U4 Interim #1 (Axial Skeleton) Flashcards

1
Q

Illiac crest

A

ridgelike projection (e.g. illiac crest of hip)

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2
Q

Facet

A

small, nearly flat articular surface, limits bones from moving too far/overloading

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3
Q

Foramen

A

opening or hole

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4
Q

Meatus

A

tube like pathway (e.g. ear canal/external acoustic meatus)

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5
Q

Sinus

A

air filled cavity within bone

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6
Q

Spine

A

thornlike projection aka spinous process (bumps)

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7
Q

Condyle

A

a rounded process of the bone, forming an articulation with another bone (bone-meets-bone)

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8
Q

Fossa

A

shallow basin, receives articulating bones

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9
Q

Line

A

slightly raised ridge

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10
Q

Tuberosity

A

knoblike raised elevation, attachment of muscles or ligaments

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11
Q

Fovea

A

tiny pit or depression, attachment site

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12
Q

Head

A

rounded enlargement at the end of a bone

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13
Q

Trochanter

A

large process, attachment site

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14
Q

Tubercle

A

small knoblike process, attachment site

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15
Q

How many bones? Different divisions?

A

206 bones; axial and appendicular

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16
Q

Axial skeleton

A

head, skull, vertebral column, thoracic cage, sternum, hyoid bone

17
Q

Bones of the skull/cranial bones

A
  • Frontal
  • Parietal
  • Temporal
  • Occipital
  • Sphenoid bone (butterfly shaped, base of cranium behind the eye and below the front part of the brain)
  • Ethmoid bone (center of skull between the eyes, holes present)
  • Maxilla (upper jaw)
    -Mandible (lower jaw)
  • Zygomatic bone (cheekbone)
  • Vomer bone (forms nasal septum)
  • Lacrimal bone (forms eye socket, anterior to the ethmoid bone)
18
Q

Fontanels

A

soft spots on infant’s skull

19
Q

Coronal suture

A

Between frontal and parietal bone

20
Q

Lambdoidal suture

A

Between the parietal and occipital bone

21
Q

Squamosal suture

A

Between temporal and parietal bone

22
Q

Sagittal suture

A

Between parietal bones

23
Q

Supraorbital foramen

A

Hole above the eye

24
Q

Infraorbital foramen

A

Hole below the eye

25
Q

Mental foramen

A

Hole on the chin

26
Q

Foramen Magnum

A

Hole at the bottom of the skull (where spinal cord passes through)

27
Q

Vertebral Column

A

24 vertebrae total
1). Cervical (C1-C7)
2). Thoracic (T1-T12)
3). Lumbar ( L1-L5)
4). Sacrum
5). Coccyx (tailbone)

28
Q

Thoracic Cage

A

12 pairs of ribs total
- First 7 pairs are “true ribs”
- Next 3 pairs are “false ribs” (connects to coastal/ hyaline cartilage as opposed to sternum)
- Last 2 pairs are “floating” (not connected to sternum OR coastal cartilage)

29
Q

Zygomatic arch

A

bridge of bone extending from the temporal bone at the side of the head around to the maxilla (upper jawbone) in front and including the zygomatic (cheek) bone as a major portion

30
Q

Styloid process

A

bone protruding from the temporal bone, “pointy”

31
Q

Mastoid process

A

bone protruding from the temporal bone behind the ear where neck muscles are attached (facilitates the movement of the tongue, pharynx, larynx, hyoid bone, and mandible); behind the styloid process, “concave”

32
Q

Manubrium

A

upper broad segment of the sternum

33
Q

Body

A

Longest part of the sternum

34
Q

Xiphoid process

A

lower part of the sternum, can be damaged during CPR

35
Q

Sternal angle

A

marks the point at which the costal cartilages of the second rib articulate with the sternum (right below the manubrium)

36
Q

C-1

A

ATLAS

37
Q

C-2

A

AXIS

38
Q

Structure of vertebrae

A
  • Body
    -Spinous process/”bump”
  • Vertebral foramen (where spinal cord is)
  • Transverse process (sides of vertebrae)
  • Articular facets (superior/inferior parts of verebrae)
39
Q

Nasal bone

A

right between the eyes, above the maxilla on the center of the skull