Gross Anatomy - Unit 1-3: Scapular and Intermediate Back

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Last updated 1:40 AM on 6/15/26
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74 Terms

1
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Supraspinatus, Infraspinatus, teres minor, subscapularis

SITS stands for what? The hand positions represent the attachment points on the humerus.

<p>SITS stands for what? The hand positions represent the attachment points on the humerus.</p>
2
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CN XI

what is the nerve which innervates muscle 1?

<p>what is the nerve which innervates muscle 1?</p>
3
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C4-C5

What is the nerve which innervates muscle 2?

<p>What is the nerve which innervates muscle 2?</p>
4
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C4-C5

What is the nerve which innervates muscle 3?

<p>What is the nerve which innervates muscle 3?</p>
5
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C4-C6

what is the nerve which innervates muscle 4?

<p>what is the nerve which innervates muscle 4?</p>
6
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C5-C6

what is the nerve which innervates muscle 5?

<p>what is the nerve which innervates muscle 5?</p>
7
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C5-C6

what is the nerve which innervates muscle 6?

<p>what is the nerve which innervates muscle 6?</p>
8
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C6-C8

what is the nerve which innervates muscle 7?

<p>what is the nerve which innervates muscle 7?</p>
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infraspinatous

what is muscle 1?

<p>what is muscle 1?</p>
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teres minor

what is muscle 2?

<p>what is muscle 2?</p>
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subscapularis

what is muscle 3?

<p>what is muscle 3?</p>
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supraspinatus

what is muscle 4?

<p>what is muscle 4?</p>
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teres minor

what is image 5?

<p>what is image 5?</p>
14
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infraspinatus

what is image 6?

<p>what is image 6?</p>
15
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supraspinatus

what is image 7?

<p>what is image 7?</p>
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glenoid cavity

what is image 8?

<p>what is image 8?</p>
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Holds humerus head in glenoid cavity of the scapula

what is the function of the Teres minor, infraspinatus, supraspinatus, and the subscapularis?

18
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proprioception

what is the most likely function of the serratus posterior?

<p>what is the most likely function of the serratus posterior?</p>
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serratus posterior superior

what is image 1?

<p>what is image 1?</p>
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serratus posterior inferior

what is image 2?

<p>what is image 2?</p>
21
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dorsal rami

the intrinsic back/epaxial muscles are innervated by the ... ...

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splenius

the superficial layer of the deep back muscles is what?

<p>the superficial layer of the deep back muscles is what?</p>
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erector spinae

the intermediate layer of the deep back muscles is what?

<p>the intermediate layer of the deep back muscles is what?</p>
24
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spinalis, longissimus, iliocostalis

what are the three erector spinae muscles from medial to lateral?

<p>what are the three erector spinae muscles from medial to lateral?</p>
25
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lateral flexion of the vertebral column

unilateral action of the erector spinae

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extension of vertebral column

bilateral extension of the erector spinae

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rotates head toward ipsilateral side

what action is unique to the longissimus capitis from the erector spinae muscles?

<p>what action is unique to the longissimus capitis from the erector spinae muscles?</p>
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lateral felxion and rotation towards ipsilateral side of head and neck

unilateral actions of the splenius

<p>unilateral actions of the splenius</p>
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extension of head and neck

bilateral action of the splenius

<p>bilateral action of the splenius</p>
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Common causes of shoulder pain

Repetitive use of arm above horizontal ( > 90 abduction) - tendons impinged on by bones. Irritation and inflammation of tendons -> degeneration (tendinitis, impingement, tear)

31
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shoulder injuries lead to

lack of shoulder stability, difficulty controlling adduction, initiating abduction (supraspinatus)

32
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glenohumeral dislocation

the inferior part of the joint capsule is the weakest - it is not reinforced by rotator cuff muscle

<p>the inferior part of the joint capsule is the weakest - it is not reinforced by rotator cuff muscle</p>
33
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anterior dislocation

when the humeral head dislocates though inferior part of joint capsule, muscle may pull the humeral anteriorly and superiorly, often occurs when arm is abducted and externally rotated.

