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

Long-term follow-up results , Long-term Follow-up Results :  To evaluate t...

Long-term Follow-up Results :  To evaluate the long-term results of surgery, one has to take into consideration the natural history, results of medical treatment and that of PTCA.

Which is the brain region responsible for the coordination, Which is the br...

Which is the brain region responsible for the coordination and equilibrium of the body? In the central nervous system the cerebellum is the main controller of the motor coordin

Define fat requirements in human body, Define Fat requirements in human bod...

Define Fat requirements in human body? There is no change in fat digestibility at altitude of

Cloning protocol, Sally Subcloner wants to clone a fragment into pUC19 (Map...

Sally Subcloner wants to clone a fragment into pUC19 (Map above – From New England Biolabs). Her fragment was a protein coding gene of 2.7 kb, and had XhoI sites on either end (and

What is meant by post-translational modification, What is meant by "post-tr...

What is meant by "post-translational modification"? Give examples of post-translational modifications of the following amino acids: a. Serine b. Lysine C. Choose a third amino acid

Attempted suicide - psychiatric emergencies, Attempted Suicide: Suicid...

Attempted Suicide: Suicide and homicide represent major source of morbidity and mortality in psychiatric practice.  Suicide means killing of  oneself.  An attempted suicide is

What are the catalysts, Q. What are the catalysts? Catalysts are substa...

Q. What are the catalysts? Catalysts are substances that decrease the activation energy of a chemical reaction, facilitating it or making it energetically viable. The catalyst

Describe the nature of the enzymes, Describe the nature of the enzymes invo...

Describe the nature of the enzymes involved in the phosphorylation of glucose Phosphorylation of glucose: Glucose is converted to glucose-6-phosphate since phosphorylated inter

Contagious bovine pleuropneumonia (cbpp), Contagious bovine pleuropneumonia...

Contagious bovine pleuropneumonia (CBPP) This is a highly infectious disease and is of major economic importance in certain tropical countries. The causative organism is Mycop

The cell, how does autophagy help in converting a tadpole larva into an adu...

how does autophagy help in converting a tadpole larva into an adult amphibian

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