Podcast
Questions and Answers
What type of fibers is primarily found in hyaline cartilage?
What type of fibers is primarily found in hyaline cartilage?
Cartilage is a vascular tissue.
Cartilage is a vascular tissue.
False
Name one function of cartilage.
Name one function of cartilage.
Support
Hyaline cartilage is found at the ______ surfaces of joints.
Hyaline cartilage is found at the ______ surfaces of joints.
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Match the type of cartilage with its site of occurrence:
Match the type of cartilage with its site of occurrence:
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Which type of cartilage is characterized by elastic fibers?
Which type of cartilage is characterized by elastic fibers?
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Chondrocytes are immature cartilage cells that secrete the cartilage matrix.
Chondrocytes are immature cartilage cells that secrete the cartilage matrix.
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What is the composition of the ground substance in cartilage?
What is the composition of the ground substance in cartilage?
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Yellow elastic cartilage can be found in the ______.
Yellow elastic cartilage can be found in the ______.
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Which of the following is NOT a location where hyaline cartilage can be found?
Which of the following is NOT a location where hyaline cartilage can be found?
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Study Notes
Cartilage Overview
- Cartilage is a specialized connective tissue (CT) that lacks blood vessels (avascular).
- Its matrix is firm or rubbery, promoting resilience.
- Cartilage provides support, keeps airways open, provides smooth joint surfaces, and acts as a shock absorber.
Learning Objectives
- Define cartilage
- Classify cartilage types
- Identify cartilage locations in the human body
- Understand cartilage microstructure
Cartilage Cells
- Chondrogenic cells are the mother cells for all cartilage cell types.
- Chondroblasts are immature cartilage cells found on the cartilage surface and perichondrium. They produce the cartilage matrix and fibers.
- Chondrocytes are mature cartilage cells, completely surrounded by their secreted matrix and housed within lacunae. They are often clustered in groups of 2, 4, or 8 (cell nests).
Cartilage Fibers
- Cartilage fibers include collagen and elastic fibers, varying based on cartilage type.
Cartilage Matrix (Ground Substance)
- The cartilage matrix is rubbery and basophilic.
- It's composed of glycosaminoglycans (GAGs), glycoproteins, and water.
Types of Cartilage
- Hyaline Cartilage: Contains collagen fiber type II. Found in fetal skeletons, epiphyseal plates, costal cartilages, articular surfaces, and respiratory passages (e.g., nose, trachea).
- Yellow Elastic Cartilage: Contains elastic fibers. Located in the ear pinna, Eustachian tube, epiglottis, and external auditory canal.
- White Fibrocartilage: Contains collagen fiber type I. Found in intervertebral discs, symphysis pubis, mandibular joint, sternoclavicular joint, and acetabulum (e.g., femur head).
Hyaline Cartilage Structure
- Surrounded by perichondrium (except articular surfaces).
- Contains collagen type II fibers.
- Has a significant amount of basophilic matrix produced by chondroblasts.
Yellow Elastic Cartilage Structure
- Contains perichondrium.
- Has elastic fibers within the matrix.
- Matrix amount is less than in hyaline cartilage.
White Fibrocartilage Structure
- Lacks perichondrium.
- Contains collagen type I fibers in thick, parallel bundles.
- Cartilage cells are arranged in rows between the bundles.
- The matrix is very scant.
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Description
This quiz covers the essential concepts of cartilage, a specialized connective tissue. It explores its types, locations in the human body, and microstructure, including the roles of different cartilage cells. Test your knowledge on cartilage's functions and its fibrous composition.
