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Cartilage and Joints by Mind Map: Cartilage and Joints
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Cartilage and Joints

Elastic Cartilage

-sec by chondrycytes -requires special elastic stain to visulize fibers (looks like hyaline cartilage in H&E stain) -random orientation of fibers

Composition

**whats the predominant fiber in elastic cartilage???**** -ground substance to fiber ratio

Location (2)

Function (2)

LAB: Elastic Cartilage

dx char: presence of elastic fibers NOTE: in H&E stain it looks just like hyaline chartilage but look for the presenence of elastic fibers be able to identify: -perichondrium (see hyaline cartilage --> EC fibers ---> perichondrium) -chondrogenic layer -isogenic cells (see hyaline cartilage --> cells --> chondroblasts --> isogenic group)

Hyaline Cartilage

Hyaline Cartilage: -lrg, round, randomly scattered cells separated by lots of ECM (Dx of all cartilage) -avascular (Dx of hyaline cartilage) -surrounded by perichondrium (dense irreg CT), except at articular end of bone

Locations in body (5)

Functions of Hyaline Cartilage (4)

Composition (3)

-what is the ground substance to fiber ratio?

Development of Cartilage (3-4 steps)

1- mesenchymal cells condense to form pro cartilage2- chrondroblasts sec matrix3- cartilage formation (induced by low O2 levels when far from bv source)4-now is chondrocyte

LAB: Hyaline Cartilage

what are the dx characteristic of cartilage?? what are the dx characteristic of hyaline cartilage?? be able to pick out : perichondrium (dense irregular CT that surrounds) *chondrogenic layer **** DOES CHONDROGENIC LAYER = PERICHONDRIUM???? *interterritoral and territorial layer *chondroblasts vs. chondrocytes

Fibrocartilage

-lrg & round shape = dx characteristic -not much ground substance bc so much collagen fibers-always associated w/ dense CT ***make sure you can tell the difference bet fibrocartilage and dense reg CT like in tendons****

Lab: fibrocartilage

-lots of fibers running in diff directions how do you know this is not dense irreg CT??

Composition

*what is the predom fiber?*what is it sec by??*ground substance to fiber ratio

Locations (3)

Functions (3)

Joints

Classify

Repair

-difficult bc limited nut support to joint-fractured joint does NOT undergo mitosis

Diseases (2)

Joints LAB

any joints in lab???