CT- Bone and Cartilage Flashcards
(90 cards)
Fibrocartilage contains _____ that is very similar to dense regular connective tissue.
large bundles of regularly arranged collagen
_______ is growth from within.
Interstitial Growth
_______ causes defective resorption and increased bone mass.
Osteopetrosis
Chondrocytes reside in an isolated compartment called a _______.
lacuna
______ are derived from monocytes in the blood.
Osteoclasts
Interstitial Growth is growth _____.
from within
Osteoblasts initiate mineralization of the osteoid by secreting _______.
matrix vesicles
The inner surface where trabeculae contact internal soft tissue is called the ______.
endosteum
Hyaluronic acid promotes _______ and _______.
hydration; flexibility
_______ are present in the periosteal and endosteal surfaces, and in the soft connective tissue of the channels.
Osteoprogenitors
Chondrocytes make _____ and _____.
cartilage matrix; tissue
Bone matrix is unique in that it contains large amounts of a crystallized form of ____ and ___ called hydroxyapatite
Ca2+; PO4
______ can also arise from an external layer of connective tissue that surrounds the cartilage called the perichondrium.
Chondrocytes
Osteomalacia Rickets causes ______ by interfering with mineralization.
abnormal increase in uncalcified osteoid
Long range signals include _________ and________.
steroid hormones; calcium regulation hormones
Osteoclasts are derived from ______ in the blood.
monocytes
Where does appositional growth occur (specifically)?
perichondrium
______ causes abnormal increase in uncalcified osteoid by interfering with mineralization.
Osteomalacia Rickets
Osteoblasts secrete _____.
osteoid
______ contains collagen that forms relatively thin fibrils that are generally arranged in an irregular three dimensional pattern.
Hyaline cartilage
The ground substance of hyaline cartilage is rich in proteoglycans and the free glycosaminoglycan _____.
hyaluronic acid
What is osteoid?
un-mineralized extracellular matrix of bone
Fibrocartilage is found where _____and also in the _____.
tendons attach to bones; intervertebral discs
Elastic cartilage also contains thin collagen fibrils and proteoglycans, but is distinguished by abundant _____ and lamellae of _____.
elastic fibers; elastic material