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Anatomy > Axial Skeleton - Chapter 7 > Flashcards

Axial Skeleton - Chapter 7 Flashcards

1
Q

The axial skeleton consists of?

A

skull, skull and associated bones, vertebral column, and thoracic cage

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2
Q

Parietal bones are an attachment site for?

A

temporalis muscle

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3
Q

The parietal eminence is

A

rounded prominence on each side of skull

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4
Q

3 parts of temporal bone

A

petrous, squamous, and tympanic

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5
Q

Temporal bones make up

A

inferior lateral wall and part of cranium floor

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6
Q

mastoid process is attachment site for

A

some neck muscles

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7
Q

styloid process is attachment site for

A

typhoid and tongue muscles

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8
Q

What is the job of the temporomandibular joint

A

attach the lower jaw to the rest of skull

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9
Q

The occipital bone is located

A

posterior region and portion of base of the cranium

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10
Q

The sphenoid bone is also known as?

A

The bridging bone

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11
Q

The sphenoid bone’s (bridging bone) job is to

A

unite facial and cranial bones, articulations with most bones of skull bone

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12
Q

The Ethmoid bone is located

A

at the roof of the nasal cavity, part of the nasal septum

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13
Q

Crista Galli is the attachment for

A

falx cerebri (covering of brain)

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14
Q

Cribriform plate is the

A

passageway for olfactory nerves

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15
Q

The Ethmoidal labyrinths contain

A

the ethmoid sinuses

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16
Q

The coronal suture is located where?

A

between front and parietal skull bones

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17
Q

The lambdoidal suture is located where?

A

between the occipital and parietal bones

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18
Q

The sagittal suture is located where?

A

between the parietals

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19
Q

The squamous suture is located where?

A

between the temporal and parietal

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20
Q

What is a fossa?

A

depression in a bone(s)

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21
Q

How many facial bones are there?

A

14 ( pairs of each except the maxillae, vomer, and mandible)

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22
Q

The Zygomatic Bone is also known as the?

A

cheek bone

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23
Q

the zygomatic bone is located where?

A

the lateral wall of orbit and cheek

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24
Q

The lacrimal bone is located where?

A

the medial wall of the orbit

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25
Q

What is the function of the lacrimal groove?

A

it is a passageway for the nasolacrimal duct

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26
Q

The inferior nasal cavity serves what function?

A

act to create turbulence in inhaled air

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27
Q

The Palatine Bone is

A

the L shaped bone

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28
Q

The horizontal plate articulates with

A

the palatine process of the maxilla

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29
Q

the orbital process of perpendicular plate forms part of what?

A

medial floor of orbit

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30
Q

The Maxilla forms what?

A

the upper jaw

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31
Q

The Vomer forms what?

A

lower half of nasal septum; is a triangular shape

32
Q

the mandible involves the

A

body and ramus

33
Q

The mental protuberance forms the

A

chin

34
Q

The Nasal Complex is comprised of the…

A

bones and cartilage forming the nasal cavities and sinuses around them

35
Q

How many bones are part of the Nasal Complex?

A

7 bones

36
Q

What are the paranasal sinuses?

A

air-filled spaces in skull bones around nasal cavity

37
Q

The function of mucus in paranasal sinuses

A

humidifies and warms inhaled air

38
Q

4 major types of paranasal sinuses

A

Frontal, Ethmoid, Sphenoid, and maxillary

39
Q

The orbits are

A

bone cavities in skull that hold and protect eye

40
Q

Auditory ossicles function?

A

the 3 tiny bones in each temporal for hearing

41
Q

What are the Auditory Ossicles

A

Malleus, incus, stapes

42
Q

Fontanelles are?

A

flexible areas of dense regular connective tissue that connect infant cranial bones together

43
Q

2 major fontanelles

A

Anterior fontanelle and posterior fontanelle

44
Q

Anterior fontanelle ossifies at how many months?

A

ossifies at ~15 months

45
Q

Posterior fontanelle ossifies at how many months?

A

ossifies at ~9 months

46
Q

The spinal cord consist of what?

A

all vertebral foramen together

47
Q

The intervertebral foramen consist of

A

2 vertebral notches together

48
Q

Vertebral bodies are interconnected by what?

A

ligaments

49
Q

Annulus fibrosis is the

A

outer fibrocartilaginous ring

50
Q

Nucleus pulposus is the

A

inner circular region of intervertebral disc

51
Q

Function of Nucleus pulposus?

A

absorbs vertical shock and permits various movements of the vertebral column

52
Q

cervical vertebrae are

A

smaller bodies with larger spinal canal

53
Q

thoracic vertebrae are

A

larger and stronger bodies

54
Q

lumbar vertebrae are

A

shortest and largest bodies

55
Q

Atlas (C1)

A

lacks body

56
Q

The Atlas makes what type of movement?

A

nodding movement

57
Q

How is nodding movement at atlanto-occipital joint signifies…

A

“yes” - head nod (up and down)

58
Q

Axis (C2)

A

has dens attached

59
Q

The Axis makes what type of movement?

A

pivotal movement

60
Q

How is the pivotal movement at atlanto-occipital joint signifies…

A

“no” - head shake (side to side)

61
Q

The Axis acts as

A

axis of rotation between the atlas and the skull

62
Q

When does the sacrum fuse?

A

the third decade of life

63
Q

What does the sacrum serve as?

A

foundation for pelvic girdle

64
Q

Where does the spinal canal end?

A

sacral hiatus

65
Q

The Sacrum was originally how many vertebrae?

A

5

66
Q

When does the Coccyx fuse?

A

the third decade of life

67
Q

The Coccyx was originally how many vertebrae?

A

4

68
Q

The sternum is also known as

A

the “breastbone”

69
Q

The sternum is originally comprised of how many vertebrae?

A

3

70
Q

At what age does the sternum fuse?

A

approximately 40 years of age

71
Q

That Xiphoid process ossifies by what age?

A

40 years old

72
Q

How many pairs of ribs are there?

A

12 pairs

73
Q

True ribs are which rib pair numbers

A

1 - 7

74
Q

Where do true ribs anchor to

A

directly to sternum

75
Q

False ribs are which rib pair numbers

A

8 - 12

76
Q

False ribs

A

do not articulate directly with sternum via their coastal cartilages

77
Q

Floating ribs are which rib pair numbers

A

11 and 12

Anatomy (15 decks)

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