Bones and Joints Flashcards
What are the 3 planes of movement
Sagittal, frontal, transverse
distal
furthest away from center of body
lateral
outwards
medial
towards midline
proximal
closest to center of body
unilateral
produced by only one limb
bilateral
both sides of body
cotralateral
opposite side
ipsilateral
same side
which plane of movement gets the least attention
transverse
Bone/Muscle/Weight
lever/effort/load
First class lever
weight and force are op opposite side of lever
example of 1st class lever
elbow joint where lower arm is extended- tricep is force, elbow is fulcrum, hand is load
second class lever
force is applied at one end of the lever, fulcrum at the other end located in the middle is the load
example of 2nd class lever
ankle joint where ball of foot is fulcrum gastrocnemius is effort, resistance is foot pushing to floor
third class lever
effort is applied between load and fulcrum most skeletal muscles
example of third class lever
biceps lifting the forearm, anything carried is the load
which lever is at a mechanical disadvantage
1st
which lever sacrifices speed and ROM
2nd class
Bones and joints of shoulder girdle
acromioclavicular joint, clavicle, sternoclavicular joint, glenohumeral joint, scapula
acromioclavicular joint
scapula and clavicle meet gliding synovial joint at the top of shoulder
sternovlavicular joint
where clavicle articulates with sternum gliding synovial joint w. a cartilaginous disc tha absorbs stress
glenohumeral joint
proximal end of humerus rounded to form ball of shoulder joint which articulates with the glenoid cavity
glenoid cavity
shallow socket at top lateral edge of scapula
scapula
triangular shaped flat bone depression in upper lateral corner forms socket for shoulder joint projection of bone above socket is called acromin
movements in shoulder
ab/adduction, flexion and extension
vertebral column made of
irregular bones with transverse process from each side and posterior process at the rear
Spine
Cervical, Thoracic, Lumbar, Sacrum, Coccyx
Atlas and Axis movement
flex, extend, laterally flex, rotation
cervical vertebrae movement
lateral flexion, flexion, extension and rotation
thoracic vertebrae
larger than cervical to support more weight attachment points for each rib
thoracic vertebrae ROM
moderate flexion, extension, lateral flexion, rotation