connective tissue histology

what are the 3 types of cartilage

• what 3 structures do they not contain

3 types: hyaline (articular is a specialised form), elastic and fibrocartilage  

• No BVs, nerves or lymphatics  

what properties does collagen and proteoglycans provide in cartilage

Collagen types give high tensile strength 

Proteoglycans give high compressibility  

ECM - proteoglycans

• what are they made up of 2

• what do GAGs provide

• They consist of a core protein with one or more glycosaminoglycan GAG chain  

• GAGs provide hydration and swelling pressure to the connective tissue enabling it to withstand compressional forces  

label:

• fibrocartilage

• hyaline articular cartilage

• elastic cartilage

• hyaline cartilage

• what are the two bone layers

• what do collagen and minerals provide for bones

• compact and cancellous/trabecular

• Collagen types gives it flexibility  

  Mineral salts give it resistance to stress/force  

• osteoclast function

• osteoblast function

• what structure does cortical bone contain O

OSTEOCLASTS 

• Reabsorb bone  

• Multinucleated  

• Fewer  

OSTEOBLASTS  

• Form bone  

• Mononucleated  

• More of them  

CORTICAL BONE  

• Contain osteons  

embryology MSK

• in embryo, where are bones formed from

• flat bones

• long bones

• In the embryo, bones are formed from muscular stem cells  

• Flat bones are formed directly from MSCs  

• Long bones are formed from cartilage templates