11. Basic Kines Flashcards
Study of movement
Kinesiology
the application of mechanics to the human body
biomechanics
2 subtopics of biomechanics
statics & dynamics
biomechanics that deals with bodies in uniform motion
statics
deals with bodies that either accelerate or decelerate
dynamics
deals with forces acting on the body
Kinetics
4 primary sources of forces
Gravity
Muscles
Externally applied resistance
Friction
this is the study of motion regardless of force
kinematics
movement of consecutive interconnecting joints
kinematic chain
OPP of Shoulder
55 deg abd
30 deg horizontal abd
called scaption
OPP of Humeroulnar jt
70deg flex
10deg supination
OPP of proximal radioulnar jt
70deg flex
35deg supination
“Pru7035”
OPP of distal radioulnar jt
10 deg supination
“dru10”
OPP of hip
30 deg flex
30 deg abd
slight ER
“hip FABER 3030 slight”
OPP of Knee
25 deg flex
OPP of ankle
10 deg plantar flex
OPP of wrist
slight ulnar dev
OPP of trunk
midway bet flex & ext
OPP of TMJ
slightly ajar
2 subcategories of translatory motion
rectilinear (goes up & down)
curvilinear (travels along an curved path)
3 laws of motion (Isaac newton)
Law of inertia
Law of Mass & acceleration
Law of Action & reaction
what does Law of inertia state?
an obj at rest will remain at rest & an obj moving will keep moving unless an external force acts upon it
What does Law of Mass & acceleration state?
F=ma
force is directly proportional to mass & acceleration
what does Law of Action & reaction state
for every action, there is an equal and opposite reaction
location of CoG in adults
slightly ant to S2
55% of the body’s height
M>F male CoG higher than females
Location of CoG in head
sphenoid sinus
Location of CoG in neck
basiocipital
Location of CoG in trunk
Ant to T11
Location of CoG in entire UE
just above the elbow
Location of CoG in Arm
Medial head of trieps
Location of CoG in forearm
pronator teres
Location of CoG in hand
3rd MCP
Location of CoG in entire LE
just above the knee jt
Location of CoG in thigh
adductor brevis/magnus
Location of CoG in leg
popliteus
Location of CoG in Foot
2nd metatarsal
where does the LoG pass through?
Legend: A=anterior; T=though; P=Posterior
A-AO jt
T-cervical
A- thoracic
T- lumbar
P- hip
A- knee
A- ankle
3 types of equilibrium
Stable
unstable
neutral
equilibrium where when COG is displaced, the body will return to its former position
stable equilibrium
equilibrium where when COG is displaced, the body will seek a new position
unstable equilibrium
equilibrium where COG is neither displaced or undisplaced, but the body moves form one position to another
neutral equilibrium
Lever class for balance/ equilibrium
class 1
Lever class for Power
Class 2
Lever class for Mobility
Class 3