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Anatomy > Axial Skeleton - Chapter 7 > Flashcards

Axial Skeleton - Chapter 7 Flashcards

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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
What is the function of the lacrimal groove?
it is a passageway for the nasolacrimal duct
26
The inferior nasal cavity serves what function?
act to create turbulence in inhaled air
27
The Palatine Bone is
the L shaped bone
28
The horizontal plate articulates with
the palatine process of the maxilla
29
the orbital process of perpendicular plate forms part of what?
medial floor of orbit
30
The Maxilla forms what?
the upper jaw
31
The Vomer forms what?
lower half of nasal septum; is a triangular shape
32
the mandible involves the
body and ramus
33
The mental protuberance forms the
chin
34
The Nasal Complex is comprised of the...
bones and cartilage forming the nasal cavities and sinuses around them
35
How many bones are part of the Nasal Complex?
7 bones
36
What are the paranasal sinuses?
air-filled spaces in skull bones around nasal cavity
37
The function of mucus in paranasal sinuses
humidifies and warms inhaled air
38
4 major types of paranasal sinuses
Frontal, Ethmoid, Sphenoid, and maxillary
39
The orbits are
bone cavities in skull that hold and protect eye
40
Auditory ossicles function?
the 3 tiny bones in each temporal for hearing
41
What are the Auditory Ossicles
Malleus, incus, stapes
42
Fontanelles are?
flexible areas of dense regular connective tissue that connect infant cranial bones together
43
2 major fontanelles
Anterior fontanelle and posterior fontanelle
44
Anterior fontanelle ossifies at how many months?
ossifies at ~15 months
45
Posterior fontanelle ossifies at how many months?
ossifies at ~9 months
46
The spinal cord consist of what?
all vertebral foramen together
47
The intervertebral foramen consist of
2 vertebral notches together
48
Vertebral bodies are interconnected by what?
ligaments
49
Annulus fibrosis is the
outer fibrocartilaginous ring
50
Nucleus pulposus is the
inner circular region of intervertebral disc
51
Function of Nucleus pulposus?
absorbs vertical shock and permits various movements of the vertebral column
52
cervical vertebrae are
smaller bodies with larger spinal canal
53
thoracic vertebrae are
larger and stronger bodies
54
lumbar vertebrae are
shortest and largest bodies
55
Atlas (C1)
lacks body
56
The Atlas makes what type of movement?
nodding movement
57
How is nodding movement at atlanto-occipital joint signifies...
"yes" - head nod (up and down)
58
Axis (C2)
has dens attached
59
The Axis makes what type of movement?
pivotal movement
60
How is the pivotal movement at atlanto-occipital joint signifies...
"no" - head shake (side to side)
61
The Axis acts as
axis of rotation between the atlas and the skull
62
When does the sacrum fuse?
the third decade of life
63
What does the sacrum serve as?
foundation for pelvic girdle
64
Where does the spinal canal end?
sacral hiatus
65
The Sacrum was originally how many vertebrae?
5
66
When does the Coccyx fuse?
the third decade of life
67
The Coccyx was originally how many vertebrae?
4
68
The sternum is also known as
the "breastbone"
69
The sternum is originally comprised of how many vertebrae?
3
70
At what age does the sternum fuse?
approximately 40 years of age
71
That Xiphoid process ossifies by what age?
40 years old
72
How many pairs of ribs are there?
12 pairs
73
True ribs are which rib pair numbers
1 - 7
74
Where do true ribs anchor to
directly to sternum
75
False ribs are which rib pair numbers
8 - 12
76
False ribs
do not articulate directly with sternum via their coastal cartilages
77
Floating ribs are which rib pair numbers
11 and 12

Anatomy (15 decks)

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