Anatomy > Upper Extremity 1 > Flashcards

Upper Extremity 1 Flashcards

(64 cards)

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1
Q

Articulations of Clavicle

A

Only connection of axial skeleton to UA

medial: articulates with manubrium–> SC jt
lateral: articulates with the scapula–> Ac jt

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2
Q

Fractures most common on clavicle

A

junction between middle and lateral third

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3
Q

Glenohumeral Joint

A

glenoid fossa of scapula articulates with head of humerus

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4
Q

AC Jt

A

acromium process of SCAPULA articulates with laterl end of CLAVICLE

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5
Q

Acromion

A

deltoid & trapezius attachment

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6
Q

coracoid process

A

short head of biceps brachii, coracobrachialis and pec minor attachment

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7
Q

spine of scapula

A

deltoid & trapezius attachment

wraps around back, clavicle, acromeum, spine (anchor pt for muscle above and below)

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8
Q

Spurpaspinous fossa

A

supraspinatus attachment

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9
Q

infraspinous fossa

A

infraspinatus attachment

rotator cuff muscle lands here

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10
Q

subscapular fossa

A

subscapularis attachment

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11
Q

supraglenoid tuberle

A

attachment sites for long head of biceps brachii

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12
Q

infraglenoid tubercle

A

attachment sites for long head triceps

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13
Q

Greater tubericle of humerus

A

attachment site for external rotators of rotator cuff muscles (supraspinatus, infraspinatus, teres minor muscle)

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14
Q

Lesser tubericle of humerous

A

attachment for internal rotator of rotator cuff muscles

subscapularis

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15
Q

Bicipital groove of humerous

A

attachment of tendon of long head of biceps brachii

also attaches pec major, latissimus dorsi, teres major

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16
Q

Pectoralis Major

A

O- clavicular head–> anterior surface of medial half of clavicle
Sternocostal head–> anterior surface of sternum, superior 6 costal cartilages, aponeurosis of exit oblique

I- lateral lip of intertubercular of humerus

N- lateral & medial pectoral nerves, clavicular head (C5-6), sternal head (C7-T1)

A-adduction and medial rotation of humerus, assists in flex/extension of humerus

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17
Q

Pectoralis Minor

A

O-ribs 3-5 near costal cartilage

I- medial border and superior surface of coracoid process of scap

N- medial pectoral nerve (C8-T1)

A- stabilizes scapula by drawing it inferiorly and anteriorly against thoracic wall (depressed and protracts scap)

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18
Q

Subclavius

A

O- jxn of 1st rib and its costal cartilage

I- inferior surface of middle third of clavicle

N-nerve to subclavius (C5-6)

A- anchors and depresses clavicle

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19
Q

Serratus Anterior

A

O- external surfaces of lateral parts of ribs 1-8

I- anterior surfaces of medial border of scapula

N- long thoracic nerve (C5-7)

A- protracts scapula and holds it against thoracic wall, upward rotation of scapula

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20
Q

Deltopectoral Triangle

A

Deltoid, pec major, clavicle

cephalic veins passes superficial to deep to join with axillary vein

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21
Q

Trapezius

A

attaches shoulder girdle to axial skeleton
upper–> elevate, upward rotation, retraction of scapula

middle–> retraction of scapula

lower–> depression, upward rotation, retraction of scapula

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22
Q

Latissimus dorsi

A

acts on GH joint, indirectly on capulothoracic jt

extends, adducts, medially rotates humerus

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23
Q

Levator Scapulae

A

elevate & downward rotation of scapula (proximal attachment fixed)
lateral flex, ipsilateral rotation of neck (distal attachment fixed)

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24
Q

Rhomboid Major + Minor

A

deep to trap
retract & downward rotation of scapula, stabilize scapula
damage to scapula nerve=scapula deviated laterally from midline

