Skeletal tissues - cartilage, Biology

Assignment Help:

SKELETAL TISSUES -

  1. These connective tissues form the endoskeleton of the vertebrates.
  2. These support the body, protect the various organs and help in locomotion.
  3. Skeletal tissues include cartilage and bone.

CARTILAGE -

  1. Cartilage is a soft skeletal tissue.
  2. It is not rigid like bone.
  3. It is found more abundantly in vertebrate embryoes because most of the bones forming skeleton of the adult are cartilaginous in the early stage.
  4. The cartilages are of three types.

(a) Hyaline cartilage

  1. It contains clear, large amount of translucent, slightly elastic matrix with less fibres.
  2. The matrix often has very fine white fibres which are difficult to observe.
  3. It forms articular surfaces at the joints of long bones, where it is called articular cartilage.
  4. It also forms part of larynx and sternum, rings of trachea and bronchi, sternal parts of ribs, hyoid apparatus and nasal cartilages.
  5. Most of the embryonic skeleton consists of hyaline cartilage.
  6. Hyaline cartilage forms the skeleton of elasmobranch fishes and the embryonic skeleton in bony vertebrates.

2338_fibro cartilage.png

(b) Fibrous cartilage -

  1. It has well developed fibres in the matrix.
  2. It is of two types -

(i)  White Fibrous Cartilage or White Fibrocartilage -

  1. The matrix is firm and has abundant white fibres.
  2. It occurs in the intervertebral discs where it acts as cushion and in the pubic symphysis where it helps in parturition.
  3. White fibrous cartilage is the strongest cartilage. (ii) Yellow Elastic Fibrocartilage -
  4. The matrix contains numerous yellow fibres.
  5. Due to the presence or yellow fibres, the cartilage becomes more flexible.
  6. This type of cartilage is found in the pinna and external auditory canal of the ear, Eustachian tubes, epiglottis and tip of the nose. It makes these organs flexible.

1064_hyaline cartilage.png

(c) Calcified cartilage -

  1. Sometimes matrix contains granules of calcium crabonate, then the cartilage is called calcified cartilage.
  2. Calcium carbonate makes the cartilage hard and inelastic.
  3. This cartilage is found in suprascapula of pectoral girdle of frog and vertebrae of shark.

Related Discussions:- Skeletal tissues - cartilage

What is a prion, Q. What is a prion? The prion is an infectious (transm...

Q. What is a prion? The prion is an infectious (transmissible) protein able to replicate by transforming other proteins into a copy of the prion. The mechanism of the copying i

How to explain the high level of radiation resistance, Deinococcus radiodur...

Deinococcus radiodurans is a bacterium that was isolated from cooling ponds in and around nuclear power plants. It is highly resistant to ionizing radiation. Propose a hypothesis t

Explain ailing implant, Explain Ailing Implant Which may indicate an in...

Explain Ailing Implant Which may indicate an increased risk for failure, which can be of temporary significance or amenable to treatment and is generally a soft tissue aberrati

What are the common changes in the eye, What are the common changes in the ...

What are the common changes in the eye Other changes in the eye are: 1) Increase in curvature of anterior surface of lens. 2) Anterior pole of lens moves forwards without

Importance of counselling for diabetic patient, Q. Importance of counsellin...

Q. Importance of counselling for diabetic patient? Diabetes is a life-long illness. Life style modification and precautions taken by the patient can prevent complications and i

Principles of binomial nomenclature, Q. Principles of Binomial Nomenclature...

Q. Principles of Binomial Nomenclature? There are certain, basic principles of binomial nomenclature which are as follows: i) Different nomenclatural systems are independent

Species diversity-structure of community, Species diversity An importan...

Species diversity An important attribute of a community is its species diversity. The diversity is calculated both by the number of species (richness) and the relative abundanc

Applied Biology, Which of the branches of applied biology ?

Which of the branches of applied biology ?

How to improve natural history with congenital heart disease, How to improv...

How to improve natural history of adults with congenital heart disease? Improving the natural history of adults with CHD: As mentioned above the populations of adults with CH

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd