axial skeleton Flashcards

1
Q

structures of bones include

A
  • articulations
  • landmarks
  • foramina
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2
Q

what type of structure indicate contacts with other bones?

A

articulation

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3
Q

what type of structure indicate areas of muscle and ligament attachment?

A

landmarks

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4
Q

what type of structure indicate openings for nerves and blood vessels?

A

foramina

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5
Q

Axial Skeleton

A

Forms the longitudinal axis of the body

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6
Q

how many bones does skull have?

A
  • 8 cranial bones
  • 14 facial bones
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7
Q

Bones associated with the skull

A
  • 6 auditory ossicles
  • The hyoid bone
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8
Q

bones in vertebral column

A
  • 24 vertebrae (singular = vertebra)
  • The sacrum
  • The coccyx
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9
Q

bones in thoracic cage

A
  • 24 ribs
  • The sternum
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10
Q

function of axial skeletion

A
  1. Attaches to muscles of head, neck, and trunk
  2. Performs respiratory movements
  3. Stabilizes parts of appendicular skeleton
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11
Q

what does the skull protect?

A
  • The brain
  • Entrances to respiratory system
  • Entrance to digestive system
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12
Q

function of facial bones

A

Protect and support entrances to digestive and respiratory tracts

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13
Q

Cranial Bones

A
  • Enclose the cranial cavity
  • Which contains the brain
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14
Q

Facial Bones

A

have 2 parts:
- superficial facial bones
- deep facial bones

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15
Q

superficial facial bones

A

muscle attachment

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16
Q

deep facial bones

A

Separate the oral and nasal cavities

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17
Q

which type of facial bone will form nasal septum?

A

deep facial bones

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18
Q

sinuses

A

Cavities that decrease the weight of the skull

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19
Q

which cavity lined with mucous membrane and protect entrance of respiratory system?

A

sinuses

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20
Q

sutures

A

The immovable joints of the skull

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21
Q

four major sutures

A
  1. Lambdoid suture
  2. Coronal suture
  3. Sagittal suture
  4. Squamous suture
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22
Q

lambdoid suture

A

separates the occipital from the parietal bone

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23
Q

which type of suture contain sutural bone?

A

lambdoid suture

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24
Q

sagittal suture

A
  • between parietal bones
  • from lambdoid suture to coronal suture
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25
Q

squamous suture

A

Form boundaries between temporal bones and
parietal bones

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26
Q

Coronal Suture

A

Attaches frontal bone to parietal bones

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27
Q

calvaria (skullcap)

A

Consists of occipital, parietal, and frontal bones

28
Q

types of cranial bones

A
  • Occipital bone
  • Parietal bones
  • Frontal bone
  • Temporal bones
  • Sphenoid
  • Ethmoid
29
Q

types of bone in occipital bone

A
  • foramen magnum
  • occipital condyles
30
Q

foramen magnum

A

connects cranial and spinal cavity

31
Q

Functions of the temporal bones

A
  1. Part of lateral walls of cranium and zygomatic
    arches
  2. Articulate with mandible
  3. Surround and protect inner ear
  4. Attach muscles of jaws and head
32
Q

Auditory Ossicles

A

Three tiny bones in tympanic cavity (middle ear)

33
Q

sound transfer from _________ ____________ to
__________ ______

A

tympanic membrane (eardrum) to
inner ear

34
Q

_________ _________support the lower teeth

A

Alveolar processes

35
Q

Mental protuberance

A

attaches facial muscles

36
Q

Marks of the mandible

A
  • body
  • alveolar processes
  • mental protuberance
37
Q

infant skull

A
  • grow rapidly
  • relatively large to body
38
Q

what kind of ossification does infant skull have?

A

intramembranous ossification

39
Q

does infant skull completed?

A

fusion is not complete at birth

40
Q

Fontanelles

A

areas of fibrous connective tissue (soft spots)

41
Q

which structure cover unfused sutures in the infant skull ?

A

fontanelles

42
Q

which structure allow skull to flex at birth?

A

fontanelles

43
Q

4 types of fontanelles

A
  • Anterior Fontanelle
  • Occipital Fontanelle*
  • Sphenoidal Fontanelles*
  • Mastoid Fontanelles*
44
Q

which types of fontanelles will disappear 1-2 months old?

A

*Occipital, sphenoidal, and mastoid

45
Q

Anterior fontenelle

A

Frontal, sagittal, and coronal sutures

46
Q

abnormalities of cranial growth

A
  • craniostenosis
  • deformational plagiocephaly
47
Q

Craniostenosis

A
  • Premature closure of fontanelle
  • Unusual distortions
48
Q

Deformational Plagiocephaly

A

Repeated pressure on the same area

49
Q

how many bones does vertebral column have?

A

total 26
- 24 vertebrae
- sacrum
- coccyx

50
Q

how many vertebrae does the neck have?

A

7 cervical vertebrae

51
Q

how many vertebrae does the upper back have?

A

12 thoracic vertebrae

52
Q

what does thoracic vertebrae associate with?

A

Each articulates with one or more pair of ribs

53
Q

how many vertebrae does the lower back have?

A

5 lumbar vertebrae

54
Q

which vertebrae associate with sacrum?

A

5th lumbar vertebra

55
Q

which structure articulate with coccyx?

A

sacrum

56
Q

4 spinal curves

A
  1. Cervical curve
  2. Thoracic curve
  3. Lumbar curve
  4. Sacral curve
57
Q

which vertebra region is the spinous process of vertebra prominens?

A

C7

58
Q

which cervical vertebrae has no spinous process?

A

C1 (atlas) -> yes

59
Q

C2 vertebra

A

axis -> no

60
Q

what does sacrum attach to?

A
  • The axial skeleton to pelvic girdle
  • Broad muscles that move the thigh
61
Q

what does adult sacrum consist of?

A

five fused sacral vertebrae

62
Q

which structure attaches ligaments and anal sphincter?

A

coccyx

63
Q

what does mature coccyx consist of?

A

three to five (typically 4) fused
coccygeal vertebrae

64
Q

what strucutre does thoracic cage support ?

A

thoracic cavity: thoracic vertebrae, ribs, sternum

65
Q

Pectoral Girdle consist of:

A
  • clavicles – (2)
  • Scapulae – (2)
66
Q

what type of bone does arm (branchium) have?

A

humerus

67
Q

which structure does humerus articulate with?

A

pectoral girdle