define and explain perichondrium
Answers
Answer:
The perichondrium is a layer of dense irregular connective tissue that surrounds the cartilage of developing bone. It consists of two separate layers: an outer fibrous layer and inner chondrogenic layer. The fibrous layer contains fibroblasts, which produce collagenous fibres. The chondrogenic layer remains undifferentiated and can form chondroblasts. Perichondrium can be found around the perimeter of elastic cartilage and hyaline cartilage.
Perichondrium is a type of irregular collagenous ordinary connective tissue, and also functions in the growth and repair of cartilage. Perichondrium contains type I collagen and type XII collagen.
Perichondrium is a dense, irregular connective tissue which surrounds the cartilage of developing bone. It consists of two layers- a fibrous outer layer which contains fibroplasts that produce collagen, and an inner chondrogenic layer which is made of fibroplasts which produce chondroblasts and chondrocytes (cartilage cells). The perichondrium acts as a protective layer for the bone and cartilage, especially for children who are still growing. The fibrous layer of the perichondrium allows rich blood flow in these ares, which ensures that the cartilage is well-supplied with essential nutrients and oxygen. Some places where perichondrium is present include the cartillage of the ear, nose, in the epiglottis and at the connection between your breastbone (sternum) and ribs.
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