Cartilage Flashcards
What collagen is more predominant in cartilage?
Type II
What type of collagen is found in fibrocartilage?
Type I - needed for the strength
Articular cartilages are NOT surrounded by perichondrium, true or false?
TRUE
What immediately surrounds isogenous groups?
Territorial and interterritorial matrix. Territorial is closest to the isogenous groups
What is the difference between territorial and interterritorial matrix?
TM- These are moderately staining, consisting of TIIC randomly arranged (decreased amount tho) and high GAGs
IM- less intensely stained but more collagen and fewer proteoglycans
“The growth plate” is composed of what kind of cartilage?
Hyaline cartilage; hyaline cartilage is very important in the growing skeleton
What is perichondrium?
A girdle that surrounds HYALINE cartilage and elastic cartilage
Perichondrium is made up of what CT component?
Dense irregular CT
How does hyaline cartilage get its nutrients from the blood?
The vascular supply from the perichondrium!
What are the two layers of the perichondrium? What are their functions?
Fibrous layer and chondrogenic layer. The fibrous layer is the outer layer and it produces TIC and elastin. It is the transitional zone between cartilage and surrounding general CT. The chondrogenic layer is an inner cell layer that differentiates into chondroblasts and secretes type II collagen
What is the primary function of the chondrogenic layer of the periosteum?
It is here that there are cells remain undifferentiated over time and can become chondroblast – will secrete matrix – surrounds itself and make lacunae – transition into chondrocyte and remain in the tissue– THIS IS HOW WE HAVE GROWTH AS A CHILD/REPAIR
What is the major difference between hyaline and elastic cartilage?
elastic fibers in the matrix
How are the collagen fibers different in fibrocartilage than in other kinds of cartilage?
The fibers are oriented in the direction of functional stress. This type of cartilage is able to withstand compression and shearing forces
Which type of cartilage has the least amount of cartilage matrix?
Fibrocartilage
Which type of cartilage does not have perichondrium surrounding them?
Fibrocartilage
