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

Population, Population was defined by Clarke in 1954. The term populat...

Population was defined by Clarke in 1954. The term population refers to the total number of individuals of a sp. occupying a particular geographic aera at a given time. A s

Codeine, CODEIN E - It is methylmorphine, obtained from opium. I...

CODEIN E - It is methylmorphine, obtained from opium. It is used in cough syrups. A notable side effect of codeine is constipation.

Developmental concepts unique to infants and young children, Developmental ...

Developmental Concepts Unique to Infants and Young Children The cognitive and social emotional development of infants and very young children has unique features. This age rang

Genetically modified foods-tomatoes, Normal 0 false false f...

Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4

Phylum annelida, what so special for phylum annelida

what so special for phylum annelida

What are biopolymers, Q. What are biopolymers? Polymers are macromolecu...

Q. What are biopolymers? Polymers are macromolecules made by the union of several smaller identical molecules, called monomers. Biopolymers are polymers present in the living b

What is oral hygiene, What is Oral Hygiene  An index can be used to eva...

What is Oral Hygiene  An index can be used to evaluate the oral hygiene level in the patient e.g. Oral hygiene Index (Green and vermilion) or Plaque index (Silness and Loe). An

Define instrument for measurement of absorbed radiation, Define Instrument ...

Define Instrument for Measurement of Absorbed Radiation? a) Photometer: This is an instrument which it designed to measure the intensity of the beam of light and usually does s

Phylem porifera, please give us this phylem''s example...

please give us this phylem''s example...

Metabolism, What is Metabolism ?  The  sum total of vital activities ( ...

What is Metabolism ?  The  sum total of vital activities ( movements , nutrition, growth, respiration, excretion , reproduction, behaviour ,etc.  Is the  life  of a living  bei

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