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Skeletal Cartilage's Growth

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jennarock's version from 2016-10-25 19:16

Section 1

Question Answer
Appositional growthan increase in size by the addition of new chondroblasts from the perichondrium and secretion of new matrix
direction in which it occursoutside-in
step 1chondroblasts secret matrix
step 2pushing perichondrium outward
step 3becomes trapped in lacunae
step 4mature turning into chondrocytes
step 5help keep matrix around them alive
allows for growth inwidth
memorize

Section 2

Question Answer
Interstitial growthlacunae bound chondroycytes divide and secrete new matrix expanding cartilage from within
direction in which it occursinside-out
step 1stem cells produce chondroblasts
step 2chondroblasts secret matrix
step 3trapped in lacunae
step 4mature into condrocytes
step 5 divide and multiply
step 6create clones (isogenic groups)
growth stopsduring adolescence, before adulthood
memorize