Seeleys Anatomy and Physiology Chapter 6 Skeletal System (not done)

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Penetrates the outer layer of the perichondrium but do not enter the cartilage matrix:

Blood vessels and nerves

Perichondrium

A double layered connective tissue sheath covering most cartilage.

Ligaments

Attach bone to bone

Ligaments

Attach bone to muscle

3 types of Cartilage

1. Hyaline cartilage 2. Fibrocartilage 3. Elastic cartilage

5 Functions of the Skeletal System

1. Support 2. Protection 3. Movement 4. Storage 5. Blood cell Production

When a matrix surrounds a chondroblast it becomes:

A chondrocyte

Perichondrium

A double layered connective tissue sheath covering most cartilage

Chondrocyte

A rounded cell that occupies a space called a lacuna within the matrix.

Lacuna

A rounded cell that occupies a space within the matrix

Appositional growth

Add new cartilage to the outside edge of the existing cartilage, chondroblasts lay down new matrix and add new chondrocytes to the outside of the tissue

Interstitial growth

Chondrocytes within the tissue divide and add more matrix between the existing cells

What provides strength in the matrix:

Collagen

What type of tissue is the perichondrium

Dense irregular connective tissue (containing fibroblasts)

Inner layer of pericardium (called the visceral layer) contains:

Fewer fibers and chondroblasts

Cartilage intimately associated with bone:

Hyaline cartilage

Proteoglycans

Make cartilage resilient by trapping water (in the matrix)

Proteoglycans

Makes cartilage resilient by trapping water

Diffuses through the cartilage matrix to reach chondrocytes:

Nutrients

Chondroblasts

cartilage-forming cells

articular cartilage

covers the surfaces of bones where they come together to form joints (hyaline cartilage)


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