Bones Flashcards
Block 1 (29 cards)
Functions of bones (6)
- Support weight of body
- Protect organs
- Act as levers for movement
- Storage of minerals
- Storage of fat
- Blood cell formation
What minerals do bones store
Ca2+, P+
Where is fat stored in bones
In marrow
Where is blood cells formed
In marrow
Properties of bones
Living dynamic tissue
Required a lot of blood supply
Bone cells osteoblasts and osteoclasts
Osteoblast
Make bone
Osteoclast
Break bone
Bone classifications
- Long
- Short
- Seasamoid
- Flat
- Irregular
Long bones are
Cylindrical with enlarged extremities
Short bones are
No dimension greatly exceeds the others, function to diffuse concussion
Sesamoid bones
Protect tendons at joint (places with greater friction)
Flat bones
Board surface for extensive muscle attachment and protection to underlying tissues
Irregular bones
Bones that don’t fit in other classifications
Parts of long bones
Physis, epiphysis, metaphysis, diaphysis
Physis
epiphyseal plate or growth plate, proximal and distal Physes
Epiphysis
End regions of bone
Metaphysis
Located next to physis on diaphyseal side, region of bone growth in length, weak point
Diaphysis
Shaft of bone, contains yellow marrow, reduced weight of bone
Seasomoid bones are
Located near freely moving joint, have articulated surface, function is to decrease friction of tendons
Articular
Jointy
Non-articular
Non-jointy
Bones mold in
Response to stress
Prominences occur where
Bone is mechanically loaded
Bumps, tubercle, tuberosity, tuber, process
Small eminences, nodules, projects, elevation, often tendon attachments
