Ch. 6 Bone Tissue Flashcards
Framework on which the body is built
Support
List the functions of bone
Support Protectection Movement Hemopoiesis Mineral storage Fat storage
Blocks and hides internal organs
Protection
Muscles pull against bones, allowing movement
Movement
Red marrow makes blood cells, located in many bones
Hemopoiesis
Calcium and phosphorus
Mineral storage
Yellow marrow inside the shaft of long bones
Fat storage
Osteogenic cells
Only bone cells that divide, make all rest
Osteoblasts
Lay down bone
Osteocytes
Main bone cells, maintain bone
Osteoclasts
Reabsorb and redesign bone
Spongy bone
Red bone marrow; hemopoiesis
Compact bone
Thick and solid; protect and support
Diaphysis
Middle shaft of bone
Epiphysis
Ends of bone
Metaphysis
In between diaphysis and epiphysis
Intramemebranous ossification
Primary and secondary ossification centers grow together in a connective tissue
Endochondral ossification
Cartilage model is turned to bone
Interstitial growth
Length growth, epiphysis plate, cartilage end in metaphysis
Appositional growth
Width growth
Parathyroid Hormone
Raises low levels of calcium
Calcitonin
Lowers high levels of calcium
Open bone fracture
Bone through the skin
Closed fracture
Not through skin
Displaced
When the alignment of the bone is changed
Non displaced
The alignment of the bone is intact
Comminuted fracture
Broken into many little pieces
Impacted fracture
Bone broken, stuck back together by force
Greenstick fracture
When There is a bend in the bone; pediatrics
Describe the fracture healing
Fracture healing begins with a hematoma formation (immediately) then fibrocatilaginous callus forms, then there’s the bony callus formation and finally the bone is remodeled.
