Chapter 6 Flashcards

(82 cards)

1
Q

Osteology is

A

The study of bone and treatment of bone disorders

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2
Q

Osteo means

A

Bone

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3
Q

Ology means

A

Study of

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4
Q

The skeleton has ___ bones

A

206

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5
Q

The axial skeleton has ___ bones

A

80

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6
Q

The appendicular skeleton has ___ bones

A

126

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7
Q

The axial skeleton consists of

A

Bones of the skull, thorax, and vertebral column

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8
Q

The appendicular skeleton consists of

A

Bones of the limbs AND the girdles that attach them to the axial skeleton

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9
Q

What are the functions of the skeletal system

A

Support, store minerals and lipids, provide movement surfaces, protection, and leverage

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10
Q

What are the types of bones?

A

Flat bones(skull), sutural bones, long bones, irregular bones, sesamoid bones, and short bones

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11
Q

Flat bones are ___ and provide surface area for ___

A

Thin and flat; muscle attachment

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12
Q

Examples of flat bones

A

Skull bones, sternum, ribs, and scapulae

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13
Q

Sutural/wormian bones

A

Irregular bones formed between cranial bones

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14
Q

Long bones

A

Relatively long and slender

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15
Q

Long bone examples

A

Various bones in the appendages(limbs)

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16
Q

Irregular bones

A

Irregular shapes with short, flat, notched, or ribbed surfaces

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17
Q

Irregular bone examples

A

Vertebrae, facial bones, and pelvis bones

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18
Q

Sesamoid bones

A

Small, flat, and somewhat shaped like sesame seeds

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19
Q

Sesamoid bones develop within

A

Cartilage of hands, feet, and knees

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20
Q

Sesamoid bone example

A

Patella

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21
Q

Short bones

A

Small and boxy; as long as they are wide

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22
Q

Short bone examples

A

Tarsals and carpals

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23
Q

Depressions and opening allow

A

Passages of soft tissue(blood vessels, nerves, ligaments, and/or tendons) or the formation of joints

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24
Q

Canal/meatus are large passageways through ___

A

bone

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25
Sinus
Chambers within bone, usually filled with air
26
Foramen are small rounded passageways for ___ to go through
blood vessels/nerves
27
Fissures are elongated ___ or ___
cleft or gap
28
Sulcuses are
Deep narrow groove
29
Fossae are shallow ___ or ___ in bone surfaces
depression or recession
30
Epiphysis is the ___ of a bone that helps form ___
End; a joint
31
Metaphysis
Joins the head of the bone with the shaft
32
Diaphysis
The shaft of the bone
33
Facet is a ___,___ articulate surface
Small, flat
34
Trochanter is a large rough ___
projection
35
Red bone marrow
Produces red blood cells
36
Yellow bone marrow
Reserves energy
37
Periosteum is membrane on the bone that does what?
protect and nourish
38
Endosteum is a membrane that lines ___
inner bone; faces the medullary cavity
39
Compact bone
Strong and solid
40
Spongy bone is a
Branching framework and helps to resist forces
41
Periosteum contains
Blood vessels, sensory nerves, and lymphatic vessels
42
Unspecialized stem cells in bone are called
Osteogenic cells
43
What do osteogenic cells differentiate into?
Osteoblasts(builder cells)
44
What do osteoblasts make
Bone matrix(ossification)
45
How to osteoblasts become osteocytes?
They are surrounded by bony matrix
46
What do osteocytes do?
Maintain protein and Mineral content of surrounding matrix
47
Where are osteocytes found?
In lacunae
48
What are osteoclasts?
Large cells formed by the fusion of multiple monocytes in the Endosteum
49
What do osteoclasts do?
Release acids and proteolytic enzymes to dissolve the bone matrix and release stored minerals; remove and remodel bone matrix
50
The removal and remodeling of bone matrix is also called
Osteolysis
51
Unmineralized matrix is called
Osteoid
52
Bone matrix consists of
15% water, 30% collagen fibers, and 55% calcium phosphate
53
What is calcification?
The crystallization and hardening of bone tissue
54
The central canal of compact bone is also called
The Haversian canal
55
Where are osteocytes in compact bone?
Between lamellae in lacunae
56
What holds osteons together?
Canaliculi
57
Spongy bone is composed of
Thin plates of bone called trabeculae; contains no osteons
58
Where is red bone marrow found?
Between trabeculae
59
What happens in red bone marrow?
The making of red blood cells; hemopoiesis
60
Appositional bone growth causes bone to grow in
Diameter/thickness
61
Endochondral ossification
The formation of bone within hyaline cartilage
62
During puberty, hormones cause bones to grow and ___ to lessen
Epiphysial cartilage
63
Ossification begins in
The ossification center in tissue
64
Bone remodeling is the ongoing ___ of old ___ tissue
replacement of old bone tissue
65
Bone resorption is the ___ of minerals and collagen fibers by ___
The removal; osteoclasts
66
Bone deposition is the ___ of minerals and collagen fibers by ___
The addition; osteoblasts
67
Calcium
- Most abundant mineral in body - ~99% deposited in skeleton - helps with muscle contraction, blood coagulation, and nerve impulses
68
Intestines ___ calcium and phosphate
Absorb
69
Kidneys ___ calcium and phosphates
Dispose
70
What increases blood calcium levels?
Parathyroid hormone (PTH)
71
What decreases blood calcium levels?
Calcitonin
72
Steps of fracture repair
1. Fraction hematoma formation(blood clot) 2. Callus formation(inside bone and outside bone) 3. Spongy bone formation(replaces external callus) 4. Compact bone formation(replaces spongy bone)
73
What are the types of fractures?
Transverse, spiral, displaced, compression, greenstick, comminuted, epiphyseal, pott’s, and colles
74
Transverse fractures
Breaks along the long axis
75
Spiral fractures
Caused by twisting stress; spreads along the bone
76
Displaced fractures
Produce abnormal bone arrangements
77
Compression fractures
Occur in vertebrae; associated with osteoporosis
78
Greenstick fractures
One side broken, one side bent; generally occurs in children
79
Comminuted fractures
Shattering producing bone fragments
80
Epiphyseal fractures
Occurs where bone matrix calcifies; heals easily if clean break; stops growth is break goes through epiphyseal plate and cartilage
81
Pott’s fracture
Occurs in ankles; affects medial and lateral malleolus
82
Colles fracture
Break in distal radius