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Flashcards in Chapter 4 Deck (35)
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1

what is a uniaxial joint

joint that act as hinges rotating only 1 axis (elbow)

2

what is biaxial?

joints that move 2 perpendicular axes such as ankle wrist

3

multiaxial joints?

allow movement about all 3 perpendiculat axes such shoulder and hip (ball-and-socket)

4

vertebrae groups

7 cervical
12 thoracic
5 lumbar
5 sacral
3-5 coccygeal

5

during a straight-leg sit-up the origin (proximal[toward the center of the body]) of the iliacus muscle would be the?

femur because it is immobile

6

during a straight-leg sit-up the insertion( distal:away from the center of the body) of the iliacus muscle would be the ?

pelvis because it is mobile

7

what assist is joint stabilization and in braking the limb toward the end of a fast movement?

antagonist

8

synergist?

assists indirectly in a movement

9

what is a lever?

a rigid or simiriged body that when sujected to a force whose line of action does not pass throught its pivot point exerts force on any object impeding its tendency to rotate

10

fulcrum

the picot point of a lever

11

moment arm

the perpendicular distance from the line of action of the force to the fulcrum.

12

torque

also called mement, the degree a force tends to ratate an object about a specified fulcrum: magnitude of a force times the length of its moment arm

13

muscle force

force generated by biochemical activity or sthe stretching of noncontractile tissue

14

resistice force

force generated by a source extended to the body (gravity, inertia, friction) it acts contrary to muscle force

15

mechanical advantage

the ratio of the moment arm through which an apllied force acts to that through which a resistive force acts

16

first class lever

a lever for which the muscle force and resistive force act on opposite sides of the fulcrum

17

2nd class lever

a lever for which the muscle force and resistive force act on the same side of the fulcrum

18

movement and plane during a wrist curl

wrists flexion sagittal

19

movement and plane during bicep curl

flexion sagittal

20

movement and plane during tricep pushdown

extension sagittal

21

movement and plane during front shoulder raise

flexion sagittal

22

movement and plane during neutral grip seated row

extension sagittal

23

movement and plane during wide grip lat pulldown

adduction frontal

24

movement and plane during wide grip shoulder press

abduction frontal

25

movement and plane during arm wrestle winning

internal rotation transverse

26

movement and plane during arm wrestle losing

external rotation transverse

27

movement and plane during dumbbell chest fly

adduction transverse

28

movement and plane during bent over lateral raise

abduction transverse

29

movement and plane during chin to chest; look up

chin to chest neck flexion sagittal
look up neck extension sagittal

30

movement and plane during looking left and right

rotation transverse