Terms in this set (31)
Describe a long bone.
2 ends with a long, narrow part in the middle
give examples of a long bone.
humerus, radius, ulna, femur, phalanges
describe a short bone.
looks like rocks or stones
give examples of a short bone.
patella, carpals, tarsals
give examples of a flat bone.
sternum, scapula, rib
give examples of an irregular bone.
coxal bone, sacrum, symphysis pubis
what is a sesamoid bone and where does it develop?
the patella "kneecap" : tendons
where are sutural bones located?
between the flat bones of the skull
what bone is the diaphysis made of?
what bone is the epiphysis composed of?
spongy bone - holds the red marrow
what is the function of the epiphysis?
provides attachment for muscles and gives stability to joints
`what is another name for the epiphyseal plate?
where can you find articular cartilage?
covering the surface of the epiphysis - cushions joints
where is the periosteum and what is it's function?
membrane that covers the long bone and attaches tendons to bones
where is the medullary cavity and what does it contain?
hollow space in the diaphysis filled with yellow marrow
where is the endosteum found.
surrounding the medullary cavity
describe what an osteon (Haversian system) is.
structural unit of bone that permits delivery of nutrients
describe a haversian canal
runs through the center of each osteon and contains blood vessels and lymphatic vessels
describe a volkmann canal
run perpendicular to haversian canals and connect them
what is another name for bone tissue?
what are the %'s of bone makeup?
65% - calcium compounds
33% - collagen fibers
2% - cells
describe the strengths and weaknesses of hydroxyapatite crystals
hard, but inflexible and brittle
describe the strengths and weaknesses of collagen fibers
strong, tolerates twisting, but bends when forced
describe intramembranous bones
broad, flat bones of the skull
describe endochondral bones
all other bones
what happens during ossification?
hyaline cartilage gradually turns into bone tissue
where is the primary ossification center?
where is the secondary ossification center?
produce bone cells called osteocytes
dissolve bone tissue through resorption
what are the 6 functions of bone?
support, protection, movement, storage of minerals, blood cell production and fat storage
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