exam 4

Question 1

action of teres major muscle on the shoulder

Answer 1

internal rotation

Question 2

what movement of the shoulder is produced by contraction of teres minor

Answer 2

external rotation

Question 2

structure that passes under coracoarcomial arch

Answer 2

supraspinatus tendon

Question 3

which rotator cuff tendon is likely torn if a patient demonstrates weakness in internal rotation

Answer 3

subscapularis

Question 4

which muscle attaches to the coracoid process of the scapula and pulls inferiorly when it contracts

Answer 4

pectoralis minor

Question 4

which muscle helps to stabilize the scapula against the thoracic wall

Answer 4

serratus anterior

Question 5

which ligament stabilizes the long head of biceps tendon at the intertubercular sulcus

Answer 5

transverse humeral ligament

Question 5

which part of the deltoid produces shoulder extension when it contracts

Answer 5

posterior

Question 6

action of infraspinatus muscle on shoulder

Answer 6

external rotation of humerus

Question 7

which ligament stabilizes the acromioclavicular joint by limiting inferior and medial displacement of the acromion distal to the clavicle

Answer 7

coracoclavicular ligaments

Question 8

which muscles adducts and internally rotates shoulder

Answer 8

pectoralis major

Question 9

action of coracobrachialis on the shoulder

Answer 9

flexion

Question 10

action of long head of triceps on shoulder

Answer 10

extension

Question 11

action of rhomboid minor and major on shoulder

Answer 11

scapular retraction

Question 12

action of levator scapulae on scapular rotation

Answer 12

downward rotation

Question 13

the sternoclavicular joint is which type

Answer 13

saddle-type synovial

Question 13

the sternoclavicular joint is the articulation between

Answer 13

upper extremity and axial skeleton

Question 14

the sternal end of the clavicle articulates with

Answer 14

manubrium and 1st rib

Question 15

the sternoclavicular joint is covered with

Answer 15

fibrocartilage

Question 16

the costoclavicular ligament connects from

Answer 16

inferior sternal end
1st rib and costal cartilage

Question 17

joint that provides major axis of rotation for clavicle and scapula

Answer 17

saddle-type toroid

Question 18

the sternoclavicular joint glides freely in which planes

Answer 18

frontal and transverse

Question 19

the sternoclavicular joint allows for rotation in which plane

Answer 19

sagittal

Question 20

the sternoclavicular joint has maximal shoulder elevation in which position

Answer 20

closed-packed position

Question 21

the acromioclavicular joint is which type

Answer 21

planar

Question 22

most horizontal ligament attaching from superior coracoid to trapezoid line on inferior clavicle

Answer 22

trapezoid ligament

Question 23

ligament that is vertical and triangular with apex on caracoid process base to conoid tubercle of clavicle

Answer 23

conoid ligament

Question 24

coracoclavicular joint is which type

Answer 24

syndesmosis-type amphiarthroidal

Question 25

which ligament limits excessive superior glide of coracoclavicular joint

Answer 25

conoid

Question 26

which ligament limits shearing forces that drive acromion medially and ineriorly under the clavicle

Answer 26

trapezoid ligament

Question 27

major suspensory ligament of the shoulder

Answer 27

coracoclavicular ligament

Question 28

the glenohumeral joint is what type

Answer 28

ball-and-socket

Question 29

attaches with fibrocartilaginous tissue and deepens the glenoid cavity

Answer 29

glenoid labrum

Question 30

the glenohumeral joint capsule has two openings for

Answer 30

-long head of biceps tendon -communication between subscapularis bursa and joint

Question 31

tendons of the rotator cuff compared to the coracoacromial arch pass

Answer 31

deep to the arch

Question 32

strong fibro-ossesous arch from acromion to coracoacromial to coracoid process

Answer 32

coracoacromial arch

Question 33

not a true joint, between scapula and its muscles and the posterior thoracic wall

Answer 33

scapulothoracic joint

Question 34

scapulothoracic joint motions depend on

Answer 34

the motions of the sternoclavicular and acromioclavicular joints

Question 35

elevation of the humerus in any plane is paired with what degree of external rotation

