1
What are the two main groups of the skeleton by location?
axial and Appendicular
True or False: Long bones are wider than they are long.
False
What is it called when the break is all the way through?
Complete
What hormone is implicated in osteoporosis in older women
estrogen
What is the fluid found in moveable joints?
Synovial Fluid
What are the 4 main classifications of bones
long, short, flat, irregular
What are the two bone textures?
Spongy and compact
Where is a depressed fracture usually located?
The skull
what layer of bone is Periosteum?
outer membrane of bone
What part of the bone is the Diaphysis
Shaft
Where are short bones located?
In the wrist and ankle
What are osteoblasts?
Bone-forming cells
A bone is fractured parallel to the long axis of the bone. What kind of fracture is it?
Linear fracture
What is Wolff's law?
A bone grows or remodels in response to forces or demands placed upon it
Where is red marrow found in adults?
Spongy bone in the heads of the femur and humerus
What is an example of a flat bone?
sternum, scapulae
Describe the five functions of bone.
Support, Protection, movement, storage, blood cell formation
What is a displaced fracture?
The ends of the break are out of normal alignment.
What is the Endosteum?
Delicate membrane on internal surfaces of bone
What is the first stage in healing a bone fracture?
blood clots (Hematoma) start to form
what is an Osteon
structural unit of bone
What are the hairlike canals that connect lacunae to each other and the central canal?
Canaliculi
What is the type of fracture that is incomplete and common in children
greenstick
What are lacunae?
Small cavities that contain osteocytes.
what are the two phases of bone growth?
Interstitial and Appositional