DHUBS 2 - Week 4 - Upper Limb (Shoulder and Scapula)

Question 1

What muscles act on the scapular for elevation and depression?

Answer 1

Elevation:
- Upper Trapezius
- Levator Scapulae

Depression:
- Lower trapezius
- Pectoralis minor

Question 2

What muscles act on the scapular for Retraction and protraction?

Answer 2

Retraction:
- Rhomboid major
- Rhomboid minor
- Middle fibers of trapezius

Protraction:
Serratus anterior
Pectoralis minor

Question 3

What muscles act on the scapular for medial rotation and lateral rotation?

Answer 3

Medial rotation:
- Rhomboid major
- Rhomboid minor
- Levator scapulae
- Pectoralis minor

Lateral rotation:
- Upper trapezius
- Lower trapezius
- Serratus anterior

Question 4

What muscles act on the shoulder for elevation and shoulder adduction?

Answer 4

Shoulder elevation: Upper trapezius

Shoulder adduction:
Rhomboids

Question 5

What muscles act on the shoulder for Abduction early and late.

Answer 5

Abduction Early: Supraspinatus

Abduction Late: Deltoid

Question 6

What muscle act on the shoulder for fixation?

Answer 6

Serratus Anterior

Question 7

What muscles act on the shoulder for Adduction early and late?

Answer 7

Adduction early: Latissimus dorsi.

Adduction late: Pectoralis Major