Skeletal System Flashcards

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1
Q

the entire framework of bones and cartilage

A

the skeletal system

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2
Q

Functions of Bones:

A
  • give body structure
  • site of tendon and ligament attachment (for movement)
  • protection of some internal organs
  • stores minerals (calcium and phosphate)
  • blood cell production (occurs in the red bone marrow of the epiphysis)
  • triclyceride storage (stored in medullary cavity)
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3
Q

Where does blood cell production occur?

A

in the red bone marrow of the epiphysis

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4
Q

where are triglycerides stored?

A

in the medullary cavity

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5
Q

What minerals do bones store?

A

Calcium and phosphate

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6
Q

Two parts of the long bone:

A
  • Diaphysis
  • Epiphysis
  • Articular Cartilage
  • Periostium
  • Medullary Cavity
  • Endosteum
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7
Q

the two swellings of either end of the long bone

A

Epiphysis

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8
Q

What kind of bone is in the epiphysis?

A

spongy bone

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9
Q

Connective tissue that lines the internal cavities of a bone

A

Endosteum

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10
Q

Within the diapysis

A

Medullary Cavity

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11
Q

connective tissue surrounding the exposed outside of bone

A

Periostium

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12
Q

Covers the end of the epiphysis

A

Articular Cartilage

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13
Q

Bone matrix consists of:

A
  • non-cellular substance
  • 25% fibrous protein
  • 25% water
  • 50% crystallized mineral salt
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14
Q

bone cells that build bone tissue

A

osteoblasts

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15
Q

bone cells that break down bone tissue

A

osteoclasts

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16
Q

mature bone cells

A

osteocytes

17
Q

Characteristics of compact bone:

A
  • Few spaces between hard components
  • Makes the external layer of all bones
  • Provides:
    a) structure
    b) site of attachments for tendons and ligaments
18
Q

Characteristic of spongy bone

A
  • does not contain true osteon
  • made up of lamellae that are arranged in a lattice of thin columns of bone
  • trabeculae are filled with red bone marrow
19
Q

Compact bone is arranged in _____

A

Haversian systems (osteon)

20
Q

Why are trabeculae arranged the way they are?

A

to resist stress from many directions and angles

21
Q

Axial Skeleton consists of:

A
  • Head
  • Neck
  • Trunk
22
Q

Appendicular Skeleton consists of:

A
  • upper limbs
  • lower limbs
  • pectoral girdle
  • pelvic girdle