Study Skeletal System A Flash Cards

 
Pile Management Card
Skeletal System A

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Metaphyseal Vessels
enter at metaphyses
supply inner surface of epiphysis
Periosteal Vessels
small vessels
supply superficial osteons of diaphysis
Nutrient artery and vein
enters medullary cavity through diphases
nutrient foramen
proximal and distal branches
supply central (haversian) canal
Bone Blood Supply
Nutrient artery and vein
Periosteal vessels
Meaphyseal vessels
Attachment
Attach tendons, ligaments, joint structures
Fibers interwoven with periosteum and osseous tissue
STRONG bone tissue connection
Associated CT
Periosteum covers outer surface of bone
Endosteum covers inner surface of bone and contains osteoprogenitor cells, osteoblasts, and osteoclasts

Function: secures blood vessels and nerves; growth & repair; attaches surrounding CT
Metaphysis
"union"
Adults- spongy
Juveniles- hyaline cartilage (allow for growing)

Function: site of bone growth

Found: area where epiphysis and diaphysis come together
Diaphysis
AKA shaft of bone
long, slightly curved region
Mostly compact
Yellow marrow in meduallary cavity
Areolar and adipose tissue

Function: support for blood vessel and energy storage

Found: between ends
Epiphysis
AKA head of bone
Mostly spongy (thin covering of compact)
Filled with red bone marrow & blood stem cells

Function: strength and lightness

Found: ends of long bones
Long Bone Structure
Epiphyses
Diaphysis aka shaft (medullary cavity)
Metaphysis
Cortex
Bone Classification
Long bones
Flat bones
Sutural bones (not everyone has these)
Irregular bones
Short bones
Sesamoid bones (not everyone has all of these)
Characteristics of Spongy Bone
Fills ends of long bones
Resists stress in multiple directions
Trebeculae brace bones from within
Align along stress lines
"Lightens the load"
Characteristics of Compact Bone
Thickness based on physical stress
Contours shaped by external physical forces
Found on surface of ALL bones
Periosteum absent in joint
Articular cartilage (hyaline)
Osteon (parallel to long axis of shaft, and to longitudinal force)
Bones Types
Compact
Spongy
2 Divisions of Skeletal System
Axial skeleton
Appendicular skeleton
5 Functions of Skeletal System
Support weight
Mineral storage
Blood cell production
Protection
Leverage- movement
Skeletal System
AKA osseous tissue
~206 bones
Dynamic
Solid matrix (hydroxyapatite)
Connective Supportive Tissue
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