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Questions and Answers
What is the principal type of cartilage found in fetuses and infants?
Which characteristic is NOT true about hyaline cartilage?
Where can you find fibrous cartilage?
What unique feature does elastic cartilage have compared to other types of cartilage?
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Which of the following locations would NOT contain hyaline cartilage?
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What is the composition difference between fibrous cartilage and hyaline cartilage?
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Which of the following locations is associated with elastic cartilage?
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What type of cartilage is predominantly found in knee joints?
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What is the least common type of cartilage tissue?
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What specific characteristic distinguishes hyaline cartilage from fibrous cartilage?
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What is the primary function of cartilage in the embryo and foetus?
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Which type of cartilage is the most common and serves as a precursor to bone?
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What is the role of chondrocytes in cartilage tissue?
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What substance makes up the majority of the matrix in cartilage?
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What surrounds cartilage and provides it with cellular nutrition?
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In which part of the body is the TMJ (temporomandibular joint) cartilage especially important?
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Which type of cartilage provides flexibility and strength due to its elastic fibers?
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What percentage of the dry weight of cartilage is made up of fibers?
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Which cellular component is responsible for the production of cartilage matrix?
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What differentiates the types of cartilage in terms of their matrix composition?
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Study Notes
Cartilage Overview
- Firm, avascular, non-calcified connective tissue crucial for skeletal development.
- Forms temporary skeleton in embryos and fetuses, acting as a model for future bones.
- Present on articular surfaces of joints, contributing to flexibility and shock absorption.
Importance of TMJ
- TMJ (temporomandibular joint) cartilage is vital for head and neck function.
- Issues with TMJ can lead to limited opening and discomfort in patients.
- Nutritional support for cartilage is derived from surrounding connective tissue known as perichondrium.
Structure of Cartilage
- Composed of chondroblasts (immature cells producing matrix) and chondrocytes (mature cells maintaining matrix).
- Matrix consists of fibers (primarily collagen) and a ground substance that is gel-like, rich in proteoglycans and water.
- Perichondrium serves as a fibrous capsule surrounding cartilage.
Types of Cartilage
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Hyaline Cartilage:
- Most prevalent type, especially in fetuses and infants.
- Smooth, bluish-white appearance; difficult to repair after injury.
- Locations: articulating surfaces of bones, costal cartilages (ribs to sternum), larynx, trachea, bronchi.
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Fibrous Cartilage:
- Dense, tough, slightly flexible, characterized by thick collagen fiber bundles.
- Groups of chondrocytes are separated by collagen, arranged in parallel bundles.
- Locations: intervertebral discs, knee and jaw joints, rim of hip and shoulder sockets, pubic symphysis.
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Elastic Cartilage:
- Contains additional elastic fibers in the matrix, creating structural flexibility.
- The least common type among the cartilages.
- Locations: pinna of the ear, epiglottis, parts of blood vessel walls (tunica media).
General Functions of Cartilage
- Provides structural support and flexibility in various parts of the body.
- Acts as a cushion in joints, reducing friction and absorbing shock.
- Aids in the development and growth of long bones, serving as a template during early stages.
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Description
This quiz focuses on the composition, types, and functions of cartilage. Students will learn to identify different types of cartilage and understand their specific roles in the body. Engage with key concepts to enhance your understanding of this vital tissue.
