Bony Landmarks Head & Neck Flashcards

1
Q

Identify Mental Foramen

A

Hole in anterior/semi-lateral mandible

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2
Q

What passes through the Mental Foramen?

A

Mental n (CN-V3), a & v

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3
Q

Identify the Digastric Fossa

A

Inferior Boarder (small) of medial mandible

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4
Q

What attaches to the Digastric Fossa?

A

Anterior Belly of Digastric Muscle

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5
Q

Identify Alveolar Part of Mandible

A

Houses Roots of Teeth

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6
Q

Identify mylohyoid line & groove

A

Line = middle posterior mandible
Groove = more posterior, angled groove

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7
Q

What is held in the mylohyoid line & groove

A

Line = mylohyoid muscle
Groove = Mylohyoid nerve & artery

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8
Q

Identify Submandibular fossa.

A

Internal inferior shallow depressions, under mylohyoid line

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9
Q

Identify Mandibular Ramus

A

Posterior, vertical, quadrilateral parts of the mandible.

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10
Q

What attaches to the angle of the Mandibular ramus?

A

Masseter (external) & Medial Pterygoid muscles (internal)

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11
Q

Identify the Mandibular Foramen & Canal

A

Hole on inside of mandible, above mylohyoid line, on internal ramus of mandible.
Canal is in the bone of mandible.

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12
Q

What is in the Mandibular foramen and canal?

A

Inferior Alveolar n (CN-V3… turns into Mental n. After mental foramen), a & v

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13
Q

Identify Inferior Genial Tubercle & What Attaches?

A

Internal Medial Mandible, above Digastric fossa, below mylohyoid line.

Geniohyoid m.

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14
Q

Identify Coronoid Process.

What Attaches?

A

Sharp Bony Angle anterior to Mandibular Notch & Condylar Process

Temporalis m.

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15
Q

Identify the Mandibular Notch.

What is transmitted through?

A

U-shape between coronoid process and condylar process.

Nerve (CN-V3) and artery to masseter m. (Muscle of mastication)

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16
Q

Identify the Condylar Process.
Differentiate between Head of mandible, neck of mandible, pterygoid fovea.
What attaches at the pterygoid fovea?

A

Posterior, Superior Angle.
Head = Wide, Neck = Narrow, Fovea = Area between Condylar Notches on Anterior Side.

Attachment - Lateral Pterygoid

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17
Q

What attaches to the Hyoid Bone?

A

Supra:
Geniohyoid
Mylohyoid
Stylohyoid

Infra:
Omohyoid
Sternohyoid
Thyrohyoid (Greater Horns)

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18
Q

Identify the Squama, Basilar and Lateral parts of the Occipital Bone.

A

Squama - Big back bowl
Lateral - lateral part from foramen magnum
Basilar - Anterior part from foramen magnum

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19
Q

Identify & Describe What is Attached at:
1- External Occipital Protuberance
2- Superior Nuchal Line
3-Inferior Nuchal Line

A

1- Ligamentum Nuchae
2- Trapezius, SCM, Splenius Capitus
3- Rectus Capitus Posterior Major & Minor

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20
Q

Identify & Describe what attaches/is found at these sites:
1- Internal Occipital Protuberance
2- Superior Sagittal Sulcus
3- Sulcus for Transverse Sinus

A

1- Falx Cerebelli
2- Superior Sagittal Sinus
3- Transverse Sinus

21
Q

Identify Foramen Magnum & Identify what moves through.

A

Spinal Cord, Vertebral a & v, Accessory Nerve

22
Q

What articulates with the atlas on the skull? Identify it.

A

Occipital condyles

23
Q

Identify Hypoglossal Canal.

What Moves Through?

A

Anteriorly located, tubular passage, lateral occipital bone, between occipital condyle and jugular foramen.

CN-XII (Hypoglossal)

24
Q

Identify Jugular Notch.

What runs through?

A

Jelly bean shape shared between occipital and temporal bones.

Jugular Vein, CN-IX (Glossopharyngeal), CN-X (Vagus), CN-XI (Accessory)

25
Q

Identify Sphenoid Bone

A

Behind Frontal Bone, posterior orbital socket

26
Q

Identify and Describe what Is located in:
- Sulcus Chiasmaticus
- Optic Canal

A
  • Anterior most line in saddle (Optic Chiasm)
  • Posterior/Medial Hole in Orbit, lateral edges of Sulcus Chiasmaticus (Optic n. & Ophthalmic a.)
27
Q

Where is sella turcica?
Where do you find the pituitary gland? Tentorium Cerebelli?

A

Saddle of Sphenoid

Hypophyseal fossa (Pituitary)
Anterior & Posterior Clinoid Processes (Tentorium Cerebelli … dura matter)

28
Q

Identify Greater vs. Lesser wings of sphenoid.

