Bone Flashcards
Functions of skeletal system
ss, f
afsmat
p dtaoft ex cb (b) vc(sc) rc (hal) papg
structural support, framework
attachment for skeletal muscles and tendons
protection delicate tissue and organs from trauma ex cranial bone (brain) vertebral column (spinal cord) rib cage (heart lungs) pectoral and pelvic gridle
Function of bone
assistance in movement
skeletal muscle attach to bone allows for movement
bones serve as anchoring attachments
mineral storage and release
18% of bw
stores 99% of body’s mineral reserves
Long bones l cmcbtts cod(s) svfs
ex upper and lower extermities h rau m f tf m p
long
contain more compact bone tissue than spongy
consists of diaphysis (shaft)
slightly curved for strength
ex upper and lower extermeties humerus radius ulna metacarpal (wrist) femur (thigh) tibia fibula (leg) metatarsals phalanges
Short bone
cube shaped
equal in length, width, and depth
more spongy than compact
ex
carpals (wrist)
tarsals (ankle)
Flat bone t si2cb p ma
ex cb b r p pg d (cb)
thin
spongy in-between two compact bones
protection
muscle attachment
ex cranial bones breast rib pectoral pelvic gridle diploe (cranial bone)
Irregular
vs
sf
vbcasb
ex
bovc
cfb
c (hb)
varied shapes
surface features
varied between compact and spongy bone
ex
bones of vertebral column
certain facial bones
calcaneus (heel bone)
Sesamoid bone
s, sbtdakjwt
pwatihfa
ex
bobt
p
small, smooth bones that develop at knee joint within tendons
prevents wear and tear in high friction areas
ex
base of big toe
patella (knee joint)
Anatomy of long bone d - bs/b e - rbm m - e p/l (wbg), (lob) ac - lpabs mc - sbf
diaphysis - bones shaft/body
epiphysis - red bone marrow
metaphysis - epiphyseal plate/line (where bone grows), (length of bone)
articular cartialge - lacks perichondrium and blood supply
medullary cavity - stores bodys fat
Periosteum modict abs aptbbpf e mc
made of dense irregular connective tissue
associated blood supply
attaches periosteum to bone by perforating fibers
endosteum
medullary cavity
Histology of compact bone Location bs Density hd, css Surface anatomy clns Deep anatomy ccor (o)
bone surface
high density, contains small spaces
concentric layers near surface
concentric circles or rings (osteons)
Histology of spongy bone
location bi
density ld, lsvtne
anatomy laitc (t)
bones interior
low density, large spaces visible to naked eye
lamaellae arranged into thin columns (trabeculae)