Midterm Prep Flashcards
Force
Mass X Acceleration
Acceleration of gravity
9.81 m/s^2
Moment arm
Distance between the force’s line of action and the axis of rotation
BMI
Mass(kg) / height(meters)^2
Essential fat
Required for normal physiological function
Storage fat
Stored in adipose tissue for energy supply purposes
(6) Joint movements
- Flexion-Extension
- Abduction-Adduction
- Rotation ( Inward-Outward )
- Supination-pronation
- Elevation-Depression
- Plantar flexion-dorsflexion
Synovial joint
Freely moveable
e.g., Elbow joint
Cartilaginous joint
Slightly moveable
e.g., Growth Plate
Fibrous joints
Immovable
e.g., skulls
Example of a long bone
Femur & Tibia
Example of a short bone
Tarsal and Carpals
Example of flat bone
Frontal and Parietal skull bones
2 Types of body composition prediction equations
(1) Population Specific
-Yuhasz
2 Types of body composition prediction equations
(2) Generalized
- Jackson, Pollock
- Durnin, Wormersley
- Peterson
- Wang
Frontal plane
Divides body into anterior and posterior
e.g., dick and ass
Sagittal plane
Divides body into right and left side
Transverse plane
Divided body into superior and interior
e.g., Up and Down
Common joint disorders
- Sprain
- Dislocation
- Subluxation
- Bursitis
- Arthritis
Dynamic (isotonic) contraction
Levers move through a range of motion
Isometric contraction
Tension builds but no motion
Isokinetic contraction
Muscle is shortened at a constant velocity determined my instrumentation
Torque
The product of force and the perpendicular distance from the force’s line of action to the axis of rotation. It may be thought of as rotary force
Units= Newton-meters (N.m)
Newton’s Laws of Motion
- Objects will maintain a state of rest or motion unless acted upon by an outside force
- Force = Mass X Acceleration
- For every action there is and opposite and equal reaction
Synovial fluid function
- Lubricates the joint surfaces as they slide over each other during joint movement
- Supplies nutrients to, and removes waste products from, the cartilage cells which have no direct blood supply
Pressure
Force/Area
Power
Force X volcity
