Assertion: periosteum | /r/HasProperty | vascular
Facets:
value: very
type: DEGREE
value: later in life
type: TEMPORAL
value: in young bones
type: LOCATION
Source sentences:
text: In young bones the periosteum is thick and very vascular, and is intimately connected at either end of the bone with the epiphysial cartilage, but less closely with the body of the bone, from which it is separated by a layer of soft tissue, containing a number of granular corpuscles or osteoblasts, by which ossification proceeds on the exterior of the young bone.
text: Later in life the periosteum is thinner and less vascular, and the osteoblasts are converted into an epithelioid layer on the deep surface of the periosteum.
text: The periosteum is a highly vascular tissue and is comprised of 2 layers: the inner cellular or cambium layer that contains numerous osteoblasts and osteoprogenitor cells  and an outer fibrous layer composed of dense collagen fibre and fibroblasts and their progenitor cells .