chapter 6

Question 1

description of angular motion

Answer 1

all points move in a circular path about the same axis

Question 2

4 descriptors of angular motion

Answer 2

how far, direction, how fast, speeding up or down

Question 3

angle

Answer 3

intersection of two lines, planes, or line and plane

Question 4

1 rad= ___degrees

Answer 4

57.3

Question 5

the orientation of a line with another line or plane

Answer 5

angular position

Question 6

absolute angular position

Answer 6

one line or plane is fixed and immovable relative to the earth
orientation of a body part to the horizontal or vertical

Question 7

relative angular position

Answer 7

both lines or planes are capable of moving
joint angle

Question 8

are joints measured with relative or absolute angular positions

Answer 8

relative

Question 9

right hand rule

Answer 9

align right thumb with axis of rotation in positive direction, fingers of right hand curl in the + direction of rotation

Question 10

elbow flexion with the right arm is in the ___ direction

Answer 10

+, counterclockwise

Question 11

elbow flexion with the left arm is in the ___ direction

Answer 11

-, clockwise

Question 12

axis of rotation is always perpendicular to

Answer 12

plane of motion

Question 13

R wrist flexion + or -

Answer 13

+

Question 14

R wrist extension + or -

Answer 14

-

Question 15

R elbow flexion + or -

Answer 15

+

Question 16

R elbow extension + or -

Answer 16

-

Question 17

when a segment rotates, a point ____ the axis of rotation travels a greater linear distance than a point ____the axis

Answer 17

further
closer

Question 18

rate of change of angular position

Answer 18

how fast the body is rotating

Question 19

instantaneous angular velocity

Answer 19

rate of rotation at an instant in time

Question 20

velocity is vector or scalar

Answer 20

vector

Question 21

tangential linear velocity of a rotating body
magnitude:
direction:

Answer 21

wr
tangent to the circular path of a rotating point

Question 22

tangential linear velocity

Answer 22

how fast an in what direction the point is moving at an instant in time

Question 23

speeding up/starting:
angular acceleration is in the direction of

Answer 23

angular motion

Question 24

slowing down/stopping:
angular acceleration is in the direction

Answer 24

opposite of angular motion

Question 25

angular acceleration: sign of velocity and sign of acceleration are the same when body is

Answer 25

rotating faster

Question 26

angular acceleration: sign of velocity and sign of acceleration are the opposite when body is

Answer 26

rotating slower

Question 27

component of linear acceleration tangential to the circular path

Answer 27

tangential acceleration

Question 28

centripetal (radial) acceleration

Answer 28

component of linear acceleration to the center of the circular path

Question 29

sagittal plane

Answer 29

anterior to posterior and superior to inferior
divide into R and L parts

Question 30

frontal plane

Answer 30

side to side, superior to inferior
divide into anterior and posterior

Question 31

transverse plane

Answer 31

side to side, inferior to posterior
divide into superior and inferior

Question 32

AP axis perpendicular to what plane

Answer 32

frontal plane

Question 33

transverse axis perpendicular to what plane

Answer 33

sagittal plane

Question 34

longitudinal axis perpendicular to which axis

Answer 34

transverse axis

Question 35

relative angular motion

Answer 35

motion between two segments on opposite sides of a joint

Question 36

movements in the sagittal plane

Answer 36

flexion, extension, dorsiflexion, plantar flexion

Question 37

what axis goes with sagittal plane

Answer 37

ML/transverse

Question 38

moments in the frontal plane

Answer 38

ab/adduction, radial/ulnar deviation, inversion/eversion, elevation/depression, lateral flexion to left or right

Question 39

what axis goes with frontal plane

Answer 39

AP axis

Question 40

movements in the transverse plane

Answer 40

internal/external rotation, pronation, supination, horizontal ab/adduction, right or left rotation

Question 41

what axis goes with transverse plane

Answer 41

longitudinal