🤍 Histology LEC - Supportive tissue

Avascular

Cartilage is — Avascular or vascular.

Sulfated glycosaminoglycans and protein

What are the components of proteoglycans?

Dense white fibrous connective tissue

What type of connective tissue composes the outer fibrous layer?

Mesenchymal cells

What is the progenitor cell of chondroblasts?

Appositional growth

What method of growth has an addition of layers of new cartilage to pre-existing cartilage?

Mitosis

How does the interstitial growth expands its pre-existing cartilage?

Intercellular substance

What is the predominant component of cartilage?

Chondrogenic cells

What are the youngest cells of cartilage?

secretion of Extracellular matrix

Function of chondrogenic cells

Chondroblasts

What are the secretory cells of the cartilage?

Chondrocytes

What cell is trapped by their own secretion?

Maintenance of the Extracellular matrix

Function of chondrocytes

Chondroclasts

What cells are responsible for the resorption of cartilage matrix?

Chondrogenic cells

Precursor cell of the chondroclasts

Cell nest

What is the other name for isogenous groups?

Can be

Hyaline cartilage — can or cannot be — found in the Trachea.

Cannot be

Elastic cartilage — can or cannot be — found in the esophagus.

Elastic cartilage

What cartilage has the characteristic presence of equal amounts collagen fibers and elastic fibers?

Herringbone configuration

What is the characteristic presentation of Fibrous cartilage with the form of V?

Intervertebral disk and ligaments of the menisci

Where can we find Fibrous cartilage?

differentiation of chondrogenic cells to chondroblasts

How does the repair of damaged cartilage happen?

Can be

Damaged tissue — can or cannot be — restored.

Mineralized fibrous and amorphous ground substance

What is the composition of bone?

Calcium phosphate

What composes the mineralized matrix?

Is not

Cells — is or is not — the least significant out of the three basic components.

Entire bone except articular surfaces

What parts do the periosteum cover?

through canaliculi

How does osteocytes come into contact with each other?

Appositional growth

What is the method of growth for bone?

Osteogenic cells

What is the precursor cells of osteoblasts?

building new bone formation

Function of osteogenic cells

amorphous and fibrous components of unmineralized bone + stored calcium

What does the osteoblasts secrete?

Osteoblasts

What cells are found in the lining of the trabecular surfaces of the bone?

Osteocytes

What mature bone cells have stopped secreting the bone substance?

blood vessels in the canaliculi

Where does the osteocyte get nutrients?

Multinucleated and the appearance of howship lacunae

What is the characteristic appearance of osteoclasts?

Cancellous bone

What is the other name of woven bone?

flexibility and shock absorption

Function of Cancellous bone

Compact bone

What is the other name of circumferential bone?

addition of bone substance into existing trabeculae

What comprises the lacunae?

Haversian system

What is the circular structure composed of concentric layers of bone substance?

passage of blood vessels and nerves entering the bones

Function of Volksmann’s canal

Zone of proliferation

What layer of epiphyseal plate is where the chondrocytes multiply and elongate?

Resting

What do the chondrogenic cells do in the zone of resting cartilage cells?