quiz 1

Question 1

the scientific study of motion and the active and passive forces involved

Answer 1

kinesiology

Question 2

what axis does the sagittal plane move around

Answer 2

frontal/x-axis

Question 3

sagittal plane

Answer 3

divides left and right

Question 4

horizontal plane

Answer 4

divides top and bottom

Question 5

what axis does the horizontal plane move around

Answer 5

vertical/y-axis

Question 6

what axis does the frontal plane move arond

Answer 6

sagittal/z-axis

Question 7

degrees of freedom

Answer 7

number of planes available for a joint to move through

Question 8

having a separation of the bones and the presence of a joint cavity

Answer 8

diarthrodial/synovial joint

Question 9

connected by a hyaline or fibrocartilage producing little movement

Answer 9

cartilaginous joint

Question 10

has no separation or joint cavity

Answer 10

fibrous joint

Question 11

contractile unit of muscle

Answer 11

sarcomere

Question 12

sliding filament theory of muscle contraction

Answer 12

muscles can shorten to half of their resting length

Question 13

developed in the non-contractile components of muscles

Answer 13

passive tensions

Question 14

developed in the contractile elements of muscles

Answer 14

active tension

Question 15

the point where a 2-joint muscles cannot shorten any further even though there is more range available in the joints

Answer 15

active insufficiency

Question 16

the point where a multi-joint muscle cannot be lengthened any further without damage to the fibers, even though there are no joint range of motion restrictions

Answer 16

passive insufficiency

Question 17

where passive insufficiency occur

Answer 17

in the antagonist muscle

Question 18

isometric muscle contraction

Answer 18

contraction with no change in muscle length
no movement occurs

Question 19

isotonic muscle contraction

Answer 19

change in muscle length causing a joint angle change
movement occurs
concentric/eccentric

Question 20

isokinetic muscle contraction

Answer 20

speed of movement is constant, resistance changes
can only be produced with special equipment

Question 21

concentric contractions

Answer 21

muscle actively shortening
ex: lifting up bar

Question 22

eccentric contractions

Answer 22

muscle actively lengthening from a shortened position
ex: bring bar back down

Question 23

agonist is the ___ mover

Answer 23

prime

Question 24

antagonist muscle

Answer 24

opposite motion to the agonist with potential to oppose, but is usually relaxed

Question 25

synergist muscles

Answer 25

muscles that work together to enhance a particular motion

Question 26

forces that influence movement

Answer 26

gravity center of gravity

Question 27

constant force that affects almost every motor act characterized by heaviness or weight

Answer 27

gravity

Question 28

point at which the downward force created by mass and gravity is equivalent or balanced on either side of a fulcrum

Answer 28

center of gravity

Question 29

factors affecting stability

Answer 29

height of COG above base of support size of base of support location of gravity line within base weight of body