questions and answers 2024-2025
how is joint stability affected by range of movement? - joint stability decreases as
mobility increases and vice versa
what are the 3 functional classifications of joints? - immovable, slightly moveable,
and synovial
what are the 4 major components of a synovial joint? - 1.contains a cavity 2.
surrounded by connective tissue capsule 3. inner surface of capsule is lined by a
synovial membrane 4. articular surfaces covered with articular cartilage
4 accessory structures of synovial joints? - 1.cartilage 2. ligaments 3. tendons 4.
bursae
where are synovial joints found? - at the ends of long bones
when you are in anatomical position, all major joints are ______ - extended and
adducted
what is an axis - a straight line about which the body rotates
Flexion - reduces the angle between 2 bones
Extension - increases angle between 2 bones
Dorsiflexion - Extension at ankle (flexing of foot)
Plantar Flexion - Flexion at ankle (pointing foot)
Lateral Flexion - bends vertebral column from side to side
Abduction - (in frontal plane) moves away from your central axis
Adduction - (in frontal plane) moves toward your central axis
, medial rotation - rotates toward your central axis
lateral rotation - rotates away from central axis
pronation - rotates forearm- radius over ulna
supination - forearm in anatomical position-Soupbowlination
protraction - moves anteriorly (moving forward)
retraction - moves posteriorly (pulling back)
elevation - moves in superior direction (up, closing mouth)
depression - moves in inferior direction (down, opening mouth)
how does movement occur? - when muscles contract
the 2 most common synovial joints? - ball and socket and hinge joints
examples of ball and socket joint - shoulder joint and hip joint
examples of hinge joints - elbow, knee, ankle, and interphalangeal joint
4 tissue types - connective, epithelial, muscle, and nervous tissue
what do connective tissues do? - composed of cells and their secretory products
that fills in spaces between other cells and tissues
what does epithelial tissues do? - composed of tightly packed cells that line all body
surfaces
what does muscle tissues do? - composed of cells that contract for movement
what does nervous tissues do? - composed of cells that send electrical signals