Body Mechanics

Question 1

center of mass

Answer 1

balancing piont; add weight and it will move towards the weight

Question 2

linear force

Answer 2

push or pull

Question 3

angular force

Answer 3

torque; causes rotation

Question 4

internal forces

Answer 4

muscles

Question 5

external forces

Answer 5

gravity, friction, weights, momentum, therabands

Question 6

gravity and friction: friend or foe?

Answer 6

can be either

Question 7

vectors

Answer 7

tail (starts at cog or muscle attachment), line, arrowhead (points in direction of force)

Question 8

moment

Answer 8

torque created from a force working at a distance from the axis

Question 9

moment arm

Answer 9

perpendicular distance from line of action of force to axis

Question 10

types of forces

Answer 10

tensile, compressive, distractive, shear, bending, torsion, combined.

Question 11

be aware of your HAT

Answer 11

head, arms, trunk

Question 12

effect of too little load

Answer 12

atrophy

Question 13

effect of too much load

Answer 13

breaks and injury

Question 14

appropriate amount of load

Answer 14

good bone density

Question 15

base of support

Answer 15

area around where you/an object touches the ground

Question 16

positioning for stability

Answer 16

wide BOS, low COG, COG over BOS, decreased distance between caregiver and patient