How is cartilage differentiated?
How is cartilage differentiated?
Differentiation of cartilage cells from embryonic precursor cells is characterized by the onset of biosynthesis of at least two cartilage-specific gene products, type II collagen and cartilage-specific chondroitin sulfate proteoglycan (CSPG).
What are the special characteristics of cartilage?
Cartilage is thin, avascular, flexible and resistant to compressive forces. Bone is highly vascularised, and its calcified matrix makes it very strong.
Which is a characteristic of cartilage connective tissue?
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.
How can we differentiate between the three types of cartilage tissues?
There are three types of cartilage:
- Hyaline – most common, found in the ribs, nose, larynx, trachea. Is a precursor of bone.
- Fibro- is found in invertebral discs, joint capsules, ligaments.
- Elastic – is found in the external ear, epiglottis and larynx.
Which feature is typical of elastic cartilage?
Elastic cartilage is histologically similar to hyaline cartilage but contains many yellow elastic fibers lying in a solid matrix. These fibers form bundles that appear dark under a microscope. They give elastic cartilage great flexibility so it can withstand repeated bending.
How can you distinguish elastic cartilage from the other types of cartilage microscopically?
Main Differences
| Hyaline Cartilage | Elastic Cartilage |
|---|---|
| ü Appears translucent/grey in color/glossy | ü Has a yellow appearance |
| ü Contains large amounts of collagen | ü Laden with elastic fibers |
What is the difference between bones and cartilage?
The main difference between bone and cartilage are listed below. Bones are the hard, inelastic and a tough organ that forms part of the vertebral skeleton. Cartilage is a soft, elastic and flexible connective tissue that protects the bone from rubbing against each other.
What are the characteristics that distinguish the lacunae and matrix of elastic cartilage?
When stained, the main components of elastic cartilage appear dark blue. Meanwhile, the lacunae (cavities) that are surrounded by matrix appear lighter. The blue elastic fibers are most visible around the edges of the cartilage, and appear elongated in shape.
What are the main characteristics of connective tissue?
Connective tissues come in a vast variety of forms, yet they typically have in common three characteristic components: cells, large amounts of amorphous ground substance, and protein fibers.
What is the difference between elastic tissue and elastic cartilage?
The main difference between elastic cartilage and elastic connective tissue is that the elastic cartilage contains a polysaccharide called chondroitin sulfate whereas the elastic connective tissue does not contain chondroitin sulfates.
Which of the following best describes the characteristics of fibrocartilage?
characteristics. Fibrocartilage is the tough, very strong tissue found predominantly in the intervertebral disks and at the insertions of ligaments and tendons; it is similar to other fibrous tissues but contains cartilage ground substance and chondrocytes.
What are the characteristics of elastic cartilage?
characteristics. Elastic cartilage, which is yellow in appearance, is more pliable than the other two forms because it contains elastic fibres in addition to collagen. In humans it makes up the external ear, the auditory tube of the middle ear, and the epiglottis.
What type of collagen is in cartilage?
Fibers: Cartilage is composed of collagen and elastic fibers. In hyaline cartilage, type II collagen makes up 40% of its dry weight. Elastic cartilage also contains elastic fibers, and fibrocartilage contains more collagen than hyaline cartilage.
What do you mean by cartilaginous tissue?
1 Definition. Cartilaginous tissue, or simply cartilage, is a type of connective tissue formed by specialized cells ( chondrocytes) and extracellular basic substance. 2 Prevalence. Cartilaginous tissue is present in many locations of the human body. 3 Histology. 4 Biomechanics. 5 Clinical presentation.
What is the composition of the cartilaginous matrix?
The cartilaginous matrix has a high proportion of water of up to 70%, and it has almost no blood vessel and nerves. Its main components are collagens, elastin, and proteoglycanes, whose total proportion and exact composition differs according to the type of cartilage.
What is the most abundant cartilage in the human body?
Hyaline Cartilage: Hyaline cartilage is the most abundant type of cartilage. Hyaline cartilage is found lining bones in joints (articular cartilage). It is also present inside bones, serving as a center of ossification or bone growth. In addition, hyaline cartilage forms the embryonic skeleton.