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| ===Length=== | | ===Length=== |
− | *The '''epiphyseal growth plate (EPG)''' allows the [[Bones and Cartilage - Anatomy & Physiology#Types of Bone|bone]] to continue to grow in length after birth.
| + | The '''epiphyseal growth plate (EPG)''' allows the [[Bones and Cartilage - Anatomy & Physiology#Types of Bone|bone]] to continue to grow in length after birth. The EPG is a region of continuous chondroblast differentiation and maturation and can be divided into five zones: |
− | *The EPG is a region of continuous chondroblast differentiation and maturation.
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− | *The EPG is divided into five zones:
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− | #'''Germinal Zone''' - chondroblast division at a low rate, and self renewal.
| + | 1.'''Germinal Zone''' - chondroblast division at a low rate, and self renewal. |
− | #'''Proliferation Zone''' - chondroblast division at a fast rate.
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− | #'''Maturation Zone''' - chondroblast differentiation into chondrocytes.
| + | 2.'''Proliferation Zone''' - chondroblast division at a fast rate. |
− | #'''Hypertrophic Zone''' - chondrosytes enlarge and then die.
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− | #'''Dead cells''' become the matrix for bone growth.
| + | 3.'''Maturation Zone''' - chondroblast differentiation into chondrocytes. |
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| + | 4.'''Hypertrophic Zone''' - chondrosytes enlarge and then die. |
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| + | 5.'''Dead cells''' become the matrix for bone growth. |
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| ===Girth=== | | ===Girth=== |