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?
How many steps are there in endochondral ossification?
Most bones originate as___________
What ossifies bones that originate as hyaline cartilage?
What is the process of replacing other tissues with bone called?
What does not contain osteons?
What is the basic unit of the structure of compact bone?
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?
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?
What produces thinner and weaker bones?
What type of fracture causes the bone to come through the skin?
What type of fracture is only in the ankle and both bones are effected?
What are mature bone cells that maintain the bone matrix?
test 2 ch 6