Thẻ ghi nhớ: Bone Microanatomy | Quizlet

osteon

each circular grouping of osteocytes, lamellae, central canal, canaliculi, etc.

central canal

space at the center of an osteon; contains blood vessels

periosteum

external "shrink wrapping" around the diaphysis of bones

endosteum

wrapping inside bones; lines medullary cavity

lacunae

pockets that contain osteocytes

lamellae

layers of matrix (calcium phosphate)

concentric lamellae

layers of matrix arranged in circles (like a target)

canaliculi

small tunnels through which nutrients can pass from blood vessels to lamellae; tiny black lines in image

trabeculae of spongy bone

"spokes" of bone tissue; branch out while also creating holes for red bone marrow

epiphyseal line

line of bone tissue that has "closed"... composed of bone, not cartilage. growth at this stage has stopped

epiphyseal plate

Growth plate, made of cartilage, gradually ossifies; (letter c in the image)

perforating canals

Perpendicular to the central canal
Carry blood vessels into bone and marrow

medullary cavity

cavity within the shaft of the long bones filled with bone marrow

osteocyte

a bone cell, formed when an osteoblast becomes embedded in the matrix it has secreted.

articular cartilage

covers the surfaces of bones where they come together to form joints

Sharpey’s fibers

nutrient arteries

nutrient foramen

circumferential lamella

spongy bone

compact bone