Anatomy - Shoulder

Front 1

the clavicle articulates with which structures?

Back 1

acromion, sternum, first rib

Front 2

on which part of the clavicle do the conoid tubercle and trapezoid line lie?

Back 2

undersurface

Front 3

what is unique about the clavicle in embryonic development? By what type of ossification is it formed?

Back 3

it is the first to offisy and it does not ossify by endochondral ossification; it it formed by intramembranous ossification

Front 4

is the coracoid process located medially or laterally to the glenoid cavity?

Back 4

medially

Front 5

which part of the humerus articulates with the glenoid cavity of the scapula?

Back 5

head

Front 6

what are 2 names for the space between the two tubercles of the humerus?

Back 6

intertubercular sulcus or bicipital groove

Front 7

which type of joint is the sternoclavicular?

Back 7

synovial saddle-shaped

Front 8

what is one unique feature of the synovial joint of the sternoclavicular joint?

Back 8

articular disc

Front 9

movement of the clavicle is normally in which directions?

Back 9

AP and vertical (some rotation may occur)

Front 10

what are the names of the 4 ligaments which reinforce the SC joint?

Back 10

anterior and posterior sternoclavicular ligaments, interclavicular ligament (attaches the 2 clavicles by connecting to manubrium), costoclavicular ligament

Front 11

which movement does the synovial joint of the acromioclavicular joint allow?

Back 11

AP, vertical, medial rotation

Front 12

which ligaments are present around the acromioclavicular joint?

Back 12

acromioclavicular ligament, coracoclavicular ligament (anterior to joint and composed of conoid ligament (medial) and trapezoid ligament (lateral))

Front 13

what type of joint is the glenohumeral joint?

Back 13

synovial ball and socket joint

Front 14

which feature of the glenohumeral joint helps to deepen the joint?

Back 14

glenoid labrum

Front 15

the fact that the glenohumeral joint capsule is lax, especially inferiorly, lends to which movement?

Back 15

abduction

Front 16

the subacromial bursa is located between which 2 features of the shoulder?

Back 16

deltoid and supraspinatus tendon and joint capsule

Front 17

what feature of the tendon of long head of biceps allows it to pass through glenohumeral joint?

Back 17

synovial sheath around tendon

Front 18

which 4 ligaments help to strengthen the glenohumeral joint?

Back 18

superior glenohumeral ligament. Inferior glenohumeral ligament, middle glenohumeral ligament, coracohumeral ligament

Front 19

which ligament spans the intertubercular groove to keep the long head of biceps tendon in place?

Back 19

transverse humeral ligament

Front 20

where are the two sites of attachment for the trapezoid ligament?

Back 20

trapezoid tubercle on humerus (inferiorlateral surface) to the coracoid process

Front 21

where are the two sites of attachment for the conoid ligament?

Back 21

conoid tubercle of clavicle to coracoid process

Front 22

where does the deltoid muscle originate? Insert? By what is it innervated? What is its action

Back 22

spine of scapula, lateral clavicle, acromion; deltoid tuberosity; axillary nerve via quadrangular space; abducts the upper limb beyond the initial 15 degrees. Flex (anterior fibers), extend (posterior fibers).

Front 23

where does the supraspinatus muscle originate? Insert? By what is it innervated? What is its action

Back 23

supraspinatus fossa; superior facet of greater tubercle (part of rotator cuff); suprascapular nerve; first 15 degree of abduction

Front 24

where does the infraspinatus muscle originate? Insert? By what is it innervated? What is its action

Back 24

infraspinatus fossa; greater tubercle; suprascapular nerve; laterally rotates humerus

Front 25

where does the teres minor muscle originate? Insert? By what is it innervated? What is its action

Back 25

lateral border of scapula; inferior facet of greater tubercle; axillary nerve; laterally rotates humerus

Front 26

where does the teres major muscle originate? Insert? By what is it innervated? What is its action

Back 26

inferior angle of scapula; intertubercular sulcus; inferior subscapular nerve; medial rotation of humerus and extension of humerus

Front 27

where does the long head of triceps muscle originate? Insert? By what is it innervated? What is its action

Back 27

infraglenoid tubercle; olecranon process of ulna; radial nerve; extensor of elbow, extends humerus, adducts humerus

Front 28

where does the subscapularis muscle originate? Insert? By what is it innervated? What is its action

Back 28

subscapular fossa; lesser tubercle of humerus; inferior and superior subscapular nerve; medial rotation of arm

Front 29

where does the serratus anterior muscle originate? Insert? By what is it innervated? What is its action

Back 29

upper 8-9 ribs; medial border of scapula and inferior angle; long thoracic nerve; protraction and medial rotation of scapula

Front 30

where does the pectoralis major muscle originate? Insert? By what is it innervated? What is its action

Back 30

clavicle and sternum; intertubercular sulcus; lateral pectoral nerve and medial pectoral nerve

Front 31

where does the pectoralis minor muscle originate? Insert? By what is it innervated? What is its action

Back 31

ribs 3-5; coracoid process of scapula; medial pectoral nerve; protracts scapula; pulls tip of shoulder down

Front 32

what are the 4 boundaries of the quadrangular space?

Back 32

teres major, subscapularis, humerus, long head of triceps brachii

Front 33

which arteries and nerves pass through the quadrangular space?

Back 33

axillary nerve, posterior humeral circumflex artery and vein

Front 34

which muscles define the triangular space?

Back 34

teres major, teres minor, tricepr brachii long head

Hint 34

None

Front 35

which vessels and nerves pass through the triangular space?

Back 35

circumflex scapular artery and vein

Front 36

what are the boudaries of the triangular interval? Where does it lie in relationship to the quadrangular space?

Back 36

teres major, humerus, long head of triceps brachii

Front 37

what is included in the triangular interval?

Back 37

radial nerve

Front 38

what bridges the suprascapular notch?

Back 38

suprascapular ligament

Front 39

does the suprascapular nerve go over or under the suprascapular ligament? The suprascapular artery?

Back 39

under; over