M2-C1-L20 --> Histology: Cartilage
Terms
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- Define cartilage.
- Specialized fibrous connective tissue.
- What are mature cartilage cells called?
- Chondrocytes
- T/F - Cartilage is vascular in nature.
- False - It is avascular in nature.
- What are the three functions of cartilage?
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1. Supports soft tissue
2. Provides resilient, yet durable covering for bone.
3. Development and Growth of long bones - What are the three types of cartilage?
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1. Hyaline
2. Elastic
3. Fibrous - Describe the location of hyaline cartilage. x2
-
1. Articular ends of long bones
2. Walls of respiratory passages.
(bronchi, larynx, nose, trachea) - Describe the matrix of hyaline cartilage. x3
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1. Amorphous ground substance
2. Territorial (capsular) matrix.
3. Interterritorial (intercapsular) matrix. -
Perichondrium
- type of tissue
- location -
Dense irregular connective tissue
Surrounds cartilage except at the articular surfaces. - What are the two layers of perichondrium?
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1. Outer fibrous layer
2. Inner cellular layer - What are the contents of the outer fibrous layer of the perichondrium?
- Type I collagen, fibroblast, and blood vessels.
- What is the function of the inner cellular layer of Perichondrium?
- Provides chondrogenic cells
- Where do you find chondrocytes?
- Embedded in lacuna.
- What are chondrocytes derived from?
- Chondroblasts
- Chondrocytes contain extensive what? x4
-
1. Golgi
2. Glycogen
3. RER
4. Lipid Droplets - Describe what is located superficically to chondrocytes.
- Ovoid cells
- Describe what is located deep to the chondrocytes.
- Isogenous groups
- Histogenesis of hyaline cartilage is stimulated by what? x3
-
1. Growth hormone
2. Thyroxine
3. Testosterone - Histogenesis of hyaline cartilage is inhibited by what? x3
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1. Estradiol
2. Cortisone
3. Hydrocortisone - Histogenesis of hyaline cartilage is similar to that of what? x2
- Elastic and fibrocartilage
- Histogenesis occurs by what types of growth? x2
-
1. Interstitial growth
2. Appositional growth - What is the function of elastic cartilage?
- Give flexible support
- Some locations of the elastic cartilage. x3
-
1. Auditory tube
2. Pinna of Ear
3. Epiglottis - What is the function of fibrocartilage?
- For support and tensile strength.
- Some locations of the fibrocartilage? x5
-
1. Pubic Symphysis
2. Articular disc
3. Intervertebral disc
4. Ligament/tendon insertion
5. Meniscus - What does fibrocartilage lack compared to other types of cartilage?
- Perichondrium
- What is a key visible feature of arrangement in fibrocartilage?
- Alternating, parallel rows of fibroblasts.
- Describe the types of collagen for each cartilage.
-
Hyaline - Type II
Elastic - Type II
Fibrocartilage - Type I - What is a key visible feature of arrangement in Hyaline?
- Arranged in groups
- Which cartilage is acidophilic?
- Fibrocartilage
- Which cartilage is basophilic?
- Hyaline
- Which cartilage has no perichondrium?
- Fibrocartilage