gross muscle structs Flashcards
what are the bone lever classes
1) fulcrum central, load one side, force on the other side
2) fulcrum -> weight -> applied force
good for heavy loads
3) flucrum->applied force -> load
good for speed and rom
how can muscle fibers be arranged and what does this change.
parralel: fibers are arranged between muscle attachments
higher ROM, lower force
pennate: orthogonal to muscle attachments
shorter ROM, higher force
what are the three types of muscle actions
concentric: tention >load. good for movement in the direction
essentric tention < load. good for cotroling movement
isometric tention = load. good for keeping static and stable
what are the 9 muscles groups you are required to know for HUB191
biceps brachii
triceps brachii
deltoid
iliopsoas
gluteus maximus
quadricepts femoris
hamstrings
tibialis anterior
tricepts surae
What are the connections of:
triceps brachii
and concentric action
humursus + scapula -> ostecron process of unlar
extend: elbow and shoulder
what are the four roles of muscles at joints
agonist - antagonist pair
stabilisers (isometric)
nuteralises: removes unwanted movement ( pronator muscles of the forarm)
What are the connections of: biceps brachii
and concentric action
scapula -> radial tuberosity
flex elbow and shoulder
What are the connections of:
gluteus maximus
and concentric action
sacrum + ilium -> fibula
extention: hip
What are the connections of:
deltoid
and concentric action
clavical + scapula -> deltoid tuberosity
abduction flexion and extention of shoulder
What are the connections of:
iliopsoas (2 muscles)
and concentric action
psoas major: lumbar vertiba -> femur
iliacus: ilial fossa -> femur
hip: flexion
What are the connections of:
hamstrings
and concentric action
semimembronsus + semitendonsus: iscium -> tibia
biceps femorus: iscium + femur -> ulnar
knee: flextion + rot when
hip:extention
What are the connections of:
tibialis anterior
and concentric action
tibia -> tarsals
ankle: dorsiflexor
What are the connections of:
quadriceps femoris
and concentric action
rectus femoris: ilium -> tibial tuberosity
hip: flextion
knee: exstenion
vastus medialis + vastus intermedialis + vastus lateralis -> femur -> tibial tuberosity
knee: extention
What are the connections of:
triceps surae
and concentric action
gastrocnemus: condles of femur -> calculus
knee: flextion
ankle: plantraflexion
soleus: tibia + fibula -> calculus
ankle: plantraflexors
name the knee flexion agonists
gastronemis + bicepts femoris + semimembransus + semitendonsus