A

Greater = Anterior and lateral face
Lesser = anterior ridge

29
Q

Identify & Describe Functions:
1- Foramen Rotundum
2- Foramen Ovale
3- Foramen Spinosum

A

1- Hole inferior to S.O.F. (Maxillary n.)
2- Larger hole at posterior boarder of sphenoid bone (Mandibular n. & accessory meningeal a.)
3- tiny hole lateral to Foramen Ovale (Middle Meningeal a. & Meningeal branch of Mandibular n.)

30
Q

What attaches to the lateral surface of the sphenoid bone?

A

Lateral Pterygoid & Temporalis

31
Q

Identify Superior Orbital Fissure.

What structures go through?

A

CN-III (Oculomotor)
CN-IV (trochlear)
CN-V1 (ophthalmic)
CN-VI (Abducens)

Ophthalmic Vein

32
Q

What are the borders of the inferior orbital fissure?
Locate it.
What passes through?

A

-Sphenoid & Maxilla Bones
-CN-V2 (maxillary), Infraorbital vessels, postganglionic fibers from pterygopalatine ganglion

33
Q

Pterygoid:
-Fossa
-Lateral Plate

A

-Posterior groove on… (medial pterygoid)
-lateral surface of… (lateral & medial ptyerygiod)

…inferior “handles”

34
Q

Identify Temporal Bone

A

Lateral Bone superior to ear, with arch

35
Q

Identify & Describe Structures :
1- Temporal Surface
2- Zygomatic Process
3- Mandibular Fossa

A

1- Temporalis
2- Masseter
3- Articulates with TMJ Disc

36
Q

Four Parts of Temporal Bone:
1- Squamous
2- Mastoid
3- Petrous
4- Tympanic

A

1- Squamous - Large Lateral Outside + Zygomatic
2- Mastoid - Inferior Outside
3- Petrous - Internal Edge/Corner
4- Tympanic - Under External Meatus, Above Styloid Process

37
Q

Mastoid Process - Identify & Describe structures attached

A

Inferior notch behind zygomatic process/external meatus

SCM, Splenius Capitis, Longissimus Capitis m.

38
Q

Identify & Describe Structures:
- Trigeminal Impression
-Carotid Canal

A
  • Anterior Aspect of Ridge/Edge of Temporal Bone
  • Vertical Hole at Base of Sellar Bone
39
Q

Identify & Describe Structures:
-Internal Auditory Meatus
-Jugular Foramen

A

-Posterior Wall of Ridge, Circular Hole (CN-VII Facial, CN-VIII Vestibulocochlear)
-Inferior to I.A.M., jellybean shaped hole (Internal Jugular Vein, CN-IX Glossopharyngeal, CN-X Vagus, CN-XI Accessory)

40
Q

Identify & Describe Structures:
-Styloid Process
-Stylomastoid Foramen

A
  • Sharp pointy protuberance (Stylohyoid, Stylopharyngeus, Styloglossus m.)
  • Hold Directly Posterior To (CN-VII Facial)
41
Q

Parietal Bone - Identify two structures (one external, one internal)

A

External = Superior Temporal Line (Temporalis m. Attachment)
Internal = Groove for Superior Sagittal Sinus

42
Q

Frontal Bone - Identify and Describe Structure in Each Location
1- External / Supraorbital Notch/Foramen
2- Internal / Groove for Superior Sagittal Sinus
3- Orbital / Fossa for Lacrimal Gland

A

1- notch above eye, Supraorbital n., a. & v.
2- crest
3- Internal, Anterior Superior Lateral orbit socket wall

43
Q

Cribriform Plate
Crystal Galli

A
  • Spongy looking at anterior floor of skull cavity
  • Protuberance between Cribriform Plate (Falx Cerebri attaches)
44
Q

Identify Lacrimal Bone

A

Medial Anterior Border of Orbital

45
Q

Where is the Maxilla Bone?

A

Left & Right side of nose, moving inward behind nose

46
Q

Identify Infraorbital Foramen. Describe contents.

A

Hole under eye.
Infraorbital n., a. & v.

47
Q

Identify the Infraorbital Groove/Canal. What goes through?

A

Infraorbital n., a. & v.

48
Q

Identify Palatine Bones.
Horizontal / Perpendicular Plate.
Greater & Lesser Palatine Canal/Foramen.

A

Posterior portion of nasal cavity.
Horizontal = floor, Perpendicular = Wall.
Inferior Floor: Greater = larger hole, Lesser = smaller hole.

49
Q

Zygomatic Bone:
-Lateral Surface (What attaches here?)
-Temporal Surface
-Orbital Surface

A

Cheek Bone
-Face (Zygomaticus Major, Masseter Muscles)
-Connecting with Zygomatic Arch
-Region bordering eye socket