What cells make up cartilage tissue?

It is made up of cells called chondroblasts and chondrocytes, (chondro – cartilage) and extracellular matrix, made up about 10% aggrecan, 75% water, and a mix of collagen fibres and other constituents. There are three types of cartilage, which differ mostly in the type of fibres they contain.

What organelles are in cartilage cells?

Chondrocytes’ size and shape vary depending on the anatomical layer, but all of them has organelles like endoplasmic retinaculum and Golgi membrane for matrix synthesis. Cytoskeleton of chondrocytes is composed of actin, tubulin and vimentin filaments.

What is the structure of connective tissue cartilage?

Cartilage is a form of connective tissue in which the ground substance is abundant and of a firmly gelated consistency that endows this tissue with unusual rigidity and resistance to compression. The cells of cartilage, called chondrocytes, are isolated in small lacunae within the matrix.

Is cartilage tissue or cells?

connective tissue
Cartilage is a flexible connective tissue that differs from bone in several ways. For one, the primary cell types are chondrocytes as opposed to osteocytes. Chondrocytes are first chondroblast cells that produce the collagen extracellular matrix (ECM) and then get caught in the matrix.

Which of the following is composed of cartilage?

Cartilage is a connective tissue found in many areas of the body including: Joints between bones e.g. the elbows, knees and ankles. Ends of the ribs. Between the vertebrae in the spine.

How cartilage is formed?

Cartilage is formed from the mesoderm germ layer by the process known as chondrogenesis. [5] Mesenchyme differentiates into chondroblasts, which are the cells that secrete the major components of the extracellular matrix—the most important of these components for cartilage formation being aggrecan and type II collagen.

What is cartilage cells?

Cartilage is made up of specialized cells called chondrocytes. These chondrocytes produce large amounts of extracellular matrix composed of collagen fibres, proteoglycan, and elastin fibers. Due to the lack of blood vessels, cartilage grows and repairs more slowly than other tissues.

What is the structure of cartilage?

The matrix of cartilage is made up of glycosaminoglycans, proteoglycans, collagen fibers and, sometimes, elastin. Because of its rigidity, cartilage often serves the purpose of holding tubes open in the body. Examples include the rings of the trachea, such as the cricoid cartilage and carina.

What type of tissue is cartilage?

Cartilage is a non-vascular type of supporting connective tissue that is found throughout the body . Cartilage is a flexible connective tissue that differs from bone in several ways; it is avascular and its microarchitecture is less organized than bone.

What are the components of cartilage?

Cartilage is made up of specialized cells called chondrocytes. These chondrocytes produce large amounts of extracellular matrix composed of collagen fibres, proteoglycan, and elastin fibers. There are no blood vessels in cartilage to supply the chondrocytes with nutrients.

Which protein occurs in cartilage?

Collagen type II
Collagen type II—Collagen type II is the major structural protein in cartilage ECM (∼85%) and the major collagen found in the growth plate during endochondral ossification [61]. It is primarily found in the matrix secreted by the reserve zone chondrocytes.

What type of collagen is present in the matrix of fibrocartilage?

The matrix of fibrocartilage does contain type II collagen and some hyaluronan (of course, there’s also a lot of type I collagen (just because type 1 collagen wasn’t mentioned does NOT make the statement incorrect). 3. Identify the cell whose nucleus is marked by the black arrow. Correct answer 2.

What is the stain used to stain elastic cartilage?

Elastic cartilage Slides 044 and UCSF 053 are from the pinna of the ear stained with aldehyde fuchsin and Masson’s trichrome ( slide 044) or elastic van Gieson’s stain ( UCSF 053 ). In slide 044 stained with aldehyde fuchsin, note the extensive, dark purple elastic fiber network within the cartilage matrix.

How many types of cartilage are there in the body?

Fibrocartilage Be able to recognize the three major cartilage types (hyaline, elastic and fibrocartilage) in light microscopic sections and know where each type is found in the body.

Where is elastic cartilage found in the respiratory system?

Look for the plates of elastic cartilage found just under the glands deep to the respiratory epithelium. Observe that there are chondrocytes within lacunae just as in hyaline cartilage, but note the eosinophilic, fibrillar matrix due to the presence of elastic fibers.