Bones Flashcards
what do bones do?
support and shape the body
protects vital and delicate organs
attachment point for muscles, tendons, and ligaments that allow for movement
what else do bones do?
store mineral salts
contain hematopoetic red bone marrow
what are bones composed of?
Specialized form of connective tissue
50% water and 50% solid material
contains inorganic salts (minerals) that give it hardness
the salts in bone is what allows you to see them on x-ray
when skeleton is first forming it is made of ____ then turns to bone
cartilage
as the body ages, bones become more ____ and lose ____
porous
mass/density
**this causes bones to be more brittle as you get older
oste/o
bone
periosteum
fibrous protective membrane that covers around the bone
rich in blood vessels, nerves, and marrow
compact bone
hard, dense bone material found in the outer layer of the bone
spongy/cancellated
inner, spongy lattice like structure with spaces filled with marrow