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25
Deltoid
innervated by-->axillary nerve 3 heads--> anterior, middle, posterior synergistically abduct arm, posterior and anterior heads stabilize humerus Anterior- flex & internal rotation of humerus Middle- abducts humerus Posterior head- extends and externally rotates humerus
26
Teres Major
Innervated--> lower subscapular nerve fxn: adducts and internally rotates humerus helps medially rotate humerus w/pec major, pec minor, lats
27
Muscles of the Rotator Cuff
supraspinatus, infraspinatus, teres minor, subscapularis
28
Supraspinatus
P- Supraspinous fossa D- superior facet of greater tuberosity N- suprascapular nerve A- abduct humerus
29
Infraspinatus
P- infraspinus fossa D- inferior to supraspinatus attachment, middle facet of GT N- suprascapular nerve A- works synergistically with teres minor externaly rotate humerus
30
Teres Minor
P- superior portion of laterl border of scapula D- inferior to infraspinatus attachment, inferior facet of GT N- axillary nerve A- works synergistically with infraspinatus to externally rotate
31
Subscapularis
P- subscapulari fossa D- Lesser tuberosity of humerus N- upper and lower subscapularis nerve A- Internal rotation of humerus
32
Upper Triangular Space
superior--> teres minor inferior--> teres major laterla--> long head of tricep contents: circumflex scapular artery
33
Lower Triangle
Superior--> teres major medial--> long head of triceps lateral--> lateral head of tricep contents- radial nerve and deep artery of arm
34
Quadrangular Space
``` superior- teres minor and subscapularis inferior- teres major medial- long head of triceps lateral-surgical neck of humerus contents- axillary nerve and posterior humeral circumflex artery ```
35
Triangle of Auscultation
bordered by trapezius, latissimus dorsi and medial border of scapuka breath sounds heard most cleary
36
Axillary Artery
arises: from subclavian artery begins:outer boarder of first rib ends: inferior border of teres major three portions of axillary artery
37
Brachial Artery
arises from axillary artery begins: inferior border of teres major end: divides into radial and ulna arteries at elbow then goes on to divide into ulna and radial arteries
38
Anastomoses to scapula
suprascapula a, subscapular a, transverse cervical a
39
Anastomoses to Shoulder
anterior & posterior circumflex humeral arteries
40
Anastomoses of elbow and distal humerus
deep artery of arm branches off brachial artery eventually supplies radial collaterals that supply elbow brachial artery supplies ulnar collaterals to supply elbow recurrent arteries of radial and ulna arteries from anastomoses w/above collaterals
41
Lateral cord divides into
musculocutaneous lateral pectoral nerve lateral cord and medial cord merge--> median nerve
42
Medial cord divides into
``` lateral + median cord= median nerve medial pectoral nerve medial brachial cutaneous n medial antebrachial cutaneous n ulnar nerve ```
43
Posterior cord
``` axillary n radial n thoracodorsal n upper subscapular nerve lower subscapular nerve ```
44
coracobrachialis
coracoid process of scapula middle third of medial humerus musculacutaneous nerve flex and adduct arm
45
biceps brachi
P- long head-->supraglenoid tubercle of scapula short head- coracoid process of scapula D- radial tuberosity of radius bicipital aponeurosis musculocutaneous nerve flexes arm and forarm, supinates forearm
46
Brachialis
P- distal half of anterior surface of humerus D- coronoid tuberosity of ulna I-musculocutaneous nerve A- primary flexor of forearm, flexes forearm in all positions (supinated, neutral or pronated)
47
Triceps brachii
P-long head--> infraglenoid tubericle lateral head--> posterior humerus superior to radial groove Medial head--> posterior humerus inferior to radial groove Distal attachments--> olecranon process of ulna I-radial Nerve A-primary extensor of forearm
48
Aconeus
p-(lateral epicondyle) d- olecranon process of ulna I- radial nerve A- assist in forearm extension, stabilize elbow joint
49
Axillary nerve
Emerges from posterior cord, passed through quaff angular space, inner gates deltoid
50
Musculocutaneous nerve
Begins inferior border of pec minor Pierced coracobrachialis, travels between biceps brachii and brachialis Innervates bicep and brachialis Becomes lateral cutaneous of forearm
51
Radial nerve
``` Emerges from posterior cord Posterior to brachial artery Descends with deep artery of arm Travels posterior to humerus Travels between brachialis and brachioradialis ```
52
Median nerve
Emerges from medial and lateral cords Follows brachial artery DOES NOT SUPPLY MUSCLES OF ARM
53
Ulnar Nerve
Emerges from medial cord DOES NOT SUPPLY ARM MUSCLES Travels medial to brachial artery and anterior to triceps
54
AC ligament
Superior and inferior portion of AC joint
55
Coracoclavicular ligament
2 ligaments connect coracoid to scapula Trapezoid-->coracoid to trapezoid line clavicle Conoid--> conoid to conoid tubercle of clavicle
56
Type 1AC joint separation
Partial injury to AC, coracoclavicular is intact
57
Type 2 AC joint separation
Disruption of AC ligament, coracoclavicular still intact
58
Type 3 AC joint separation
Disruption if AC and coracoavicular, clavicle displaced superiorly
59
Glenohumeral ligament
Strengthen anterior aspects of joint | Glenoid to humeral head
60
Coracohumeral ligament
Coracoid process to greater tuberosity
61
Coracoacromial ligament
Forms coracoacromial arch Coracoacromial ligament and acr onion process From actinium to coracoid process
62
Transverse humeral ligament
Bridge over bicipital groove
63
medial epicondyle
attachment site for flexor muscles of forearm
64
lateral epicondyle
attachment site for extensor muscles of forearm

Anatomy (31 decks)

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