Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key

image

Play button

image

Play button

image

Progress

1/57

Click to flip

57 Cards in this Set

  • Front
  • Back
A weight-bearing CT found where both support and flexibility are needed.
Cartilage
Cartilage is found where _____ and _____ are needed.
support and flexibility
Cartilage is composed of:
1)
2)
3)
1) Chondrocytes
2) Ground Substance
3) CT fibers
What two things make up the extracellular matrix?
Ground substance
CT fibers
The ____ matrix is avascular.
cartilage
How do chondrocytes get their nutrition?
By diffusion of substances through the matrix.
Why is it important that the ECM in cartilage doesn't have too much collagen?
If you have tons of collagen it will become tightly packed and choke off the chondrocytes (which rely on diffusion).
In cartilage:
______ embryonic cells give rise to ________ which become ________ cells.
Chondrogenic embryonic cells
Chondroblasts
Chondrocytes
Cartilage cells actively making ground substance and Type II Collagen are called?
Chondroblasts
Cartilage cells surrounded by matrix are called?
Chondrocytes
In what type of cartilage do you find lacunae?
Hyaline Cartilage
What is an isogenous group?
Cell nest of 2-4 chondrocytes.
These cartilage cells make and maintain the cartilage matrix.
Chondrocytes
An amorphous gel consisting mainly of proteoglycans and the glycoprotein chondronectin.
Ground substance
In what glycoprotein are the CT fibers of cartilage embedded?
Chondronectin
What is contained in the proteoglycan aggregates of the ground substance of cartilage?
Chondroitin
Keratan Sulfate
Hyaluronic Acid
CT fibers in hylaine cartilage are generally what type?
Type II Collagen
How does the matrix of hyaline cartilage stain and why?
What can cause this to vary?
Acidphilic due to its collagen fibers.
This can vary with age and location in the body.
What is the matrix immediately surrounding the lacune called?
Territorial Matrix
How does the Territorial Matrix stain and why?
More basophilic (usually) because it is newly formed and is poor in collagen but rich in glycosaminoglycans.
Perichondrium
Where & What?
A vascular membrane that surrounds all hyaline cartilage except for hyaline articular cartilage.
What are the layers of the Perichondrium?
Outer= Fibrous
Inner= Chondrogenic
Fibrous Layer of Perichondrium
Made of?
Vascularity?
Outer Layer of Perichondrium.
Made of Type I Collagen Fibers and Fibroblasts (Dense Irregular CT).
Vascular.
Has little perforations in the dense irregular CT for blood vessels to pierce through.
Chondrogenic Layer of Perichondrium.
Whats in it?
Deep to the Fibrous Layer.
Consists of undifferentiated cells that give rise to chondrocytes.
What are the two types of cartilage growth?
1) Appositional Growth
2) Interstitial Growth
Appositional Growth
Process?
Cells of the chondrogenic layer of the perichondrium differentiate into chondroblasts.
The chondroblasts lay down cartilage matrix under the perichondrium.
Like layers of paint.
Interstitial Growth
Process?
Chondrocytes within the matrix divide and the daughter cells lay down more matrix. (Possible because cartilage is soft and malleable.)
Resembles bread dough rising. (Enlarges from the inside.)
In general, the closer a cell is to the perichondrium, the ____ active it is.
more
What are the three types of cartilage?
1) Hyaline
2) Elastic
3) Fibrocartilage
Most long bones in a fetus start out as _________ and are later replaced by bone.
Hyaline Cartilage
Where is hyaline cartilage found?
Developing skeleton
Articular Cartilage
Tracheal Rings
Some of the Laryngeal Cartilages
Nose
Ventral Ends of Ribs
What is the most common type of cartilage?
Hyaline Cartilage
Type of cartilage?
long bones in fetus
Hyaline
Type of cartilage?
Articular Cartilage
Hyaline
Type of cartilage?
Tracheal Rings
Hyaline
Type of cartilage?
Nose
Hyaline
Type of cartilage?
Ventral ends of ribs
Hyaline
Where is Elastic Cartilage found?
External Ear
Eustachian Tube
Epiglottis
Some laryngeal cartilages (where you need extra resiliency)
Type of cartilage?
External Ear
Elastic
Type of cartilage?
Eustachian tube
Elastic
Type of cartilage?
Epiglottis
Elastic
Type of cartilage?
Some Laryngeal Cartilages (when you need extra resiliency)
Elastic
What kind of fibers are in Elastic cartilage?
ELASTIC fibers and Type II Collagen Fibers
More/less cell nests are found in Elastic Cartilage than in Hyaline Cartilage?
Less
Elastic cartilage is surrounded by a _______, like _______ cartilage.
Perichondrium
Hyaline
This type of cartilage is found where support and tensile strength are needed.
Fibrocartilage
Where is Fibrocartilage found?
Tendon insertions
Annulos Fibrosis of IV disc
Pubic Symphysis
Articular Discs
Menisci of Knee
Type of cartilage?
tendon insertions
Fibrocartilage
Type of cartilage?
annulus fibrosis
Fibrocartilage
Type of cartilage?
Pubic symphysis
Fibrocartilage
Type of cartilage?
Mensici of knees
Fibrocartilage
What gives the matrix of Fibrocartilage a deeply acidophilic (eosiniphilic) appearance?
Type I Collagen Fibers
What kind of collagen does Fibrocartilage have?
Type I AND Type II Collagen
In this type of cartilage, the chondrocytes tend to line up in rows between the collagen fibers.
Fibrocartilage
This type of cartilage does not have a perichondrium.
Fibrocartilage
What is the only type of cartilage that contains Type I Collagen?
Fibrocartilage
Is Fibrocartilage easily repaired? Why or why not?
NO.
There is no perichondrium so very little nutrients get through making it extremely hard to repair fibrocartilage.