BIO MECHANICS- 2MARKS- PART-4

ZYGAPOPHYSEAL JOINTS:

  • The facet joints, (or zygapophysial joints, zygapophyseal, apophyseal, or Z-joints) are a set of synovial, plane joints between the articular processes of two adjacent vertebrae.
  • The Facet Joints, also known as the Zygapophyseal Joints, are located closer to the back of the spine, where they project above and below the vertebral arch.
  • These joints also allow for movement of the spine, as well as providing for stability of the overall structure.

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BIO MECHANICS- 2MARKS- PART-3

FIBRO CARTILAGE:

  • Fibrocartilaginous and hyaline joints, usually occurring in the midline. Examples in human anatomy would be the manubriosternal joint (between the manubrium and the sternum), intervertebral discs, and the pubic symphysis.
  • Fibrocartilage(fibrous) is a type of cartilage that contains fine collagen fibers arranged in layered arrays. In contrast to the very uniform appearance of hyaline cartilage, fibrocartilage possesses a more open or spongey architecture with gaps between lacunae and collagen fiber bundles.

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BIO MECHANICS- 2MARKS- PART-2

DIARTHROSIS:

  • A synovial joint, also known as diarthrosis, joins bones with a fibrous joint capsule that is continuous with the periosteum of the joined bones, constitutes the outer boundary of a synovial cavity, and surrounds the bones’ articulating surfaces. The synovial cavity/joint is filled with synovial fluid.
  • Example: knee joint and most of the joints of the limbs.

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BIOMECHANICS-2 MARKS-PART-1

CENTRE OF GRAVITY:

  • Center of gravity is an imaginary balancing point where the body weight can be assumed to be concentrated and equally distributed.
  • Its symbol is COG or CG. The centre of gravity (COG) of the human body is a hypothetical point around which the force of gravity appears to act.
  • In the anatomical position, the COG lies approximately anterior to the second sacral vertebra.

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