In definition, perichondrium is a dense layer of fibrous connective tissue that covers cartilage in the body while periosteum is a thin layer of connective tissue that covers the bone and promotes bone growth and development. Periosteum-a membrane that lines the outer surface of all bones, except at the joints of long bones.
What is the function of perichondrium and periosteum?
Generally, perichondrium is present in the nose, hyaline cartilage in larynx and trachea, elastic cartilage in ear, etc. Periosteum is present in the surfaces of bone tissue. Besides these, the primary function of perichondrium is to cover cartilage to protect the bones from injury.
What is perichondrium made of?
The perichondrium is a fibrous connective tissue. It is a dense layer that covers cartilage in the body. Hence, perichondrium is present in most parts of the body. It is made out of two layers: outer fibrous layer and inner chondrogenic layer. The outer fibrous layer contains collagen-producing fibroblast cells.
What happens if the perichondrium is damaged?
Damage to the perichondrium is known as perichondritis, and can result from cartilage injuries. This often occurs from microtraumas such as piercings, insect bites, or burns to the perichondrium tissue, leading to inflammation and, sometimes, infection.
What is the difference between the fibrous and osteogenic periosteum?
The fibrous periosteum is the outermost layer to the bone. It contains densely packed blood vessels, nerve endings, and lymphatics. Blood vessels enter the tissue via Volkmann canals in the fibrous periosteum. It also serves as a location where skeletal muscles attache to the bone. The osteogenic periosteum is the innermost layer to the bone.
Is periosteum a perichondrium?
The key difference between perichondrium and periosteum is that perichondrium is the dense membrane of connective tissue that covers cartilages while periosteum is the membrane that covers all the bones in the body. Perichondrium and periosteum are two types of connective tissues present in the body.
What is the perichondrium?
Perichondrium is a type of connective tissue, and also functions in the growth and repair of cartilage. Once vascularized, the perichondrium becomes the periosteum. [
Where is the perichondrium and what is its function?
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.
What is the periosteum also known as?
The periosteum that covers the outer surface of the bones of the skull is known as the pericranium, except when in reference to the layers of the scalp.
Is perichondrium a part of cartilage?
The perichondrium is a dense layer of fibrous connective tissue that covers cartilage in various parts of the body. Perichondrium tissue commonly covers these areas: elastic cartilage in parts of the ear.
What cells are found in the periosteum?
Periosteum and endosteum contain cells (osteoblasts, osteoclasts, and osteoprogenitor cells) required for bone development and remodeling of the bone.
What is the importance of the perichondrium that surrounds cartilage?
What is the importance of the perichondrium that surrounds cartilage? It functions in growth and repair of cartilage. It resists outward expansion when cartilage is subjected to pressure.
Which type of cartilage has a perichondrium?
hyaline cartilageElastic cartilage (like hyaline cartilage) has chondrocytes located in lacunae and the tissue is surrounded by a perichondrium .
What are the two layers of periosteum?
Periosteum can be thought of as consisting of two distinct layers, an outer fibrous layer and an inner layer that has significant osteoblastic potential.
What are 3 functions of the periosteum?
The periosteum is known to have three roles: (1) a source of osteocytes/chondrocytes that differentiate from pluripotent undifferentiated mesenchymal cells, (2) a scaffold for the proliferation of osteocytes/chondrocytes, and (3) a source of growth factors.
What is periosteum made of?
Periosteum layers It's made of thick collagen fibers. Most of the periosteum's blood vessels and nerves are in the outer layer. The inner layer (sometimes called the cambium layer) contains the osteoprogenitor cells and the osteoblasts they create when your bone is growing or needs to heal.
What are some interesting facts about Perichondrium?
What are the most important facts to know about perichondrium? The perichondrium is a dense layer of fibrous connective tissue that covers the surface of most of the cartilage in the body. The perichondrium consists of an outer fibrous layer that contains fibroblasts and an inner chondrogenic layer that contains chondroblasts.
Which layer of the perichondrium contains cartilage producing cells?
Additionally, the inner layer of the perichondrium contains cartilage -producing cells, known as chondroblasts, which enable cartilage to grow. Chondroblasts secrete a substance called the extracellular matrix, which contains various components that provide structure and strength to cartilage. In addition, chondroblasts mature into chondrocytes, ...
What is the damage to the perichondrium?
Damage to the perichondrium is known as perichondritis, and can result from cartilage injuries. This often occurs from microtraumas such as piercings, insect bites, or burns to the perichondrium tissue, leading to inflammation and, sometimes, infection. Symptoms can include pain, redness, and swelling, which may require medical treatment.
What is the layer of connective tissue that covers the external surface of most of the body's cartilage?
The perichondrium is a dense layer of connective tissue that covers the external surface of most of the body’s cartilage (a strong, flexible, and semi-rigid tissue found throughout the body).
What is the role of the periosteum in bone growth?
In doing so, the periosteum promotes the development and growth of the bones, while the perichondrium promotes the development and growth of cartilage. The periosteum assists bone growth by facilitating the supply of blood and nutrients to bone tissue. Both types of tissue also provide protection from bone injury, although through different means.
What does it mean when your ear is cauliflower?
Symptoms can include pain, redness, and swelling, which may require medical treatment. Serious ear trauma leading to diminished blood flow from the perichondrium to the cartilage can lead to a puffy, cauliflower-like appearance, and is commonly referred to as cauliflower ear. This condition may require medical treatment, ...
Which connective tissue covers all bones in the body?
The perichondrium is a dense layer of fibrous connective tissue that covers many types of cartilage in the body, whereas the periosteum is a thin layer of membranous connective tissue that covers all bones in the body.