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Tri 3 - Gross Anatomy II > E1A > Flashcards

E1A Flashcards

Axioappendicular Scapulohumeral Muscles (54 cards)

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1
Q

posterior axioappendicular muscles

A

trapezius
latissimus dorsi
levator scapulae
rhomboids major/minor

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2
Q

anterior axioappendicular muscles

A

pectoralis major/minor
subclavius
serratus anterior

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3
Q

pectorals major origin

A

clavicular: medial half clavicle
sternocostal: sternum, upper 6 costal cartilages
abdominal: aponeurosis of EO muscle

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4
Q

pectoralis major insertion

A

intertubercular groove (lateral) of humerus (greater tubercle)

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5
Q

pectoralis major innervation

A

medial and lateral pectoral nerves

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6
Q

pectoralis major action

A

flexion, adduction, medial rotation of arm

assists in forced inspiration

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7
Q

pectoralis minor origin

A

ribs 3, 4, 5

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8
Q

pectoralis minor insertion

A

coracoid process

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9
Q

pectoralis minor innervation

A

medial pectoral nerve

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10
Q

pectoralis minor action

A

protraction, inferior rotation of scapula

assists in forced inspiration

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11
Q

subclavius origin

A

1st rib/costal cartilage

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12
Q

subclavius insertion

A

inferior surface of middle third of clavicle

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13
Q

subclavius innervation

A

nerve to subclavius

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14
Q

subclavius action

A

depresses clavicle

braces clavicle against sternum

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15
Q

serratus anterior origin

A

external surface of upper 8-9 ribs

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16
Q

serratus anterior insertion

A

anterior surface of medial border/inferior angle of scapula

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17
Q

serratus anterior innervation

A

long thoracic nerve

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18
Q

serratus anterior action

A

protracts scapula, holds against thoracic wall

rotates scapula superiorly (full abduction of arm)

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19
Q

serratus anterior paralysis

A

winged scapula

medial border and inferior angle protrude posteriorly

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20
Q

scapulohumeral (intrinsic) muscles

A 
deltoid
supraspinatus
infraspinatus
teres major/minor
subscapularis
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21
Q

deltoid origin

A

clavicular: lateral 1/3 of clavicle
acromial: acromion
spinal: spine of scapula

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22
Q

deltoid insertion

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A

deltoid tuberosity (lateral surface of shaft)

23
Q

deltoid innervation

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A

axillary nerve

24
Q

deltoid action

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A 
abduction of arm
medial rotation (anterior fibers)
lateral rotation (posterior fibers)
25
supraspinatus origin
supraspinatus fossa of scapula
26
supraspinatus insertion
greater tubercle of humerus (upper facet)
27
supraspinatus innervation
suprascapular nerve
28
supraspinatus action
stabilize shoulder joint | initiates/assists deltoid in abduction
29
infraspinatus origin
infraspinatus fossa of scapula
30
infraspinatus insertion
greater tubercle of humerus (middle facet)
31
infraspinatus innervation
suprascapular nerve
32
infraspinatus action
stabilize shoulder joint | lateral rotation of arm
33
teres minor origin
middle lateral border scapula
34
teres minor insertion
greater tubercle of humerus (lower facet)
35
teres minor innervation
axillary nerve
36
teres minor action
stabilize shoulder joint | lateral rotation of arm
37
teres major origin
lower lateral border, posterior inferior angle of scapula
38
teres major insertion
intertubercular groove (medial lip) of humerus (lesser tubercle)
39
teres major innervation
lower subscapular nerve
40
teres major action
medial rotation, extension, adduction of arm
41
subscapularis origin
subscapular fossa
42
subscapularis insertion
lesser tubercle of humerus
43
subscapularis action
stabilize shoulder joint | medial rotation of arm
44
rotator cuff
supraspinatus (superiorly) infraspinatus (posteriorly) teres minor (posteriorly) subscapularis (anteriorly)
45
quadrangular space
communicates axilla with posterior aspect of shoulder
46
quadrangular space boundaries
superior: teres minor inferior: teres major medial: LH biceps lateral: humerus
47
quadrangular space function
transmits axillary nerve and posterior circumflex humeral vessels
48
triangular space | upper triangular
smaller space located medial to quadrangular space
49
triangular space boundaries
superior: teres minor inferior: teres major lateral: LH biceps
50
triangular space function
transmits circumflex scapular vessels
51
triangular interval boundaries | lower triangular space
superior: teres major medial: LH triceps lateral: shaft of humerus
52
triangular interval function
transmit radial nerve and profunda brachii vessels to reach posterior compartment of arm
53
axillary nerve
originates from posterior cord of brachial plexus in axilla ventral rami of C56 passes posteriorly through quadrangular space inferior to shoulder joint
54
axillary nerve branches
muscular: deltoid, teres minor articular: shoulder joint cutaneous: upper lateral cutaneous nerve

Tri 3 - Gross Anatomy II (20 decks)

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