EXTRINSIC

Question 1

Upper third – elevate scapula

Middle third – retract scapula

Lower third – depress scapula

Upper + Lower – rotate scapula

With serratus anterior – raise arm from 90 to 180

Answer 1

trapezius

Question 2

Extend humerus

Adduct humerus

Medially rotate humerus

Raise body toward arms during climbing (pull ups)

Answer 2

latissimus Dorsi m.

Question 3

Retract scapula

Tilt glenoid inferiorly

Fix scapula to thoracic wall

Answer 3

Rhomboid Minor m.

Rhomboid Major m.

Question 4

Elevate scapula

Tilt glenoid inferiorly

Answer 4

Levator Scapulae m.

Question 5

Elevate ribs Increase

diameter of thorax (inspiration)

Answer 5

Serratus Posterior Superior m.

Question 6

Depress ribs

Increases diameter of thorax (inspiration)

Answer 6

Serratus Posterior Inferior m.