MT 1 Appendicular Muscles

Question 1

Some Tips for Muscle:

1. MUscles with anterior fibres are typically ______
2. Muscles with posterior fibres are typically _______
3. Muscles with fibres above the glenohumeral joint (shoulder) are typically for _______
4. Muscles with fibres below the glenohumeral joint are typically for ________
5. Muscles that cross anteriorly (back to front) help ______ rotate
6. Muscles that cross posteriorly (front to back) help ____

Answer 1

Some Tips for Muscle:

1. Muscles with anterior fibres are typically flexors
2. Muscles with posterior fibres are typically extensors
3. Muscles with fibres above the glenohumeral joint (shoulder) are typically for abduction
4. Muscles with fibres below the glenohumeral joint are typically for adduction
5. Muscles that cross anteriorly (back to front) help medially rotate
6. Muscles that cross posteriorly (front to back) help laterally rotate

Question 2

The Trapezius muscle ______, ______, and ______ the scapula based on fibre orientation

Answer 2

The Trapezius muscle elevates, retracts and depresses the scapula based on fibre orientation

Question 3

The levator scapulae helps in what movement?

Answer 3

Elevation of the scapula

Question 4

The major and minor rhomboids assist in what motion?

Answer 4

Retraction of the scapula

Question 5

What movement does the serratus anterior assist in?

Answer 5

Protraction of the scapula

(curve shoulders toward the sternum)

Question 6

What is the movement of the Pectoralis Minor?

Answer 6

Depresses and protracts the scapula; elevates the ribs (breathing)

Question 7

Which three muscles act on the pectoral girdle to raise the arm?

Answer 7

Trapezius Upper

Trapezius Lower

Serratus Anterior

Question 8

Which three muscles acting on the pectoral girdle help bring the arm down?

Answer 8

Levator scapulae

Rhomboids

Pectoralis Minor

Question 9

What movement do the Pectoralis Major, Subscapularis and Deltoidus have in common?

Answer 9

Medial rotator

Question 10

The Pectoralis major and deltoideus are both arm ______ and ______ and ______

Answer 10

The Pectoralis major and deltoideus are both arm arm flexors and medial rotators

Question 11

The Pectoralis major has which three movements

Answer 11

Arm adductor

Flexor

Medial rotator

Question 12

The Deltoideus has which three movements?

Answer 12

Major arm abductor

arm flexor

medial rotator

Question 13

The deltoideus has what movements?

Answer 13

Major arm abductor

Arm extensor

Lateral Rotator

Question 14

4 movements of the Latissmus Dorsi

Answer 14

Powerful arm retractor *major climbing muscle*

arm extensor

adductor

medial rotator

Question 15

The Teres major assists the latissimus dorsi in which movements?

Answer 15

Arm extension

Medial rotation

Question 16

The Supraspinatus assists the deltoid in arm ______ (first __ degrees)

Answer 16

The Supraspinatus assists the deltoid in arm abduction (first 15 degrees)

Question 17

The infraspinatus is a _____ _____ _____

Answer 17

The infraspinatus is a lateral arm rotator

Question 18

The infraspinatus muscle and teres minor are both ____ _____ _____

Answer 18

The infraspinatus muscle and teres minor are both lateral arm rotators

Question 19

What are the four rotator cuff muscles?

SITS

Answer 19

1. supraspinatus
2. infraspinatus
3. Teres minor
4. subscapularis