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
