Musculature of the shoulder girdle

Question 1

3 things about the shoulder girdle musculature

Answer 1

have proximal attachment to axial skeleton
distal attachment on scapulae/clavicle
ant/post groupings

Question 2

Posterior musculature

Answer 2

Trapezius
levator scapulae
Rhomboid major/minor

Question 3

Function of the trapezius

Answer 3

1. elevation 2.elevation,upward rotation, retraction 3.retraction
2. upward rotation, depression.retraction

Question 4

Functions of the levator scapulae

Answer 4

elevation

downward rotation

Question 5

what force couples with the weight of the arm.

Answer 5

the levator scapulae lifts the medial angle

with the weight of the arm pulling scapulae down

Question 6

Function of the Rhomboids

Answer 6

downward rotation,
retraction,
elevation

Question 7

What do rhomboids do

Answer 7

maintain good posture with middle trap

if weak slumped posture

Question 8

Anterior musculature of shoulder girdle

Answer 8

serratus anterior
pectoralis minor
subclavius

Question 9

Function of serratus anterior

Answer 9

protraction

upward rotation with trap (force couple)

Question 10

Pectoralis minor function

Answer 10

downward rotation
anterior tilt
depression

Question 11

what does pectoralis do

Answer 11

lifting effect on ribs during force inspiration and posture

Question 12

Functions of subclavius

Answer 12

protect and stabilize the SC joint

depress scapula

Question 13

Force couples

Answer 13

two forces whose points of application occur on opposite sides of axis
in opposite directions to produce rotation of the body

Question 14

Example of force coupling

Answer 14

Trapezius & serratus anterior

Deltoid & supraspinatus

Question 15

What is the force coupling of trapezius & serratus anterior

Answer 15

produces protraction and upward motion of scapula

Question 16

what is force coupling of the deltoid & supraspinatus

Answer 16

produce abduction of the GH joint

Question 17

What muscles produce protraction & retraction

Answer 17

serratus anterior
pectoralis minor
trapezius II,III,IV
Rhomboids

Question 18

What muslces produce upward & downward rotation

Answer 18

Trapezius II,IV
serratus anterior
levator scapulae
rhomboids
pectoralis minor

Question 19

What muscles do elevation & depression

Answer 19

Trapezius I,II--IV
levator scapulae
rhomboids
pectoralis minor
subclavius

Question 20

What exercise strengthens the Rhomboids

Answer 20

Rows

Question 21

What exercise strengthens the levator scapulae

Answer 21

Shoulder shrugs