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Joints

http://www.bbc.co.uk/science/humanbody/body/factfiles/joints/ball_and_socket_joi nt.shtml

A joint is formed when two or more bones come into contact

Types of joints

Joints are divided into 3 groups according to their degree of movement.

  1. Immovable joints such as the bones of the skull (known as sutures) which are fused.
  2. Partly movable joints have cartilage between them which allows for a small degree of movement e.g. between the vertebrae also called cartilaginous joints .
  3. Synovial joints are freely movable and are divided into 4 groups
  • Hinge joints - e.g elbow and knee joints which allow movement in one plane only
  • Ball and Sock et joints - e.g. shoulder and hip joints allows free movement in almost all directions.
  • Pivot joint - between atlas and axis vertebrae – allows for turning movement of head
  • Gliding joints - between ankle bones and wrist bones – allows for rotational movements of hands and feet

Structure of synovial joint

  • The joint is completely enclosed in a bag-like joint capsule forming a synovial cavity.
  • The joint capsule is lined by a synovial membrane which secretes synovial fluid filling the entire cavity thereby reducing friction
  • The ends of the bones are covered in hya l ine articular cartilage
  • In addition to the joint capsule, other ligaments are present which attach bones to each other

SYNOVIAL JOINT

Questions & Answers

Application of nanotechnology in medicine
what is variations in raman spectra for nanomaterials
Jyoti Reply
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Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
yes that's correct
Professor
I think
Professor
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
LITNING Reply
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LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
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Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
if virus is killing to make ARTIFICIAL DNA OF GRAPHENE FOR KILLED THE VIRUS .THIS IS OUR ASSUMPTION
Anam
analytical skills graphene is prepared to kill any type viruses .
Anam
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
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Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
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Adin
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Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
research.net
kanaga
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Ernesto
Introduction about quantum dots in nanotechnology
Praveena Reply
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Loga
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nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
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SUBHIKSHA
Comment on the ozone depletion over the period of 1982 to 1996
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Source:  OpenStax, Siyavula: life sciences grade 10. OpenStax CNX. Apr 11, 2012 Download for free at http://cnx.org/content/col11410/1.3
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