Cartilage

Question 1

What are the specialized cell types in cartilage

Answer 1

fibroblasts, chondroblasts, chondrocytes

Question 2

fibroblasts

Answer 2

secrete collagen I and III

Question 3

Chondroblasts

Answer 3

Dividing cells of cartilage tissue; begin matrix production

Question 4

Chondrocytes

Answer 4

Mature cells of cartilage; continue matrix production; embedded in matrix lacunae

Question 5

What is the cartilage matrix made from

Answer 5

protein fibers, ground substance

Question 6

protein fibers of cartilage

Answer 6

collagen

Question 7

Ground substance

Answer 7

chondroitin sulfate proteoglycan

Question 8

hyaline

Answer 8

most abundant; no visible protein fibers; respiratory tree, joints, fetal skeleton; surrounded by dense connective tissue called perichondrium

Question 9

Fibrocartilage

Answer 9

acts as shock absorber, thick collagen fibers in matrix, found where strength needed; knee joint, vertebral discs, pubic sym.

Question 10

Elastic

Answer 10

least abundant type; highly branched elastic fibers in matrix; ear, epiglottis; surrounded by perichondrium

Question 11

interstitial growth

Answer 11

mitotic division of chondrocytes; cells secrete own EC matrix and separated by matrix border; result: 2 chondrocytes, 2 lacunae, more matrix

Question 12

Appositional Growth

Answer 12

mitotic division of stem cells along internal edge of perichondrium into new chondroblasts; newly formed chondroblasts begin to secrete extracellular matrix; differentiate into chondrocytes

Question 13

What is interstitial growth

Answer 13

growth from within the cartilage itself

Question 14

what is appositional growth

Answer 14

growth along the cartilage periphery

Question 15

why does cartilage take a while to heal?

Answer 15

lack of blood flow