Answer 35

55 degrees

Question 36

a regular pattern of scapular rotation that accompanies and facilitates humeral abduction

Answer 36

scapulohumeral rhythm

Question 37

which two joints move simultaneously through most of the full range of shoulder elevation

Answer 37

scapulothoracic glenohumeral

Question 38

180 degrees of abduction comes from

Answer 38

120 degrees glenohumeral (abduction) 60 degrees scapulothoracic (upward rotation)

Question 39

during shoulder abduction the clavicle retracts at the

Answer 39

SC joint

Question 40

during full shoulder abduction the scapula

Answer 40

posteriorly tilts externally rotates

Question 41

during shoulder abduction the clavicle

Answer 41

posteriorly rotates around its own axis

Question 42

during shoulder abduction the GH joint

Answer 42

externally rotates

Question 43

glenohumeral translation is less during

Answer 43

active shoulder motion

Question 44

individuals with muscle fatigue or glenohumeral instability consistently demonstrate

Answer 44

excessive superior glide of the humeral head during active shoulder elevation

Question 45

in abduction of the GH joint in the plane of the scapula, the humeral head undergoes

Answer 45

minimal superior glide

Question 46

the difference in degree of movement between the scapula and clavicle during elevation suggests

Answer 46

they move separately at the AC joint

Question 47

pec major attachments

Answer 47

-sternocostal and medial clavicular head -intertubercular sulcus

Question 48

pec major action

Answer 48

adducts and internally rotates humerus

Question 49

pec major innervation

Answer 49

medial and lateral pec nerves

Question 50

pec minor attachments

Answer 50

3rd-5th ribs coracoid process

Question 51

pec minor action

Answer 51

pulls scapula inferiorly and anteriorly

Question 52

pec minor innervation

Answer 52

medial pec nerve (C8-T1)

Question 53

subclavius attachments

Answer 53

-1st costochondral junction -inferior clavicle

Question 54

subclavius action

Answer 54

stabilizes and depresses clavicle

Question 55

subclavius innervation

Answer 55

nerve to subclavius (C5,C6)

Question 56

serratus anterior attachments

Answer 56

-lateral ribs 1-8 -medial scapula

Question 57

serratus anterior action

Answer 57

protracts and upwardly rotates scapula

Question 58

serratus anterior innervation

Answer 58

long thoracic nerve (C5,C6,C7)

Question 59

trap attachments

Answer 59

-medial 1/3 superior nuchal line and ligament -EOP -lateral 1/3 clavicle -SPs C7-T12 -spine of scapula and acromion

Question 60

all parts of the trap

Answer 60

retract and upwardly rotate the scapula

Question 61

the upper trap alone

Answer 61

elevates scapula

Question 62

the lower trap alone

Answer 62

depresses the scapula

Question 63

trap innervation

Answer 63

spinal accessory (motor) C3 and C4 spinal (sensory)

Question 64

lat attachments

Answer 64

-SP T7-T12 -intertubercular sulcus of humerus -iliac crest/lower ribs/fascia

Question 65

lat action

Answer 65

extends, adducts, and internally rotates humerus

Question 66

lat innervation

Answer 66

thoracodorsal nerve (C6,C7,C8)

Question 67

levator scapulae attachments

Answer 67

-TP C1-C4 -medial border and spine of scapula

Question 68

levator scapulae action

Answer 68

elevates and downwardly rotates scapula

Question 69

levator scapulae innervation

Answer 69

dorsal scapular nerve (C4,C5) cervical nerves (C3,C4)

Question 70

rhomboid major attachments

Answer 70

-SP of T2-T5 -medial border to inferior angle of spine

Question 71

rhomboid major action

Answer 71

retracts and downwardly rotates scapule

Question 72

rhomboid major innervation

Answer 72

dorsal scapular nerve (C4,C5)

Question 73

rhomboid minor

Answer 73

-nuchal ligament -SP C7 and T1 -medial border of scapula

Question 74

rhomboid minor action

Answer 74

retracts and downwardly rotates scapula

Question 75

rhomboid minor innervation

Answer 75

dorsal scapular nerve (C4,C5)