Podcast
Questions and Answers
What is the primary function of cartilage in the human body?
What is the primary function of cartilage in the human body?
Hyaline cartilage contains elastic fibers.
Hyaline cartilage contains elastic fibers.
False
Name the cell that is the mother cell for all types of cartilage cells.
Name the cell that is the mother cell for all types of cartilage cells.
Chondrogenic cell
The cartilage matrix is composed of GAGs, glycoproteins, and ___ .
The cartilage matrix is composed of GAGs, glycoproteins, and ___ .
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Match the types of cartilage with their fiber types:
Match the types of cartilage with their fiber types:
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Which location is NOT associated with hyaline cartilage?
Which location is NOT associated with hyaline cartilage?
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The perichondrium is present in all types of cartilage.
The perichondrium is present in all types of cartilage.
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What type of cell is a chondrocyte?
What type of cell is a chondrocyte?
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___ cartilage is primarily located in the ear pinna and epiglottis.
___ cartilage is primarily located in the ear pinna and epiglottis.
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What is the primary characteristic of cartilage?
What is the primary characteristic of cartilage?
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Study Notes
Cartilage Overview
- Cartilage is a specialized connective tissue (CT)
- It lacks blood vessels (avascular)
- Its matrix is firm, rubbery, and resilient
- Functions include support, maintaining airway patency, providing smooth joint surfaces, and shock absorption
Cartilage Classification
- Classified into three types based on fiber type in the matrix:
- Hyaline cartilage
- Elastic cartilage
- Fibrocartilage
Hyaline Cartilage
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Structure:
- Contains collagen fiber type II
- The matrix is significant, basophilic, and composed of glycosaminoglycans (GAGs), glycoproteins, and water.
- Chondroblasts (immature cartilage cells) produce the matrix.
- Chondrocytes (mature cartilage cells) are found in lacunae, often in groups of 2, 4, 8 (cell nests)
- Usually surrounded by perichondrium (except in articular cartilage) (irregular white fibrous CT)
-
Sites:
- Fetal skeleton
- Epiphyseal plate
- Costal cartilage
- Articular surfaces
- Respiratory passages (e.g., nose, trachea)
Elastic Cartilage
-
Structure:
- Contains elastic fibers in addition to collagen fiber type II
- Matrix less than in hyaline cartilage
- Surrounded by perichondrium
-
Sites:
- Ear pinna
- Eustachian tube
- Epiglottis
- External auditory canal
Fibrocartilage
-
Structure:
- Contains abundant collagen fibers, mainly type I
- No perichondrium
- Cartilage cells are arranged in rows between collagen bundles.
- Matrix is scant
-
Sites:
- Intervertebral discs
- Symphysis pubis
- Mandibular joint
- Sternoclavicular joint
- Acetabulum
Cartilage Cells
- Chondrogenic cells: Mother cells for all cartilage cell types
- Chondroblasts: Immature cartilage cells, located on the cartilage surface and secrete matrix and fibers
- Chondrocytes: Mature cartilage cells, reside in lacunae, secrete matrix, and keep a balance of the matrix.
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Description
Explore the fascinating world of cartilage, a specialized connective tissue vital for support and joint function. This quiz covers the various types of cartilage, including hyaline, elastic, and fibrocartilage, detailing their structures and functions. Test your knowledge on cartilage’s properties and classifications.
