Fibrous cartilage has lots of collagen fibers Type I and Type II , and it tends to grade into dense tendon and ligament tissue. White fibrocartilage consists of a mixture of white fibrous tissue and cartilaginous tissue in various proportions.
It owes its flexibility and toughness to the fibrous tissue, and its elasticity to the cartilaginous tissue. It is the only type of cartilage that contains type I collagen in addition to the normal type II. Fibrocartilage is found in the pubic symphysis, the annulus fibrosus of intervertebral discs, menisci, and the temporal mandibular joint. Elastic or yellow cartilage contains elastic fiber networks and collagen fibers. The principal protein is elastin.
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.
Chondrocytes lie between the fibers. Elastic cartilage is found in the epiglottis part of the larynx and the pinnae the external ear flaps of many mammals, including humans. Key Takeaways. Key Points Cartilage is a flexible connective tissue that differs from bone in several ways; it is avascular and its microarchitecture is less organized than bone.
Cartilage is not innervated and therefore relies on diffusion to obtain nutrients. This causes it to heal very slowly. The main cell types in cartilage are chondrocytes, the ground substance is chondroitin sulfate, and the fibrous sheath is called perichondrium. There are three types of cartilage: hyaline, fibrous, and elastic cartilage. The picture above is a section of elastic cartilage, stained so that you can see the elastic fibres. For example, the Van Giesen stain stains elastic fibres black.
In elastic cartilage, the chondrocytes are found in a threadlike network of elastic fibres within the matrix. Elastic cartilage provides strength, and elasticity, and maintains the shape of certain structure such as the external ear. It has a perichondrium. Cartilage: The three types of cartilage 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. Cartilage is less dense than bone, yet still provides strength and therefore allows these animals to move quickly through the water without exerting too much effort.
Cartilage is also found in invertebrates , such as horseshoe crabs , snails , and cephalopods predatory mollusks e. The branchial cartilage in the arthropod Atlantic horseshoe crab Limulus polyphemus , is rich in vacuolated chondrocytes that differs from any other arthropod.
Endosternite cartilage is another type found in this species. It is more fibrous than the hyaline cartilage found in vertebrates. It is found near the ventral nerve cords and gill cartilage tissue. In the octopus an example of a cephalopod , the cranial cartilage resembles hyaline cartilage and is one of the only hard parts of the octopus body. The growth of this cartilage occurs via cells moving from the outside to the center.
In the common cuttlefish Sepia officianalis , the cartilage is fibrillar collagen. The growth pattern of this cartilage is essentially the same as in vertebrate cartilage.
In gastropods snails, slugs, or whelks , the odontophore is a cartilage-formed feeding structure that provides feeding support. The odontophore is cell-rich cartilage containing myoglobin that is surrounded by a low volume of extracellular matrix and collagen.
Finally, in the feather duster worms Sabellid polychaetes , cartilage supports their tentacles. Overall, cartilage can be described as a vital structural part of the body found in vertebrates and some invertebrates.
It is a firm but soft tissue that provides support, flexibility, and strength. The importance of cartilage can be seen in hyaline cartilage between joints. Here, as we age, the cartilage thins leading to inflammation and bone rubbing.
Try to answer the quiz below to check what you have learned so far about hyaline cartilage. Read this tutorial to know more about this form of i.. Plants are characterized by having alternation of generations in their life cycles. This tutorial is a review of plant m.. This tutorial elucidates body temperature regulation. Know the details here to learn how the body sets the body temperat..
Myelin sheath is essential for a faster conductivity of signals. Know more about this feature of some neurons in the Cen.. This tutorial elaborates on the physical development of humans, particularly from puberty to adulthood. Read this tutori.. Hormones are chemical messengers produced by specialized glands and they were produced by switching on the genes designe..
Skip to content Main Navigation Search. Dictionary Articles Tutorials Biology Forum. Table of Contents. Biology definition: The hyaline cartilage is a type of cartilage that characteristically has a shiny, white, semi-transparent appearance with a slightly blueish tinge.
It is found in the larynx, trachea, and bronchi. Compare: elastic cartilage, fibrocartilage. Cartilage , i. Hyaline cartilage is the most common type of cartilage. Quiz Choose the best answer. What is hyaline cartilage?
A bony tissue. A tissue that is predominantly made up of ostocytes. A tissue consisting of type II collagen fibers, chondrocytes, and the extracellular matrix. A gelatinous material rich in glycosaminoglycans, proteoglycans, and glycoproteins Type II collagen fibers.
Extracellular matrix. Cells in the hyaline cartilage that produce the cartilaginous matrix Type II collagen fibers. The matrix surrounding each lacuna Capsular matrix.
Territorial matrix. Interterritorial matrix. Which of the following is NOT true about hyaline cartilage? It lacks perichondrium. Your Name. To Email. Time is Up! Meiosis and Alternation of Generations Plants are characterized by having alternation of generations in their life cycles.
Temperature Regulation in Animals This tutorial elucidates body temperature regulation. The Central Nervous System Myelin sheath is essential for a faster conductivity of signals.
Physical Development in Humans This tutorial elaborates on the physical development of humans, particularly from puberty to adulthood. Hormone Production Hormones are chemical messengers produced by specialized glands and they were produced by switching on the genes designe.. Related Articles No related articles found See all Related Topics.
Fetal skeleton until maturation The growth plate at the end of long bones Costal Cartilage at the end of the ribs Nose Larynx Bronchi Articular cartridges. Intervertebral discs Pubic symphysis joint Articular discs in sternoclavicular and temporomandibular joints The glenoid labrum in the shoulder blade The acetabular labrum in the hip joint. Main Collagen Type.
Small, arranged in groups of 2 — 8 cells. Large, arranged in groups of 2 — 4 cells. Small, between bundles of collagen fibers. Arranged in strips. Extracellular Matrix. High in collagen fibers.
0コメント