Chapter 5 Skeletal System Flashcards
axis of skeleton
skull and vertebrae
cervical vertebrae
c1-c7 (first=atlas, second-axis)
thorax
12 pairs of ribs joined at sternum
thoracic vertebrae
t1-t12
lumbar vertebrae
L1-L5
coccyx
four to five fused bones
sternum
breastbone
appendicular skeleton
appended to axial
-shoulder
-upper extremities
lower division
pelvic bones
legs
pelvis
joins the sacrum and coccyx
- ilium
- ischium
- pubis
os coxae
pelvic/hip bone
acetabulum
deep socket in hip
cranium
houses brain, ear, and eye sockets
hand bones
carpals, metacarpals, phalanges
foot bones
tarsals, meta tarsals, phalanges
osteoblasts
cells that produce bone
cartilage
dense connective tissue, bone formed when calcium and phosphorous is added to it
ossification
bone forming, begins before birth and continues into adulthood
collagen
fibrous protein, give bone strength and resilience
is bone living?
YES!!!! it is constantly being replaced and remodeled
osteocytes
mature bone cells that help to maintain bone tissue
osteoclasts
breakdown of bone to release minerals or reshape/repair
resorption
destroying bone so that components are taken into circulation
normal if in balance with bone formation
abnormal resorption?
if greater or less than that of bone growth