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ANATOMY 5 > Chapter 9: The Skull > Flashcards

Chapter 9: The Skull Flashcards

1
Q

It houses the organs of special senses for hearing, smelling & sight. It also encloses the brain. Consists of the neurocranium and facial bones.

A

Skull

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2
Q

_________ - is a box-like structure in the superior part of the skull.

A

calvaria (cranial vault)

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3
Q

What are the 8 cranial bones?

A

a. Frontal
b. Occipital
c. Parietal (2)
d. Sphenoid
e. Temporal (2)
f. Ethmoid

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4
Q

The following are the Facial bones. Which of the following is not included?

a. Nasal (2)
b. Palatine (2)
c. Maxillae (2)
d. Inferior nasal concha (2)
e. Zygomatic (2)
f. Ethmoid
g. Mandible
h. Lacrimal (2)

A

not included: f

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5
Q

How many are the Facial bones?

A

14 Facial bones

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6
Q

This part of the skull is comprised of the anterior part of the calvaria and skeleton of face.

A

Anterior aspect of skull

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7
Q

What are the divisions that features the skeleton of face?

A
  1. frontal and zygomatic bones
  2. orbits
  3. nasal region
  4. maxillae and mandible
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8
Q

This bone forms the skeleton of the forehead. It articulates with the lacrimal, ethmoid, sphenoid, nasal and zygomatic bones.

A

Frontal bone (skull bone)

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9
Q

What are the landmarks on the frontal bone?

A
  1. Glabella
  2. Supra-orbital margin
  3. Superciliary arch
  4. Supra-orbital (notch) foramen
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10
Q

___________ - Located between the superciliary arches, the glabella is a smooth slightly depressed area.

A

Glabella

(between eyebrows)

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11
Q

____________ - Frontal bone thickens then extends posterior, to form roofs of the orbits.

A

Supra-orbital margin

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12
Q

__________ - Is superior and parallel to the margin and overlies the frontal sinus.

A

Superciliary arch

(where eyebrows are positioned)

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13
Q

___________ - Passage of supraorbital nerve and vessels.

A

Supra-orbital (notch) foramen

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14
Q

These bones form the prominence of the cheeks and lie on the inferolateral sides of the orbits and rest on the maxilla. The anteriolateral rims, walls, these bones form floor and much of the infra-orbital margin of the orbits.

A

Zygomatic Bones

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15
Q

What are the articulations of Zygomatic Bones?

A
  1. frontal bone
  2. maxilla bone
  3. sphenoid bone
  4. temporal bone
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16
Q

The ____________ of the zygomatic bone unites with the ___________ of the temporal bone to form the zygomatic arch.

A

temporal process

zygomatic process

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17
Q

These bones are easy to palpate and form the bridge of the nose. These bones articulate with frontal, maxillae and ethmoid bones.

A

Nasal Bones

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18
Q

What are the landmarks on the nasal bones?

A
  1. Middle nasal conchae
  2. Bony nasal septum
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19
Q

__________ - can be observed through the nasal cavity, dividing the nasal cavity into right and left parts.

A

Bony nasal septum

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20
Q

____________ - is formed by the vomer bone inferiorly and the perpendicular plate of the ethmoid bone superiorly.

A

bony nasal septum

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21
Q

_____________ - curved bony plates located on the lateral wall of the nasal cavity .

A

Middle nasal conchae

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22
Q

The two maxillae are united by the _____________ to form the maxilla or the upper jaw.

A

intermaxillary suture

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23
Q

What are the landmarks on the maxillae?

A
  1. maxillary sinus
  2. alveolar processes
  3. anterior nasal aperture
  4. Infra-orbital foramen
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24
Q

The maxillae contain _____________ , which include sockets, and is the supporting bone for the maxillary teeth.

A

alveolar processes

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25
Q

The maxillae surrounds most of the anterior nasal aperture and forms the ____________ medially.

A

infra-orbital margins

26
Q

___________ - located inferior to each orbit for the infraorbital nerve and vessels.

A

Infra-orbital foramen

27
Q

Also known as the lower jaw and is the largest and strongest bone of the face. This bone is U-shaped with alveolar processes that house the mandibular teeth.

A

Mandible

28
Q

The mandible consists of the horizontal part called _____ and a vertical part called _____ .

