Module 6 - Cartilage

type of connective tissue composed of cells known as chondrocytes and collagen or yellow elastic fibers

Cartilage

Cartilage is a type of?

connective tissue

Cartilage is composed of?

chondrocytes and collagen or yellow elastic fibers

Cartilage is not as hard as?

bone

not as hard as bone and much more flexible and elastic

Cartilage

fibers and cells embedded in firm gel-like matrix of polysaccharides

Cartilage

Cartilage fibers and cells is embedded in?

firm gel-like matrix of polysaccharides

Cartilage has no?

• no blood vessels

• no lymphatics

• no nerves

It has no blood vessels or lymphatics, nutrition diffuses through the matrix, hence, slow healing process

Cartilage

Cartilage has no nerves, therefore it is?

Insensitive

Cartilage is surrounded by fibrous membrane called?

Perichondrium

Perichondrium plays a major role in?

regeneration

Cartilage’s ________________ has no perichondrium thus regeneration after injury inadequate

articular surface

when cartilage calcifies, chondrocytes die and cartilage replaced by?

bone-like tissue

when cartilage calcifies, _________ die and cartilage replaced by bone-like tissue

chondrocytes

not present in matrix, instead chondroitin which provides flexibility

calcium salts

What provides flexibility to cartilage?

Chondroitin

most common type of cartilage

Hyaline

Hyaline is found in the?

• Ribs

• Nose

• Larynx

• Trachea

precursor of bone

Hyaline

Hyaline is precursor of?

bone

What surrounds hyaline cartilage?

Perichondrium

Where are chondrocytes located in hyaline cartilage?

Lacunae

What is the ________-like area immediately surrounding a chondrocyte called?

Capsule

Hyaline has cluster of cells arising from mitosis called?

sogenous groups

Hyaline has which extracellular matrix?

homogenous extracellular matrix (ECM)

Hyaline matrix immediately surrounding capsule called?

territorial matrix

Hyaline matrix that occupies majority of space between chondrocytes called?

interterritorial matrix

Matrix of hyaline

• territorial matrix

• interterritorial matrix

Fibrocartilage is found in?

• intervertebral discs,

• joint capsules,

• ligaments

intermediate in appearance between dense connective tissue and hyaline cartilage

Fibrocartilage

Does fibrocartilage have an identifiable perichondrium?

No

What is the appearance of fibrocartilage intermediate between?

Dense connective tissue and hyaline cartilage

Fibrocartilage matrix is _______ due to large amounts of coarse type I collagen fibers

acidophilic

Fibrocartilage matrix is acidophilic due to large amounts of?

coarse type I collagen fibers

It has few cells when compared with hyaline cartilage

Fibrocartilage

Elastic is found in?

• External ear,

• Epiglottis

• Larynx

Where are chondrocytes located in elastic cartilage?

Lacunae

What surrounds elastic cartilage?

Perichondrium

Which fibers predominate in the ECM of elastic cartilage?

elastic fibers

elastic fibers predominate in the ECM which gives?

heterogenous or fibrillar appearance when stained with H & E

very thin fibers have same refractive index as matrix of cartilage, thus fibers not seen

Hyaline cartilage

articular cartilage of long bones, sternum, ribs

Hyaline cartilage

Hyaline cartilage is the _________ of long bones, sternum, ribs

articular cartilage

Hyaline cartilage is the articular cartilage of?

long bones, sternum, ribs

bluish white in color and flexible

Hyaline Cartilage

Hyaline cartilage color

bluish white

numerous white fiber

Fibrous cartilage

in symphysis pubis, sterno-clavicular joint

Fibrous cartilage

Fibrous cartilage is also in?

• symphysis pubis,

• sterno-clavicular joint

Fibrous cartilage color

glistening white and opaque

numerous yellow elastic fibers

Elastic cartilage

pinna of ear, external auditory meatus, Eustachian tube, epiglottis

Elastic cartilage

Elastic cartilage color

yellowish and appearance is opaque