Coordination

Question 1

agonists

Answer 1

muscles directly responsible for producing a movement
-prime movers: large impact
Assistant: only help when needed
Synergists: muscles that work together
concentric

Question 2

antagonist (breaks)

Answer 2

role played by muscle acting to slow or stop a movement
-relaxed at start, most active to slow movement at the end of the movement
-Eccentric contraction

Question 3

Stabilizer

Answer 3

role played by a muscle acting to stabilize a body part against some other force
-act mostly isometrically to contract gravity and inertia of movement

Question 4

neutralizer

Answer 4

role played acting to eliminate an unwanted action produced by an agonist
-when a muscle does more than 1 action, this counteracts the unwanted action (isometric)

Question 5

Two joint/ multi joint muscles

Answer 5

purpose: to efficiently transfer energy to non-adjacent segments during powerful actions
disadvantages: active and passive insufficiency

Question 6

active insufficiency

Answer 6

limited ability of a multi-joint muscle to produce force when the joint places the muscle on slack

Question 7

passive insufficiency

Answer 7

inability of a two joint muscle to stretch to the extent required to allow full range of motion at all joints crossed