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What happens when too many calcium ions circulate in the body fluids?
It weakens the bones
What two hormones maintain homeostasis and control storage, absorption, and excretion?
Calcitonin and parathyroid hormones
What does calcitonin and parathyroid hormones do for your body?
Regulates calcium and phosphate levels
What can aid in making your bones thicker and stronger?
Exercise
How many steps are there in endochondral ossification?
Six
Most bones originate as___________
Hyaline cartilage
What ossifies bones that originate as hyaline cartilage?
Endocondral ossification
What is the process of replacing other tissues with bone called?
Ossification
What does not contain osteons?
Spongy bone
What is the basic unit of the structure of compact bone?
Osteon
What are osteoclasts?
Giant multinucleate cells
Osteoclasts do what?
Secrete acids and protein-digesting enzymes.
Blood c3ells are within ________, and organized around the blood vessels?
Lacunae
What are the three bone markings or surface features?
Depressions/grooves, projections, and tunnels
What are a few functions of the skeletal system?
Support, protection, storage of minerals and lipids, blood cell protection, and leverage
What type of fractures occur in the vertebrae?
Compression fractures
What produces thinner and weaker bones?
Normal aging
What type of fracture causes the bone to come through the skin?
Compound fracture
What type of fracture is only in the ankle and both bones are effected?
Pott fracture
What are mature bone cells that maintain the bone matrix?
Osteocytes
Author
chd5688
ID
41445
Card Set
Chapter 6
Description
test 2 ch 6
Updated
2010-10-11T23:03:25Z
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