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Anatomy HK 3401 > Back and Shoulders > Flashcards

Back and Shoulders Flashcards

1
Q

Where do extrinsic back muscles originate from/ insert?

A

vertebral column/ upper limb land

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2
Q

What are the 2 bones in the pectoral girdle?

A

clavicle/ scapula

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3
Q

What is another word for scapula?

A

shoulder blade

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4
Q

What is another word for clavicle?

A

collarbone

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5
Q

What are the scapulo-humeral (intrinsic shoulder) muscles?

A

suprapsinatus
infraspinatus
teres minor
subscapularis
deltoid
teres major

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6
Q

What are the posterior axio-appendicular muscles? (thoraco-appendicular)?

A

superficial- trapezius/ latissimus dorsi
deep- levator scapulae/ rhomboid minor + major

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7
Q

What are the 4 muscles in rotator cuff?

A

supraspinatus
infraspinatus
teres minor
subscapularis

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8
Q

What is an the incomplete bony ring that functions for attachment/ support of upper limb?

A

pectoral girdle

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9
Q

What is the T-shaped bone medial chest?

A

sternum

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10
Q

What is the top part of the sternum?

A

manubrium

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11
Q

What is the large bone in the arm?

A

humerus

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12
Q

What does pectoral girdle look like?

A

horseshoe

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13
Q

What is the top edge/ bony structure on scapula?

A

acromion

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14
Q

What is the prominent ridge of bone on the posterior surface of scapula?

A

spine of scapula

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15
Q

What muscle originates from horseshoe?

A

deltoid

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16
Q

What muscle inserts in horseshoe?

A

trapezius

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17
Q

What is the broad area on the anterior side of scapula?

A

subscapular fossa

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18
Q

What is situated on the lateral part of the superior border of the scapula? next to coracoid process of scapula

A

suprascapular notch

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19
Q

What is the small hook-like structure on lateral edge of the superior anterior portion of the scapula?

A

coracoid process of scapula

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20
Q

What does the spine of scapula flatten out laterally into?

A

acromion

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21
Q

What is the broad area on inferior posterior side of scapula?

A

infraspinous fossa

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22
Q

What is the broad area on superior posterior side of scapula?

A

supraspinous fossa

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23
Q

What part of the scapula articulates with the head of the humerus?

A

glenoid cavity

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24
Q

What passes through the suprascapular notch/ by the suprascapular ligament?

A

suprascapular nerve/ artery

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25
What is located between the greater/ lesser tubercles of the proximal humerus?
intertubercular groove
26
What is the midway rounded prominent structure distally down humerus? (not elbow)
deltoid tubersosity
27
What are the bony projections of proximal humerus?
greater/ lesser tubercles (bigger/ smaller)
28
Where does the trapezius originate?
base of skull nuchal ligament spinous processes C7-T12
29
Where does trapezius insert?
lateral 1/3 of clavicle acromion spine of scapula
30
What muscle is responsible for elevation/ retraction/ depression of scapula?
trapezius
31
What happens to the glenoid cavity when trapezius rotates scapula?
goes up
32
What is the innervation of trapezius?
spinal accessory nerve
33
Where is the origin of latissimus dorsi?
spinous processes of lower thoracic vertebrae iliac crest
34
Where does latissimus dorsi insert?
floor (middle) of intertubercular groove of humerus
35
What muscles insert in the intertubercular groove of the humerus?
latissimus dorsi teres major
36
What is the action of latissimus dorsi?
extend humerus at shoulder joint adduct humerus medially rotate humerus raise body during climbing
37
What is the innervation of latissimus dorsi?
thoracodorsal nerve
38
What is the origin of levator scapulae?
transverse processes C1-C4
39
Where is insertion of levator scapulae?
medial border of scapula - at level above spine of scapula
40
What is the action of levator scapulae?
elevate/ rotate scapula
41
What happens to glenoid cavity when levator scapulae rotates scapula?
goes down
42
What is the innervation of levator scapulae?
dorsal scapular nerve
43
What is the origin of rhomboid minor?
spinous processes C7/T1
44
What is the origin of rhomboid major?
spinous processes T2-T5
45
What is the insertion of rhomboid minor?
medial border of scapula - at level of spine of scapula
46
What is the insertion of rhomboid major?
medial border of scapula - at level below spine of scapula
47
What is the action of rhomboid minor/ major?
retract/ rotate scapula
48
What happens to glenoid cavity when rhomboids rotate scapula?
goes down
49
What is the innervation of rhomboid major/ minor?
dorsal scapular nerve
50
What is the menomic for remembering where levator scapulae/ rhomboids originate from?
4 2 2 4 4 - levator scapulae TP C1-C4 2- skip 2 2- rhomboid minor SP C7-T1 4- rhomboid major SP T2-T5
51
Where do the scapulo-humeral muscles originate from/ insert? = intrinsic shoulder muscles
scapulus to humerus
52
What are the muscles of the rotator cuff?
supraspinatus infraspinatus teres minor subscapularis
53
What are the 3 facets of the greater tubercle of proximal humerus?
superior/ middle/ inferior
54
What is the origin of supraspinatus?
supraspinous fossa of scapula
55
Where is insertion of supraspinatus?
greater tubercle of humerus - superior facet
56
What is the action of supraspinatus?
stabilize shoulder joint abduct humerus
57
What is the innervation of supraspinatus?
suprascapular nerve
58
What is the origin of infraspinatus?
infraspinous fossa of scapula
59
Where is the insertion of infraspinatus?
greater tubercle of humerus - middle facet
60
What is the action of infraspinatus?
stabilize shoulder joint laterally rotate humerus
61
What is the innervation of infraspinatus?
suprascapular nerve
62
What muscles contribute to the lateral rotation of the scapula?
infraspinatus (lateral) / latissimus (medial)
63
What is the origin of teres minor?
lateral border of scapula
64
Where is insertion of teres minor?
greater tubercle of humerus - inferior facet
65
What is action of teres minor?
laterally rotate humerus stabilize shoulder joint
66
What is the innervation of teres minor?
axillary nerve
67
What is the origin of subscapularis? (anterior)
subscapular fossa of scapula
68
Where is insertion of subscapularis?
lesser tubercle of humerus
69
What is the action of subscapularis?
medially rotate humerus stabilize shoulder joint
70
What is the innervation of subscapularis?
upper/ lower subscapular nerve
71
From an anterior view what muscles of the rotator cuff do you see?
subscapularis
72
From a posterior view what muscles of the rotator cuff do you see?
supraspinatus infraspinatus teres minor
73
Where does the deltoid originate from?
lateral 1/3 of clavicle acromion of spine spine of scapula
74
Where does deltoid insert?
deltoid tuberosity of humerus
75
What is the function of deltoid (anterior/ middle/ posterior)?
everything humerus related
76
What is the innervation of deltoid?
axillary nerve
77
What is the "little brother" of latissimus dorsi?
teres major
78
What is the origin of teres major?
lateral border of scapula- inferior aspect
79
What is the insertion of teres major?
intertubercular groove of humerus - medial lip

Anatomy HK 3401 (7 decks)

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