMOIDAL FORAMEN

28
Q

T1WI & T2WI: medium to low signal intensity

A

CORNEA/ SCLERA

29
Q

T1W1: low T2WI: high

A

ANTERIOR EYE CHAMBER

30
Q

98% water and less than 2% collagen

A

POSTERIOR EYE CHAMBER

31
Q

65% water and 35% protein

T1WI: intermediate T2WI: low

A

LENS

32
Q

Demarcates the anterior and posterior ethmoid air cells

A

Middle Turbinate

33
Q

All the paranasal sinuses drain into the middle meatus, EXCEPT

a. posterior ethmoid and sphenoid sinuses
b. ethmoid bulla and maxillary sinus
c. frontal sinus and maxillary sinus

A

a.posterior ethmoid and sphenoid sinuses

34
Q

Tympanic Membrane
Outer cartilagenous portions
Bony or osseous portion
Squamous epithelium

A

Parts of External Auditory Canal

35
Q

Flexible part of Tympanic Membrane

A

Par flaccida

36
Q

Tense part of Tympanic Membrane

A

Pars tensa

37
Q

Middle Ear Space: Superior to annulus

body of incus and head of malleus

A

Epitympanum (Attic)

38
Q

Middle Ear Space: on level with the TM (oval and round windows, long process of process of incus, articulation with stapes, facial nerve in bony canal)

A

Mesotympanum

39
Q

Below annulus (jugular bulb)

A

Hypotympanum

40
Q

In anterior recess of middle ear (eustachian tube)

A

Protympanum

41
Q

Posterior to annulus (sinus, tympani, facial recess)

A

Retrotympanum

42
Q

Spur - shaped bony projection top of tympanic membrane

A

Scutum

43
Q

anterior recess of TM, between neck of malleus and pars flaccida of tympanic membrane

A

Prussak’s space

44
Q

most common site of acquired attic cholesteatoma

A

Prussak’s space

45
Q

Head

Manubrium or handle

A

Malleus (Hammer)

46
Q

Long process
Short process
Lenticular process

A

Incus

47
Q

Foot plate
Capitulum
Ctus

A

Stapes

48
Q
  • arises form cartilaginous and bony margins of eustachian tube
  • inserts on handle of malleus
  • dampens ossicular chain
A

Tensor tympani membrane

49
Q
  • opening between middle and inner ear, associated with scala tympani
  • below oval window
A

Round window

50
Q

Medial wall of tympanic cavity formed by basal turn of cochlea

A

Promotory

51
Q
  • channel through which the tympanic cavity communicates with the nasopharynx.
  • approximately 36 mm in length and is directed downward, forward, and medialy, forming an angle of about 45 degrees with the sagittal plane
A

Eustachian Canal

52
Q
  • SEMICIRCULAR CANALS
  • COCHLEA
  • VESTIBULE
  • VESTIBULAR AQUEDUCT
A

Bony Labyrinth

53
Q
  • UTRICLE AND SACCULE
  • COCHLEAR DUCT
  • ENDOLYMPHATIC DUCT AND SAC
A

Membranous Labyrinth

54
Q

3 parts of semicircular canal

A
  • Superior semicircular canal (SSC)
  • Posterior semicircular canal (PSC)
  • Horizontal or Lateral semicircular canal
    (LSC)
55
Q

Axial: apical, middle, and basal turns (NORMAL)

A

Hamburger Sign

56
Q

2 parts of Aqueducts

A

Cochlear Aqueduct

Vestibular Aqueduct

57
Q
  • Bony canal that passes to posterior fossa dura
  • Opens lateral to IAM
  • transmits endolymphatic duct and 2 blood vessels into blind sac (reservoir for excess endolymph)
A

Vestibular aqueduct

58
Q

Common crus of vestibular aqueduct

A

union of superior and posterior SC duct

59
Q

Neurovascular Space

A

Facial nerve canal, Carotid Canal, Jugular Fossa

60
Q
  • taste fibers to anterior 2/3 tongue
  • preganglionic parasympathetic to submandibular and sublingual glands
  • Courses between incus and handle of melees
A

Chorda tympani

Anatomy Module 9 (1 decks)

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