Podcast
Questions and Answers
Which type of cartilage is characterized by the presence of an abundant network of elastic fibers?
Which type of cartilage is characterized by the presence of an abundant network of elastic fibers?
- Type II cartilage
- Fibrocartilage
- Elastic cartilage (correct)
- Hyaline cartilage
What type of collagen fibers are found in fibrocartilage?
What type of collagen fibers are found in fibrocartilage?
- Type III collagen fibers
- Type I collagen fibers (correct)
- Type II collagen fibers
- Collagen fibers not specified
Which of the following sites is associated with hyaline cartilage?
Which of the following sites is associated with hyaline cartilage?
- Costal cartilage (correct)
- Ear pinna
- Synovial joints
- Intervertebral discs
Which of the following is NOT true regarding chondrocytes?
Which of the following is NOT true regarding chondrocytes?
What is the ground substance of the extracellular matrix composed of?
What is the ground substance of the extracellular matrix composed of?
Which characteristic distinguishes fibrocartilage from other cartilage types?
Which characteristic distinguishes fibrocartilage from other cartilage types?
In which location would you typically find fibrocartilage?
In which location would you typically find fibrocartilage?
What is a common function of chondroblasts?
What is a common function of chondroblasts?
Which type of cartilage is characterized by the presence of type II collagen that cannot be seen easily under light microscopy?
Which type of cartilage is characterized by the presence of type II collagen that cannot be seen easily under light microscopy?
What is a key feature of elastic cartilage compared to hyaline cartilage?
What is a key feature of elastic cartilage compared to hyaline cartilage?
What is the primary role of chondroblasts in cartilage?
What is the primary role of chondroblasts in cartilage?
Where are chondrocytes typically located within the cartilage structure?
Where are chondrocytes typically located within the cartilage structure?
Which feature distinguishes cartilage from other types of connective tissue?
Which feature distinguishes cartilage from other types of connective tissue?
What unique characteristic is observed in the cytoplasm of chondrocytes?
What unique characteristic is observed in the cytoplasm of chondrocytes?
In which of the following locations would you NOT find a perichondrium?
In which of the following locations would you NOT find a perichondrium?
Which component is NOT a part of the extracellular matrix of cartilage?
Which component is NOT a part of the extracellular matrix of cartilage?
What is the maximum number of chondrocytes that can be found in a single lacuna?
What is the maximum number of chondrocytes that can be found in a single lacuna?
Which layer of the perichondrium contains chondroblasts?
Which layer of the perichondrium contains chondroblasts?
How do chondroblasts change when they become chondrocytes?
How do chondroblasts change when they become chondrocytes?
Which best describes the organization of cartilage?
Which best describes the organization of cartilage?
Flashcards
What is cartilage?
What is cartilage?
Cartilage is a specialized connective tissue that's firm, flexible, and strong.
Is cartilage vascular?
Is cartilage vascular?
Cartilage lacks blood vessels, so it gets its nourishment from surrounding tissues.
What is the perichondrium?
What is the perichondrium?
The perichondrium is a fibrous sheath that covers most cartilage, providing support and nourishment.
What are chondroblasts?
What are chondroblasts?
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What are chondrocytes?
What are chondrocytes?
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What are isogenic groups?
What are isogenic groups?
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What makes up the cartilage matrix?
What makes up the cartilage matrix?
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What is the role of collagen fibers in cartilage?
What is the role of collagen fibers in cartilage?
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What is the role of elastic fibers in cartilage?
What is the role of elastic fibers in cartilage?
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What is the role of ground substance in cartilage?
What is the role of ground substance in cartilage?
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Chondroblasts
Chondroblasts
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Chondrocytes
Chondrocytes
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Extracellular Matrix of Cartilage
Extracellular Matrix of Cartilage
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Collagen Fibers in Hyaline Cartilage
Collagen Fibers in Hyaline Cartilage
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Elastic Fibers in Elastic Cartilage
Elastic Fibers in Elastic Cartilage
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Hyaline Cartilage
Hyaline Cartilage
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Elastic Cartilage
Elastic Cartilage
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Fibrocartilage
Fibrocartilage
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Perichondrium
Perichondrium
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Ground Substance of Cartilage
Ground Substance of Cartilage
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Study Notes
Cartilage
- Cartilage is a firm, flexible, strong connective tissue, composed of cells, fibers, and intercellular matrix.
- It's avascular, meaning it relies on diffusion of nutrients from blood vessels in the perichondrium for nourishment.
- Perichondrium is a dense irregular connective tissue sheath surrounding most cartilage, except in joint capsules.
Structure of Cartilage
- Cartilage cells include chondroblasts and chondrocytes.
- Chondroblasts are found under the perichondrium, are oval or spindle-shaped, and have basophilic cytoplasm and a pale nucleus. They produce the matrix.
- Chondrocytes reside in lacunae, either singly or in groups (isogenic groups), have less basophilic cytoplasm, and darker-staining nuclei. They are less active than chondroblasts.
- Extracellular matrix is composed of:
- Fibers:Â Hyaline cartilage contains type II collagen fibers; elastic cartilage has abundant elastic fibers in addition to collagen fibers; fibrocartilage contains type I collagen fibers.
- Ground substance: This is basophilic, consisting of proteoglycans and glycoproteins.
Types of Cartilage
- Hyaline cartilage: Most common type; contains collagen fibers (Type II); found in costal cartilage, articular cartilage, and trachea.
- Elastic cartilage: Most flexible type; contains abundant elastic fibers; found in the ear pinna.
- Fibrocartilage: Intermediate between dense connective tissue and cartilage; contains many collagen fibers (Type I); found in intervertebral discs.
Test Yourself (Questions)
- Which one of the following is the most flexible type of cartilage? Elastic cartilage.
- Which cell type is responsible for protein and fiber synthesis in cartilage? Chondroblasts.
- Which cartilage type contains elastic fibers? Elastic cartilage.
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