Movement of the scapulothoracic joint Flashcards Preview

Scapular region > Movement of the scapulothoracic joint > Flashcards

Flashcards in Movement of the scapulothoracic joint Deck (11)
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1

Which muscles maintain the position of the scapula?

Pec. Major/Minor
Lats
serratus anterior
rhomboid MM
levator scapulae

2

What is the degree of motion of the scapula dependent on?

the clavicle to move along two joints:
Sternoclavicular
acromiclavicle

3

What is open chain motion?

the proximal end is attached to body and the vista end is free
describes how limbs move relative to the body

4

What is closed chain motion?

both proximal and distal ends are fixed
motions of the body relative to fixed outside objects

5

What is concentric contraction?

Muscle gets gets shorter with contractions

6

eccentric contraction

muscles get longer as they contract

7

what is isometric contraction?

when force of muscles equals resistance
muscle length doesn't change

8

What is the agonist?

primary muscle moving the joint

9

What is a synergist?

muscle assisting in movement of that joint

10

What is a antagonist?

muscles that opposes a muscles action

11

Name the sequence in raising the ark 180 degrees?

0-60 supraspinatus and deltoid involved in abduction
60 -120 supraspinatus contract but traps and serratus anterior increasingly are added to raise the point of the shoulder
120 -180 afteter complete contraction of traps and serratus anterior spine curves to allow final few degrees