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Articulations and Body Movements

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Terms in this set (21)

  • What type of joint is the intervertebral disc?
    The intervertebral disc is a cartilaginous joint, specifically a symphysis, allowing slight movement and acting as a shock absorber between vertebrae.
  • What type of joint is the pubic symphysis?
    The pubic symphysis is a cartilaginous symphysis joint that connects the two pubic bones with fibrocartilage, allowing limited movement.
  • What type of joint is the tibiofemoral (knee) joint?
    The tibiofemoral joint is a synovial hinge joint that allows flexion and extension with some rotation.
  • What is the function of the lateral meniscus in the knee?
    The lateral meniscus acts as a shock absorber and stabilizer between the femur and tibia on the outer side of the knee.
  • What is the function of the medial meniscus in the knee?
    The medial meniscus cushions and stabilizes the inner side of the knee joint between the femur and tibia.
  • What role does the tibial ligament play in the knee joint?
    The tibial ligament stabilizes the medial side of the knee, preventing excessive side-to-side movement.
  • What role does the fibular ligament play in the knee joint?
    The fibular ligament stabilizes the lateral side of the knee, limiting lateral displacement.
  • What is the function of the anterior cruciate ligament (ACL)?
    The ACL prevents the tibia from sliding forward relative to the femur and provides rotational stability.
  • What is the function of the posterior cruciate ligament (PCL)?
    The PCL prevents the tibia from sliding backward relative to the femur.
  • Define flexion in joint movements.
    Flexion is a movement that decreases the angle between two bones, typically bending a joint.
  • Define extension in joint movements.
    Extension is a movement that increases the angle between two bones, straightening a joint.
  • What is abduction in terms of body movement?
    Abduction is the movement of a limb away from the midline of the body.
  • What is adduction in terms of body movement?
    Adduction is the movement of a limb toward the midline of the body.
  • What does rotation mean in joint movement?
    Rotation is the movement of a bone around its longitudinal axis.
  • What is circumduction?
    Circumduction is a circular movement that combines flexion, extension, abduction, and adduction.
  • Define pronation.
    Pronation is the rotation of the forearm so the palm faces downward or backward.
  • Define supination.
    Supination is the rotation of the forearm so the palm faces upward or forward.
  • What is inversion of the foot?
    Inversion is the movement of the sole of the foot inward toward the midline.
  • What is eversion of the foot?
    Eversion is the movement of the sole of the foot outward away from the midline.
  • Define dorsiflexion.
    Dorsiflexion is the movement that decreases the angle between the dorsum (top) of the foot and the leg.
  • Define plantar flexion.
    Plantar flexion is the movement that increases the angle between the dorsum of the foot and the leg, pointing the toes downward.