Cartilage And Bone Flashcards
What are the three types of cartilage?
Hyaline, elastic, fibrocartilage
What is cartilage?
A resilient, avascular connective tissue consisting of chondrocytes which produce and maintain an extensive extracellular matrix.
In addition to the elements of a hyaline cartilage matrix, what type of collagen is in fibrocartilage?
Type I collagen.
What are the two main functions of cartilage?
Provide support for soft tissues and sliding of joints.
What do you call a group of chondrocytes recently divided?
Isogenous group.
Where is hyaline cartilage found?
Larynx, trachea, bronchus, ear, nose, ribs, articulating surfaces.
What is perichondrium?
Dense connective tissue surrounding hyaline and elastic cartilage.
How is perichondrium involved in cartilage growth?
Appositional growth, contains fibroblast-like cells which develop into chondroblasts, then chondrocytes.
Why do articulating surfaces not have perichondrium?
It would be worn away in the joint.
How is the synthetic activity of chondrocytes directed?
By mechanical, electrical and chemical signals created by pressure loads applied on the cartilage.
What is contained in the matrix of hyaline cartilage?
Hyaluronate proteoglycan aggregates and type II collagen.
How do articulating surfaces receive nutrients if not through perichondrium?
Synovial fluid.
What is the deposition of further matrix by isogenous groups known as?
Interstitial growth.
How is the intercellular matrix resilient to varying pressure loads?
It is highly hydrated.
What do chondrocytes lie in?
Lacunae
