Cartilage Composition and Types

Podcast Beta

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the primary function of the perichondrium in relation to cartilage?

To protect cartilage from mechanical stress

To provide a blood supply for nutrients

To serve as a precursor to bone development

To provide cellular nutrition to cartilage (correct)

Which type of cartilage is primarily involved in forming the temporary skeleton during embryonic development?

Articular cartilage

Elastic cartilage

Hyaline cartilage (correct)

Fibrous cartilage

Which of the following arrangements accurately describes the cells involved in cartilage?

Chondroblasts are mature cells while chondrocytes are immature

Chondrocytes produce cartilage matrix while chondroblasts maintain it

Chondrocytes synthesize collagen while chondroblasts synthesize water

Chondroblasts develop into chondrocytes which maintain the cartilage matrix (correct)

What is the approximate percentage of the dry weight of cartilage composed of fibers?

40% Signup and view all the answers

Which characteristic best describes the nature of cartilage?

Avascular and non-calcified Signup and view all the answers

What type of cartilage allows for flexibility in articular surfaces of joints?

Hyaline cartilage Signup and view all the answers

What is the composition of the matrix in cartilage?

Ground substance and collagen fibers Signup and view all the answers

In what way does cartilage differ from bone in terms of its overall structure?

Cartilage is avascular while bone has a rich blood supply Signup and view all the answers

Which type of cartilage is primarily responsible for the tensile strength and support in areas subjected to pressure?

Fibrous cartilage Signup and view all the answers

What is the primary role of chondronectin in the cartilage matrix?

To assist with cellular adhesion Signup and view all the answers

Which statements accurately describe hyaline cartilage?

It appears as a smooth bluish white, glassy tissue. Signup and view all the answers

What distinguishes fibrous cartilage from the other types of cartilage?

It has collagen fibers arranged in tight parallel bundles. Signup and view all the answers

Where is elastic cartilage typically found?

Pinna of the ear. Signup and view all the answers

How does the matrix of hyaline cartilage compare to that of fibrous cartilage?

Hyaline cartilage has a smooth and solid matrix. Signup and view all the answers

Which of the following locations is NOT typically associated with fibrous cartilage?

Costal cartilages. Signup and view all the answers

What is a key feature of elastic cartilage that sets it apart from others?

It contains elastic fibers in the matrix. Signup and view all the answers

Hyaline cartilage is found in which of the following locations?

Articulating surfaces of bone. Signup and view all the answers

Which type of cartilage is least common?

Elastic cartilage. Signup and view all the answers

What characteristic does fibrous cartilage share with hyaline cartilage?

Both types have a matrix rich in collagen. Signup and view all the answers

Which of the following best describes the repair capability of hyaline cartilage?

It is not easily repaired following injury. Signup and view all the answers

Study Notes

Cartilage Overview

Cartilage is a firm, avascular, non-calcified connective tissue that forms much of the temporary skeleton in embryos and fetuses.
Serves as a model for bone skeletons and is present on articular surfaces of joints, providing flexibility.
The temporomandibular joint (TMJ) is particularly significant in the head and neck, with issues potentially leading to limited movement and discomfort.

Composition and Structure

Cartilage consists of cells (chondroblasts and chondrocytes) and a matrix composed of fibers, collagen, and other intracellular substances.
Chondroblasts create the cartilage matrix; mature chondrocytes maintain it.
The matrix includes a ground substance that is a highly hydrated gel made of proteoglycans, chondronectin, and water.
Fibers in the matrix provide strength and account for 40% of dry weight.

Perichondrium

A fibrous connective tissue sheath called the perichondrium surrounds cartilage and is essential for cellular nutrition.

Types of Cartilage

Hyaline Cartilage:
- The primary type of cartilage, especially in fetuses and infants.
- Composed of small groups of chondrocytes within a smooth, solid matrix; appears as a glassy, bluish-white tissue.
- Location includes articulating surfaces of bones, costal cartilages connecting ribs to the sternum, and the cartilages of the larynx, trachea, and bronchi.
- Notably, it is difficult to repair after injury.
Fibrous Cartilage:
- Dense and slightly flexible, characterized by groups of chondrocytes separated by thick collagen fiber bundles arranged in tight parallel formations.
- Locations include intervertebral discs, knee and jaw joints, and the surrounding rim of bony sockets of the hip and shoulder joints, as well as the pubic symphysis.
Elastic Cartilage:
- Contains elastic fibers in the matrix, making it the least common type of cartilage.
- Locations include the pinna of the ear, epiglottis, and as part of the tunica media in blood vessel walls.

General Function

Different types of cartilage have specialized functions, contributing to overall skeletal function and joint mobility.

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Description

This quiz focuses on the composition, development, and types of cartilage. Students will learn to identify various cartilage types and their locations in the body. Prepare to enhance your understanding of this essential connective tissue!