skeletal system Flashcards
______ are tiny cavities which osteocytes are found.
Lacunae
the _____ skeleton consists of bones in the middle of the body.
axial
____ bone is solid.
compact
Infant skeletons mostly consist of….
cartilage
Bone cells are called….
osteocytes
The ______ skeleton consists of bones in the limbs.
Appendicular
_____ is the process of cartilage hardening into bone.
ossification
lacunae are arranged in circles called…..
lamella
_____ canals contain blood vessels
Haversian
blood cell formation occurs in __ ______
red marrow
Difference between compact and spongy bone?
- compact- solid & provides structure
2. spongy- sponge like structure & provides flexability
how many bones are found in the infant skeleton?
about 300
how many bones are found in the adult skeleton?
206
what does skeletal maturity mean?
all cartilage has been replaced by bone
why is it important for blood vessels reach bone cells?
provide bones with oxygen & nutrients
why is it important for some fetal bones to be unfused?
so that babies fit through birth canal & it prevents bones from shattering during birth
what is found in the middle of lamellae?
haversion canal & blood vessels
which two minerals are stored in bones?
calcium & phosphorus
where is fat stored?
yellow marrow
what is the shaft of a long bone called?
Diaphysis
what are the ends of a long bone called?
Epiphysis
what is the lining of bones called?
periosteum
