8: Shoulder Girdle & Shoulder Muscles Flashcards Preview

Anatomical Kinesiology > 8: Shoulder Girdle & Shoulder Muscles > Flashcards

Flashcards in 8: Shoulder Girdle & Shoulder Muscles Deck (45)
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1
Q

muscles that move the scapula

A

muscles of the shoulder girdle

2
Q

muscles anterior of scapula (SPS)

A

Subclavius, Pectoralis Minor, Serratus Anterior

3
Q

Subclavius OIA

A

O: 1st rib;
I: clavicle;
A: depresses clavicle, stabilizes shoulder girdle

4
Q

Pectoralis Minor OIA

A

O: ribs 3-5;
I: coracoid process of scapula;
A: depression, downward rotation, protraction

5
Q

assists in drawing the shoulder forward and downward, also to stabilize the shoulder girdle

A

pec minor

6
Q

Serratus Anterior OIA

A

O: ribs 1-9;
I: anterior vertebral border of SCAPULA;
A: protraction, upward rotation

7
Q

known as the “boxer’s muscle” because it helps with horizontal arm movement like punching and pushing during horizontal adduction

A

serratus anterior

8
Q

Levator Scapulae OIA

A

O: C1-C4;
I: vertebral border of SCAPULA;
A: elevation, assists in retraction and downward rotation

9
Q

Rhomboids (Major and Minor) OIA

A

O: C7-T5;
I: vertebral border of SCAPULA;
A: retraction, downward rotation, elevation

10
Q

Trapezius OIA

A

O: occipital protuberance to C7-T12;
I: lateral 1/3 of CLAVICLE, acromion process of SCAPULA, spine of SCAPULA;
A: elevation/depression, retraction, upward rotation

11
Q

action of Trap 1 (superior part)

A

elevation

12
Q

action of Trap 2 & 3 (middle part)

A

retraction

13
Q

action of Trap 4 (inferior part)

A

depression and upward rotation

14
Q

muscles posterior of scapula (LRT)

A

Levator Scapulae, Rhomboids, Trapezius

15
Q

Which muscles perform scapula elevation

A

levator scapulae and trapezius

16
Q

which muscles perform scapula depression

A

trapezius and pec minor

17
Q

which muscles perform scapula retraction

A

trapezius and rhomboids

18
Q

which muscles perform scapula protraction

A

serratus anterior and pec minor

19
Q

which muscles perform scapula upward rotation

A

trapezius and serratus anterior

20
Q

which muscles perform scapula downward rotation

A

pec minor and rhomboids

21
Q

what type of joint is the shoulder

A

triaxial

22
Q

superior shoulder joint muscles

A

deltoid and supraspinatus

23
Q

Anterior Deltoid OIA

A

O: lateral 1/3 CLAVICLE;
I: deltoid tuberosity;
A: flexion, internal rotation, horizontal adduction

24
Q

Middle Deltoid OIA

A

O: acromion process;
I: deltoid tuberosity;
A: abduction

25
Q

Posterior Deltoid OIA

A

O: spine of scapula;
I: deltoid tuberosity;
A: extension (hyper), external rotation, horizontal abduction

26
Q

superficial muscle that is a common site for injections

A

deltoid

27
Q

Supraspinatus OIA

A

O: supraspinous fossa of scapula;
I: greater tuberosity of humerus;
A: adduction, stabilization

28
Q

very deep muscle. when torn, pain is deep in the shoulder and gets worse as you try to abduct your arm. considered primary initiator of abduction until 30 deg

A

supraspinatus

29
Q

anterior shoulder joint muscles

A

coracobrachialis, pectoralis major, subscapularis

30
Q

Coracobrachialis OIA

A

O: coracoid process of scapula;
I: anteromedial surface of humerus;
A: flexion, adduction

31
Q

Pectoralis Major OIA

A

O: clavicle, sternum;
I: lateral lip of intertubercular groove;
A: adduction, internal rotation, flexion, horizontal adduction

32
Q

Subscapularis OIA

A

O: subscapular fossa of scapula;
I: lesser tuberosity of humerus;
A: internal rotation, stabilization

33
Q

posterior shoulder joint muscles

A

teres major, teres minor, latissimus dorsi, infraspinatus

34
Q

Teres Major OIA

A

O: posterior lower 1/3 of axillary border of scapula;
I: medial lip of intertubercular groove;
A: internal rotation, adduction, extension (hyper)

35
Q

Latissimus Dorsi OIA

A

O: T7-L5, iliac crest;
I: intertubercular groove;
A: adduction, internal rotation, extension (hyper)

36
Q

known as the “swimmer’s muscle” because it is important in shoulder extension during the power stroke

A

latissimus dorsi

37
Q

Infraspinatus OIA

A

O: infraspinous fossa of scapula;
I: greater tuberosity;
A: external rotation, horizontal abduction, stabilization

38
Q

Teres Minor OIA

A

O: upper 2/3 of axillary border of scapula;
I: greater tuberosity;
A: external rotation, stabilization

39
Q

located more lateral and inferior to the infraspinatus

A

teres minor

40
Q

Rotator Cuff Muscles (SITS)

A

Supraspinatus, Infraspinatus, Teres Minor, Subscapularis

41
Q

where do all rotator cuff muscles insert

A

humerus

42
Q

rotator cuff muscles generate force needed by contracting _________ to throw something, and apply braking action through ________ contraction

A

concentrically, eccentric

43
Q

Biceps Brachii OIA

A

O: (long head)-supraglenoid tubercle of scapula, (short head)-coracoid process;
I: radial tuberosity;
Action: elbow and shoulder flexion, supination

44
Q

biarticular elbow muscles

A

biceps brachii and triceps brachii

45
Q

Triceps Brachii OIA

A

O: (long head)- infraglenoid tubercle of scapula, (lateral head)- upper lateral-posterior 1/2 of humerus, (medial head)- lower 2/3 of medial posterior humerus;
I:olecranon process;
A: elbow and shoulder extension