LECTURE 2: joing structure and muscle function Flashcards
what states bones will adapt based on stress or demands placed on them
wolff’s law
T/F: Tissue properties and joint shapes will change as a result of the demands imposed on them
T
what Joined together by fibrous interosseous connect tissue
fibrous joints
what are synarthrosis joints
little to no movement allowed
what type of movement joints are fibrous joints
synarthrosis synarthrosis
what is a suture joint
bone edges interlock one another
what is a gomphosis joint
peg in a hole joint (teeth)
what is a syndesmosis joint
joined by interosseous ligament
what are suture , gomphosis and syndesmosis joints examples of
fibrous joints
what is an example of a syndesmosis joint
radius and ulna
tibia and fibula
what joints are Connected by fibrocartilage or hyaline cartilage
cartilaginous joints
what type of movement joints are cartilaginous joints
amphiarthrosis
what type of movement is a amphiarthrosis joint
allow for some movement
what is Directly joined by fibrocartilage (discs or pads) and covered with hyaline cartilage
symphysis
what is examples of symphysis
intervertebral joints and symphysis pubic
what is synchondrosis connected by
hyaline cartilage
what is examples of synchondrosis in the body
first 7 ribs to the sternum
epiphyseal growth plates near ends of long bones
what joint has No connective tissue and directly unites
bony surfaces
synovial joints
what type of joints movement is synovial joints
diarthrosis
what type of movement is diarthrosis
free to move (elbow and knees joints)
what stabilizes the synovial joints
capsules , passive (ligaments) and active (muscles ) structures
what does the inner synovial layer provide
lubrication, vascularization,
and nutrition to cartilage
what is Dense irregular connective tissue with varying thickness
outer fibrous layer of the joint capsule
what does the outer fibrous later of the joint capsule have
Poor vascularity, good innervation
what joint receptor has sensitivity to stretch
ruffini
what joint receptor has sensitivity to compression or changes in swelling
pacini
what joint receptor has sensitivity to pressure and forceful joint motion into extremes of motion
golgi
what joint receptor has sensitivity to stress
unmyelinated free nerve ending
what covers inner synovial membrane, keeps joint surfaces lubricated to reduce
friction
synovial fluid
what is viscosity of fluid and essential for lubrication; synovial folds
hyaluronate
what is cartilage to cartilage lubrication within the synovial fluid
lubricin
what Align joint surfaces, guide or restrain motion
ligaments
what in the body helps Improve joint congruence, absorb compressive joint forces, and increase joint
stability
menisci , labrum’s and disc
what Transmit forces developed by muscles for motion, and act as a active joint stabilization
tendons
what are examples of uniaxial joints
hinge joints and pivot joint
example of hinge joint
humeroulna
example of pivot joint
proximal radioulnar joint
what type of joint is a condyloiod joint
biaxial
what type of joint is a saddle joint
biaxial
example of saddle joint
first carpometacarpal joint
example of condyliod joint
radiocarpal joint
what are examples of triaxial joint
plane joint and ball and socket joint
example of plane joint
intercarpal joint