34
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dorsal scapula artery

what is artery 1?

<p>what is artery 1?</p>
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suprascapular artery

what is artery 2?

<p>what is artery 2?</p>
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axillary artery

what is artery 3?

<p>what is artery 3?</p>
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subscapular artery

what is artery 4?

<p>what is artery 4?</p>
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circumcumflex scapular artery

what is artery 5?

<p>what is artery 5?</p>
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thoracodorsal artery

what is artery 6?

<p>what is artery 6?</p>
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Dont Stop Counting Turtles

Pneumonic for major arteries to the shoulder

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dorsal scapular artery

thyrocervical trunk -> suprascapular artery

subclavian artery ->

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subcapular artery -> cicumflex scapular artery

subcapular artery -> thoracodorsal artery

axillary artery ->

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anastomoses

connects between blood vessels

44
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dorsal scapular and suprascapular aa.

anastomoses of the supraspinous fossa

<p>anastomoses of the supraspinous fossa</p>
45
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dorsal scapular, suprascapular and circumflex scapular aa.

anastomoses of the upper infraspinous fossa

<p>anastomoses of the upper infraspinous fossa</p>
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dorsal scapular, circumflex scapular, thoracodorsal aa.

anastomoses of the lwer infraspinous fossa

<p>anastomoses of the lwer infraspinous fossa</p>
47
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dorsal scapular and thoracodorsal aa.

anastomoses of tthe subscapular fossa and the inferior angle

<p>anastomoses of tthe subscapular fossa and the inferior angle</p>
48
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suprascapular artery

this artery is superficial to the superior transvernse scapular ligament, while the suprascapular nerve travels deep to ligament

<p>this artery is superficial to the superior transvernse scapular ligament, while the suprascapular nerve travels deep to ligament</p>
49
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Suprascapular artery and nerve

this a. and n. are deep to supraspinatus, around lateral border of the scapular spine, deep to infraspinatus

<p>this a. and n. are deep to supraspinatus, around lateral border of the scapular spine, deep to infraspinatus</p>
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C7

vert level 1?

<p>vert level 1?</p>
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T1

vert level 2?

<p>vert level 2?</p>
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T1-T2

vert level 3?

<p>vert level 3?</p>
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T3

vert level 4?

<p>vert level 4?</p>
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T7

vert level 5?

<p>vert level 5?</p>
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T9

vert level 6?

<p>vert level 6?</p>
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L1-L2

vert level 7?

<p>vert level 7?</p>
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L4

vert level 8?

<p>vert level 8?</p>
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S2

vert level 9?

<p>vert level 9?</p>
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scapula

what is image 1?

<p>what is image 1?</p>
60
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clavicle

what is image 2?

<p>what is image 2?</p>
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levator scapulae

what is image 3?

<p>what is image 3?</p>
62
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deltoid

what is image 4?

<p>what is image 4?</p>
63
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rhomboid minor

what is image 5?

<p>what is image 5?</p>
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rhomboid major

what is image 6?

<p>what is image 6?</p>
65
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trapezius

what is image 7?

<p>what is image 7?</p>
66
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supraspinatus

what is image 8?

<p>what is image 8?</p>
67
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infraspinatus

what is image 9?

<p>what is image 9?</p>
68
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humerus

what is image 1?

<p>what is image 1?</p>
69
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clavicle

what is image 2?

<p>what is image 2?</p>
70
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subscapularis

what is image 3?

<p>what is image 3?</p>
71
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deltoid

what is image 4?

<p>what is image 4?</p>
72
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rhomboid major

what is image 5?

<p>what is image 5?</p>
73
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trapezius

what is image 6?

<p>what is image 6?</p>
74
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infraspinatus

what is image 7?

<p>what is image 7?</p>