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Phls 401 > The Back > Flashcards

The Back Flashcards

1
Q

Origin of trapezius

A

Medial 1/3 of superior nuchal line; external occipital protuberance; nuchal ligament; spinous processes of c7-t12 vertebrae

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2
Q

Insertion of trapezius

A

Lateral 1/3 of clavicle; acromion and spine of scapula

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3
Q

Innervation of trapezius

A

Accessory nerve (11th cranial nerve)

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4
Q

Action of trapezius

A

Elevation, retraction and rotation of the scapula

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5
Q

Blood supply of trapezius

A

Transverse cervical artery

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6
Q

Origin of latissimus dorsi

A

Spinous processes of t7-12, thoracolumbar fascia, iliac crest

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7
Q

Insertion of latissimus dorsi

A

Intertubercular groove of humerus

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8
Q

Innervation of latissimus dorsi

A

Thoracodorsal nerve (lower subscapular nerve)

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9
Q

Action of latissimus dorsi

A

Adduction, extension and medial rotation of the arm

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10
Q

Blood supply of latissimus dorsi

A

Thoracodorsal artery

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11
Q

Origin of Levator Scapulae

A

Transverse processes of C1-C4

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12
Q

Insertion of Levator Scapulae

A

Insertion of medial border of scapula

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13
Q

Innervation of Levator scapulae

A

Dorsal scapular nerve

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14
Q

Action of Levator Scapulae

A

Elevates the scapula

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15
Q

Blood supply of Levator scapulae

A

Dorsal scapular artery

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16
Q

Origin of Rhomboid Major

A

T2-T5 spinous processes

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17
Q

Insertion of Rhomboid Major

A

Medial border of scapula below the spine of scapula

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18
Q

Innervation of Rhomboid Major

A

Dorsal scapular nerve

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19
Q

Action of Rhomboid Major

A

Retracts scapula

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20
Q

Blood supply of Rhomboid Major

A

Dorsal Scapular Artery

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21
Q

Origin of Rhomboid Minor

A

C7 and T1 spinous processes

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22
Q

Insertion of Rhomboid Minor

A

Medial border of scapula

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23
Q

Innervation of Rhomboid Minor

A

Dorsal scapular nerve

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24
Q

Action of Rhomboid Minor

A

Retracts scapula

25
Q

Blood supply of Rhomboid Minor

A

Dorsal scapular artery

26
Q

Origin of Deltoid

A

Clavicle, acromion, and spine of scapula

27
Q

Insertion of Deltoid

A

Deltoid tuberosity of humerus

28
Q

Innervation of Deltoid

A

Axillary nerve

29
Q

Blood supply of Deltoid

A

posterior circumflex numeral artery

30
Q

Action of Deltoid

A

Flexion and abduction of the arm

31
Q

Origin of Supraspinatus

A

Supraspinatus fossa of scapula

32
Q

Insertion of Supraspinatus

A

Greater tubercle of the humerus

33
Q

Innervation of Supraspinatus

A

Suprascapular nerve

34
Q

Action of Supraspinatus

A

Abduction of arm

35
Q

Blood supply of Supraspinatus

A

Suprascapular artery

36
Q

Origin of Infraspinatus Muscle

A

Infraspinatus fossa of scapula

37
Q

Insertion of Infraspinatus Muscle

A

Greater tubercle of humerus; middle 1/3

38
Q

Innervation of Infraspinatus Muscle

A

Suprascapular nerve

39
Q

Action of Infraspinatus Muscle

A

Laterally rotates arm; rotator cuff muscle

40
Q

Blood Supply of Infraspinatus Muscle

A

Suprascapular artery and circumflex scapular

41
Q

Origin of Teres Minor

A

Middle part of lateral border of scapula

42
Q

Insertion of Teres Minor

A

Greater tubercle of humerus; inferior 1/3

43
Q

Innervation of Teres Minor

A

Axillary Nerve

44
Q

Action of Teres Minor

A

Laterally rotates the arm; rotator cuff muscle

45
Q

Blood supply of Teres Minor

A

Posterior circumflex humoral and circumflex scapular artery

46
Q

Origin of Subscapularis

A

Subscapular fossa

47
Q

Insertion of Subscapularis

A

Lesser tubercle of humerus

48
Q

Innervation of Subscapularis

A

Upper and lower subscapular nerves

49
Q

Action of Subscapularis

A

Medial rotation and addiction of the arm; rotator cuff muscle

50
Q

Blood supply of Subscapularis

A

Subscapular artery

51
Q

Origin of Teres Major

A

Posterior surface of inferior angle of scapula

52
Q

Insertion of Teres Major

A

Medial lip of intertubercular groove of humerus

53
Q

Innervation of Teres Major

A

Lower subscapular nerve

54
Q

Action of Teres Major

A

Adducts and medically rotates arm

55
Q

Blood Supply of Teres Major

A

Subscapular artery and circumflex scapular arteries

56
Q

Which muscles make up the rotator cuff?

A

Supraspinatus, infraspinatus, subscapularis, Teres minor (SITS)

57
Q

What is the triangle of auscultation?

A

Area on the back where muscle layers are thinner; good for listening to the lungs

58
Q

What are the borders of the triangle of ausculation?

A

Superior: Trapezius
Medial: Latissimus Dorsi
Lateral: Scapula

Phls 401 (1 decks)

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