Exam 4 - Muscles & Their Actions Flashcards Preview

Therapeutic Modalities II > Exam 4 - Muscles & Their Actions > Flashcards

Flashcards in Exam 4 - Muscles & Their Actions Deck (43):
1

A humeral propeller. Responsible for -- GH extension, adduction, and internal rotation. Assists with scapular depression, retraction, and downward rotation.

(Reversal of muscle function -- if the arms are stabilized, it will elevate the pelvis.)

Latissimus dorsi (large back muscle)

2

Assists in GH joint flexion (up to 90 degrees), GH joint extension (from 180 - 90 degrees). Also GH joint/Humeral adduction, internal shoulder rotation (think arm wrestling), and horizontal adduction.

Pectoralis major
(i.e. - large, bouncing, chest muscle.)

3

A humeral propeller. Assists latissimus dorsi in shoulder extension. Assists in adduction, internal rotation, and extension of the humerus.

Teres major (also called the latissimus dorsi's "little helper")

4

The "workhorse" of elbow flexion. Assists the biceps brachii with elbow flexion. A synergist. (It is strong whether the forearm is in supination or pronation.)

Brachialis

5

Elbow flexor. PRIMARY supinator of the radioulnar joint (forearm supination.) Also a weak shoulder flexor.

Biceps brachii (Let me see those pythons)

6

Elbow extensor (found on the posterior side of the upper arm)

Triceps brachii

7

Forearm pronator (mostly), also assists with elbow flexion.

Pronator teres

8

SECONDARY supinator.

Supinator

9

To summarize, it stabilizes and moves the scapula. it has upper, middle And lower portions

Trapezius

10

Chiefly responsible for scapula RETRACTION. A scapular pivoter. RETRACTS and elevates the scapula. Also assists in downward ROTATION of the scapula..RRRRR

Rhomboids

11

A scapular pivoter. Responsible for scapular protraction and upward rotation. Known as the big seeing muscle in boxing because it is the primary muscles for punching (protection). Also prevents "winging of the scapula."

Serratus anterior

12

A shoulder protector. (Part of the rotator cuff.)
It is responsible for INTERNAL ROTATION in unison with the lats and teres major.

Subscapularis

13

A shoulder protector. (Part of the rotator cuff.)
main EXTERNAL ROTATOR of the shoulder and along with teres minor rotator cuff muscles to stabilize the humeral head in the glenoid fossa.

Infraspinatus

14

Prime mover of arm abduction Along frontal plane

Deltoids

15

Hip extension, abduction, internal and external rotation.

Gluteus (needed for @$*ternal rotation)

16

Pulling your scapulae together

retraction

17

Moving your leg toward midline

Adduction

18

Moving arm away from midline

Horizontal abduction

19

Moving your hand toward thumb side

Radial deviation

20

Turning your foot inward

inversion

21

Move your arm through cone shaped arc

circumduction

22

Moving your arm across the body at shoulder level

horizontal adduction

23

Shoulder motion during bowling back swing

hyperextension

24

Turning your palm upward

supination

25

Moving your arm out to the side

abduction

26

Moving your foot outward

eversion

27

Moving your scapulae away from midline

protraction

28

Turning your forearm downward

pronation

29

Moving your hand down the side of your leg

lateral bending

30

Primary muscle involved in shoulder girdle elevation

upper trapezius

31

Primary muscle involved in shoulder girdle depression

lower trapezius

32

Primary muscle involved in shoulder girdle protraction

serratus anterior

33

Primary muscle involved in shoulder girdle retraction

middle trapezius

34

Primary muscle involved in shoulder abduction

middle deltoid

35

Primary muscle involved in shoulder adduction

pectoralis major

36

Primary muscle involved in shoulder flexion

anterior deltoid

37

Primary muscle involved in shoulder extension/hyperextension

posterior deltoid

38

Primary muscle involved in shoulder internal rotation

latissimus dorsi

39

Primary muscle involved in shoulder external rotation

infraspinatus

40

Primary muscle involved in elbow flexion

biceps brachii

41

Primary muscle involved in elbow extension

triceps brachii

42

Primary muscle involved in forearm pronation

pronator teres

43

Primary muscle involved in forearm supination

biceps brachii