JOINTS AND MOVEMENT

Biology

JOINTS AND MOVEMENT

  • A joint is a connection between two or more bones.
  • Joints provide articulation between bones making movement possible.
  • However some joints do not allow any movement e.g. the joints, between bones of the skull.

Movable joints are of three main types:

Gliding joint

  • g., joints which occur between the vertebrae wrists and ankles.
  • The ends of the bones that make the joint are covered with cartilage.
  • The bones are held together by tough ligaments.
See also  ECOLOGY

Synovial joint

  • The joint is enclosed by fibrous capsule lined by synovial membrane which secretes synovial fluid into the synovial cavity.
  • The synovial fluid lubricates the joint.
  • They are called synovial joints.
  • They include hinge joint and ball and socket joint.

Hinge joint

  • g. knee joint.
  • The joint allows movement in one plane. Ball and socket joint.
  • g., hip joint.
  • The joint allows rotation in all directions.
See also  GROWTH AND DEVELOPMENT

See also:

MAMMALIAN SKELETON

SUPPORT AND MOVEMENT IN ANIMALS

SUPPORT AND MOVEMENT IN PLANTS

STRUCTURE AND FUNCTIONS OF PARTS OF HUMAN EAR

STRUCTURE AND FUNCTION OF PARTS OF THE HUMAN EYE

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