unit 9 lab Flashcards
what moves the body
the skeletal muscles that move the bones which cause joints to rotate
what are the points of attachment called
origin and insertion
bundles of fibers of various sizes and patterns
fasciculi (bundles)
surrounding each muscle fiber is a thin layer of tissue called
endomysium
bundles become stronger when a layer of what is added
perimysium
the entire muscle is surrounded by what? which is continuous with the tendon
epimysium
the fixed attachment point of a muscle to bone - proximal
origin
the moveable attachment point of muscle to bone - disal
insertion
the main muscle responsible for producing a specific movement
prime mover (agonist)
the muscle that opposes the action of the agonist
antagonist
a muscle that assists the prime mover in its action
synergist
movement decreasing angle of two body parts
flexison
movement increases angle of body parts
extention
movement away from midline of body
abduction
movement towards the midline of body
adduction
movement of a bone around its longitudinal axis
rotation
moving a body part forward
protraction
moving a body part backwards
retraction
lifting a body part upwards
elevation
moving body part downwards
depression
flexing foot towards shin
dorsiflexion
pointing the foot downward away from the shin
plantar flexion
turning sole of foot inward
inversion
turning the sole of foot outwards
eversion
rotating forearm to turn the palm upward or forward
supination
rotating the forearm to turn palm down
pronation
