Flashcards in Hell aka bones Deck (79)
Cells of perichondrium secrete matrix against external face of existing cartilage
Cells of perichondrium secrete?
matrix against external face exsiting cartilage
Chondrocytes divide and secrete new matrix, expanding cartilage from within.
What is the skeletal cartilage surround by?
Perichondrium, Dense Irregular CT, Blood vessels
What are the three types of cartilage?
Hyaline, elastic, fibrocartilage
Which type of cartilage: Collagen fibers only, looks smooth and glossy?
Axial skeleton contains...?
skull, vertebral column and rib cage
Axial skeleton purpose?
Appendicular skeleton contains..?
limbs and girdle
Appendicular skeleton purpose?
4 types of bone?
long, short, flat, irregular
longer than wide
limb, wrist and ankle
cube shape- wrist and ankle
thin, flat and slightly curved- sternum, ribs, skull
complicated shapes- vertebrae
Secreted by parafollicular cells of thyroid; inhibits osteoclasts (at pharmacological/high doses in humans)
secreted by parathyroid; stimulates osteoclasts (when Ca2+ is low)
: Secreted by osteoblasts (and high conc. is therefore a surrogate marker to indicate bone deposition/growth
stimulates pancreatic beta cells to secrete insulin, and stimulates adipocytes to secrete adiponectin, which augments insulin sensitivity of cells.
are bones organs?
Bone textures; dense outer layer, smooth and solid
Bone textures: aka cancellous or trabecular, sparse inner layer
outer or inner
outer or inner
What covers articular surfaces?
Osteogenic layer contains?
Yellow marrow is
triglyceride (fat) storage
Red marrow is
Where is red marrow found?
within the trabecular cavities of spongy bone and diploe of flat bones and irregular bones