Module 3- Skeletal Function and Aging Flashcards
bones
structural and mineralized component of skeletal system
joints
articulations between bones
ligaments
connect bones to other bones
bone structure
dense outer layer, loose inner area
medullary cavities do what to bones?
make them hollow
osteoprogenitor cell
stem cell
osteoblasts
matrix-synthesizing cell
responsible for bone growth
osteocyte
mature bone growth
monitors and maintains the mineralized bone matrix
osteoclast
bone-resorbing cell
collagen fibres do what?
collectively resist twisting forces
framework and cradle for soft organs
support
bones of skull protect brain; vertebral column protects
protection
skeletal muscles attach to bones
anchorage
calcium is essential for many functions; bones are calcium reservoirs
mineral storage
hematopoiesis occurs in red bone marrow
triglyceride storage
bones produce osteocalcin which helps regulate metabolic functions
hormone production
from a hyaline cartilage membrane
(femur, ribs, vertebrae)
endochondral ossification
from a fibrous membrane
(skull, clavicles)
intramembranous ossification
bone remodelling involves what
bone deposition and resorption
leads to in INCREASE in bone density
deposition
leads to a DECREASE in bone density
resorption
