Chapter 6: Part 5
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Blood Ca is primarily controlled by __________ hormone.
When Blood Ca levels are lowered, parathyroid glands release _____.
PTH stimulates osteoclasts to degrade bone matrix and release ______.
Once Ca is released, Blood Ca levels ______.
Blood Ca may be affected to a lesser extent by ____________.
When Blood Ca levels are elevated, parafollicular cells of thyroid release __________.
Osteoblasts deposit _________ _________.
When Calcium salts are released, Blood Ca levels are then ________.
_______________: a bone grows or remodels in response to forces or demands placed upon it
Handedness results in bone of one upper limb being ___________ and __________.
thicker and stronger
Curved bones are thickest where they are most likely to _________.
Trabeculae form along lines of __________.
Where do large, bony projections occur?
Where heavy, active muscles attach
Four ways bones are classified:
Position of bone ends after fracture
Completeness of the break
Orientation of the break
___________ = normal position
____________ = out of alignment
____________ = broke all the way through
____________ = not broke all the way through
_____________ = parallel to long axis of bone
_____________ = perpendicular to long axis
_________________ = bone penetrates the skin
_____________ = bone ends do not penetrate the skin
Compound is __________.
Simple is ___________.
All fractures can be described in terms of what 3 things?
Nature of the break
________________ = bone fragment in 3 or more pieces
____________ = bone is crushed
______________ = twisted forces are applied to the bones
_____________ = seperation (only in children)
_____________ fracture ends bone growth.
_____________ = broken inward
_______________ = only one side breaks
Greenstick happens in __________ & _________.
children and elderly
Chapter 6: Part 5
Part 5: Bones and Skeletal Tissues