Actions

Question 1

Trapezius (descending)

Answer 1

1. Draws scapula obliquely upward
2. Rotates glenoid cavity superiority
3. Tilts head to same side
4. Rotates head to opposite side

Question 2

Trapezius (traverse)

Answer 2

Adduction of the scapula

Question 3

Trapezius (ascending)

Answer 3

Draws scapula medially downward

Question 4

Levator scapulae

Answer 4

1. Draws scapula medially upward while drawing inferior angle of the scapula medially
2. Incline neck to the same side

Question 5

Rhomboid Minor

Answer 5

Draws the scapula medially upward, steadies it

Question 6

Rhomboid Major

Answer 6

Draws the scapula medially upward, steadies it

Question 7

Posterior Deltoid

Answer 7

Adduction, extension, and lateral rotation of the humerus

Question 8

Supraspinatus

Answer 8

1. Abduction of the humerus (1st 10-15 degrees)

2. Helps hold humerus in glenoid cavity

Question 9

Infraspinatus

Answer 9

1. Lateral rotation of the humerus

2. Helps in adduction and holding humerus in glenoid cavity

Question 10

Latissimus dorsi

Answer 10

1. Internal rotation, adduction and extension

2. Accessory respiration m. (“cough” m.)

Question 11

Teres Major

Answer 11

Internal rotation, adduction, and extension

Question 12

Teres Minor

Answer 12

1. Lateral rotation of humerus

2. Helps in adduction and holding humerus in glenoid cavity