A

body

rami

29
Q

The superior part of each ramus has two processes. The posterior is called _______ and a sharp anterior process called __________. In between these two structures is a dip called ___________ .

A

condylar process

coronoid process

mandibular notch

30
Q

On the anterior part of the body there is a ____________ . Lateral to this protuberance there are the _________ which transmit the mandibular division of the Trigeminal nerve.

A

mental protuberance

mental foramen

31
Q

___________ - forms the posterior third of hard palate. These horizontal plates separate the nasal and oral cavities.

A

Palatine Bones

32
Q

What is the main cranial bone on the lateral aspect of the skull?

A

temporal bone

33
Q

__________ - is a clinical landmark where 4 bones articulate: frontal, parietal, temporal and sphenoid (H shape). It is located in the temporal fossa.

A

Pterion

34
Q

Form most of the lateral sides of the skull and part of base.

A

Temporal Bones

35
Q

__________ - unites with temporal process of zygomatic bone to form zygomatic arch (cheek bone) .

A

Zygomatic process

36
Q

__________ - projects anterior/inferiorly of temporal bones. It is part of attachment for sternocleidomastoid muscle.

A

mastoid process

37
Q

Anteromedial to the mastoid process is the slender ____________ .

A

styloid process

38
Q

___________ - is an air chamber in the temporal bone containing the small ear bones - The malleus, the incus and the stapes.

A

tympanic cavity

39
Q

This part of the skull is formed by the posterior parts of the parietal bones, the occipital bone and the mastoid processes of the temporal bone.

A

Posterior aspect of the skull

40
Q

This bone forms most of the posterior part of the skull and most of the base.

A

Occipital Bone

41
Q

___________ - large opening on the inferior aspect of the occipital bone, where the spinal cord

A

Foramen magnum

42
Q

___________ - one on either side of the foramen magnum. They articulate with C1

A

Occipital condyles

43
Q

________________ - prominent bump on posterior aspect of skull to foramen magnum.

A

External occipital protuberance (inion)

44
Q

____________ - run laterally from the External occipital protuberance to the mastoid processes of the temporal bones.

A

Superior nuchal lines

45
Q

___________ - run parallel to the superior nuchal lines but on the underside of the skull.

A

Inferior nuchal lines

46
Q

__________ - found in the center of the occiput that indicates the junction of the sagittal and lambdoid sutures.

A

Lambda

47
Q

This part of the skull is composed of the frontal bone anteriorly, the right and left parietal bones laterally and the occiput posteriorly.

A

Superior part of the skull

48
Q

What are the two curved lines that crossed over to middle and lateral surfaces of the parietals?

A

superior and inferior temporal lines

49
Q

________ - suture separates the frontal and parietal bones.

A

coronal

50
Q

________ - suture separates the parietal bones.

A

sagittal

51
Q

__________ - suture separates the occipital bone from the parietal and temporal bones.

A

lambdoid

52
Q

________ - is the landmark formed by the intersection of the sagittal and coronal sutures.

A

bregma

53
Q

What is the most superior part of the skull?

A

The vertex

54
Q

________ - is irregular because of many foramen processes & articulations. It has the temporal bone with mastoid and styloid processes.

A

cranial base

55
Q

_____________ - is the most obvious and is bordered anterolaterally by occipital condyles which articulate with the atlas (C1).

A

foramen magnum

56
Q

This bone is located anterior to temporal bones, often described as looking like a bat. It has three main parts - the body, the greater and lesser wings.

A

Sphenoid Bone

57
Q

The superior part is shaped like a Turkish saddle (sella turcica). It forms the hypophyseal fossa, which contains the pituitary gland.

A

Sphenoid Bone

58
Q

This bone is located in the anterior part of cranial floor between the orbits. It is anterior to the sphenoid and posterior to the nasal bones. It is also a major supporter of the nasal cavity.

A

Ethmoid Bone

59
Q

Ethmoid bone contains the ___________ . It also contains the __________ which the olfactory nerves pass through.

A

ethmoid sinuses

cribriform plates

60
Q

__________ - is known as a sesamoid bone and is found in the anterior neck region. It is a unique U-shaped bone that is suspended from the styloid processes of the temporal bones by ligaments and muscles. It contains a horizontal body and paired projections, called the lesser and greater horns.

A

Hyoid bone

ANATOMY 5 (12 decks)

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