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Anatomy > Axial Skeleton > Flashcards

Axial Skeleton Flashcards

1
Q

What’s in axial Skeleton

A

Skull, vertebral column, thorax

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2
Q

Function of axial skeleton

A

Protects the CNS and vital organs

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3
Q

How many bones are in the skull

A

29

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4
Q

Skull is divided into…

A

Cranial and facial bones

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5
Q

Mandible

A

Lower jaw, holds lower teeth

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6
Q

Posterior part of temporal bone has a bump

A

Mastoid process

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7
Q

Condyle of mandible joins the temporal bone to form

A

TMJ

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8
Q

Elevation or bump on occipital bone

A

External occipital protuberance

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9
Q

Roof of orbit

A

Frontal bone

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10
Q

Holds the pituitary gland

A

Sella Turcica

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11
Q

Centrally located, keystone of skull

A

Sphenoid bone

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12
Q

Located between orbital cavities

A

Ethmoid bone

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13
Q

Perpendicular plate in the ethmoid bone forms the

A

Bony part of nasal septum

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14
Q

Projects into floor of cranium anterior lay

A

Crista Galli

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15
Q

Depressions in floor of cranium on which the brain rests

A

Cranial fossae

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16
Q

Three types of cranial fossae

A

Anterior, middle, and posterior

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17
Q

Outgrowths of the nasal cavity into the maxillary, ethmoid, frontal, and Sphenoid bones

A

Paranasal sinuses

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18
Q

What reduces weight of the face

A

Paranasal sinuses

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19
Q

Order of paranasal sinuses

A

Frontal
Ethmoid
Sphenoid
Maxillary

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20
Q

Bones of orbit….

A

Roof (frontal bone)
Floor (axillary bone)
Medial and lateral wall (ethmoid, zygomatic)

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21
Q

In the fetal skull, cranial bones are…

A

Joined by CT

Slide over one another in childbirth

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22
Q

Large areas of connective tissue where some bones intersect

A

Fontanelles

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23
Q

U-shaped bone, in the upper neck

A

Hyoid bone

24
Q

Attachment sites for tounge and neck

A

Cornus/ horns

25
Q

Functions of the vertebral column

A

Structural support
Posture
Protects spinal cord

26
Q

How many individual vertebrae are there

A

24

27
Q

How many cervical, thoracic, lumbar, and sacrum bones

A

Cervical : 7
Thoracic: 12
Lumbar: 5
Sacrum: 5

28
Q

Exaggerated thoracic curve (old people)

A

Kyphosis

29
Q

Exaggerated lumbar curve (pregnant)

A

Lordosis

30
Q

Abnormal curve in the coronal plane

A

Scoliosis

31
Q

What houses the spinal cord

A

Vertebral canal

32
Q

Features of vertebrate

A

Large disc like body located anteriorly

33
Q

Between each body is an…

A

Intervertebral disc

34
Q

Located between bodies of adjacent vertebrae

A

Invertebral discs

35
Q

Flexion

A

Forward bending, stretches posterior disc

36
Q

Extension

A

Backward bending, stretches anterior disc

37
Q

Features of invertbral discs

A

Account for 1/4 th of entire vertebral column

Act as shock absorbers and provide flexibility

38
Q

First cervical vertebrae?

A

Atlas, ring of bone with no spinous process

39
Q

Second cervical vertebrae

A

Axis, has dens

40
Q

True or false

Significant amount of cervical rotation occurs between atlas and axis

A

True

41
Q

C7 name

A

Vertebra prominens

42
Q

Allow vertebral arteries to ascend from the lower neck upward to cranium to supply blood to brain

A

Transverse foramina

43
Q

Breast bone

A

Sternum

44
Q

How many ribs

A

12 pairs

45
Q

What is the sternum made up of

A

Xiphoid process, body, and manubrium

46
Q

What ribs are true, false, and floating

A

True: 1-7
False: 8-12
11 and 12 are floating

47
Q

Each rib has a

A

Head, neck, and tubercle

48
Q

Movement of ribs

A

Elevation and depression

49
Q

Have long spinous processes that are angled inferiority

A

Thoracic vertebrae

50
Q

What articulates with the ribs

A

Thoracic vertebrae

51
Q

Largest vertebrae

A

Lumbar

52
Q

What bears most of the body weight

A

Lumbar

53
Q

Triangular bone composed of 5 fused vertebrae

A

Sacrum

54
Q

4 small fused vertebrae, tail bone

A

Coccyx

55
Q

5 movements of the spine

A

Flexion, extension, abduction, addiction, rotation

Anatomy (25 decks)

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