histology bone CT LOs

name the 3 cells of bone

osteblasts, osteclasts, osteocytes

What do we call the extracellular matrix of bone?

osteoid

What type of collagen does the osteoid have?

type I collagen

What do we call the inorganic calcium phosphate crystals that precipitate and mineralize the osteoid?

hydroxyapatite crystals (compressive strength)

List the 2 types of bone that make up the “microscopic architecture” of bone

woven and lamellar

what is the purpose of the central canal?

provides vascular acess, nutrients, nerve fibers

what are lamellae?

the layers that are organized into the central canal, direction alternates for rigid support

where are osteocytes located in the bone?

lacunae

what is the purpose of canaliculi?

enable communication and nutrient flow between osteocytes

what are perforating canals?

connect central canals with eachother and the marrow cavities

what type of CT proper makes up the endosteum?

loose irregular CT (allows space for blood vessels)

what type of CT proper makes up periosteum?

dense irregular CT

what do we call the fibrous structures that anchor periosteum to bone (some ligaments and tendons to bone, periodontal ligament of teeth, etc)?

perforating fibers or sharpeys fibers