Shoulder Flashcards

1
Q

List the extrinsic superficial muscles of the shoulder

A

Trapezius

Latissimus dorsi

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2
Q

Trapezius is composed of 3 parts - descending, transverse and ascending. What is the origin + insertion of descending trapezius?

A

Spinous processes of C1-C7

Lateral 1/3 of clavicle

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3
Q

Trapezius is composed of 3 parts - descending, transverse and ascending. What is the origin + insertion of transverse trapezius?

A

Spinous processes of T1-T4

Medial aspect of acromion

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4
Q

Trapezius is composed of 3 parts - descending, transverse and ascending. What is the origin + insertion of ascending trapezius?

A

Spinous processes of T5-T12

Scapular spine

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5
Q

What is the nerve + arterial supply to trapezius?

A

Spinal accessory nerve

Superficial cervical artery

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6
Q

What is the origin + insertion of latissimus dorsi?

A

Spinous processes of T7-L5/inferior angle of scapula

Lesser tuberosity of humerus

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7
Q

What is the nerve + arterial supply to latissimus dorsi?

A

Thoracodorsal nerve

Branch of subscapular artery

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8
Q

Which movements does latissimus dorsi enable?

A

Arm: adduction, extension, internal rotation

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9
Q

List the extrinsic deep muscles of the shoulder

A

Levator scapulae
Rhomboid major
Rhomboid minor

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10
Q

What is the origin + insertion of levator scapulae?

A

Spinous processes of C1-C4

Medial border of scapula

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11
Q

What is the nerve + arterial supply to levator scapulae?

A

Dorsal scapular nerve

Dorsal scapular artery

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12
Q

What is the origin + insertion of rhomboid minor?

A

Spinous process of C7-T1

Medial border of scapula

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13
Q

What is the nerve + arterial supply to rhomboid minor?

A

Dorsal scapular nerve

Transverse cervical artery

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14
Q

What is the origin + insertion of rhomboid major?

A

Spinous processes of T2-T5

Medial border of scapula

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15
Q

What is the nerve + arterial supply to rhomboid major?

A

Dorsal scapular nerve

Dorsal scapular artery

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16
Q

List the intrinsic muscles of the shoulder

A
Deltoid
Supraspinatus
Infraspinatus
Subscapularis
Teres minor
17
Q

What is the origin + insertion of deltoid?

A

Acromion/lateral clavicle

Deltoid tuberosity of humerus

18
Q

What is the nerve supply to deltoid?

A

Axillary nerve

19
Q

Which movements does deltoid enable?

A

Shoulder: abduction, flexion, extension

20
Q

What is the origin + insertion of supraspinatus?

A

Supraspinatus fossa of scapula

Greater tubercle of humerus

21
Q

What is the nerve supply to supraspinatus?

A

Suprascapular nerve

22
Q

Which movements does supraspinatus enable?

A

Arm: abduction

23
Q

What is the origin + insertion of infraspinatus?

A

Infraspinatus fossa of scapula

Greater tubercle of humerus

24
Q

What is the nerve supply to infraspinatus?

A

Suprascapular nerve

25
Q

Which movements does infraspinatus enable?

A

Arm: external rotation

26
Q

What is the origin + insertion of subscapularis?

A

Subscapular fossa of scapula

Lesser tubercle of humerus

27
Q

What is the nerve supply to subscapularis?

A

Subscapular nerve

28
Q

Which movements does subscapularis enable?

A

Arm: internal rotation

29
Q

What is the origin + insertion of teres minor?

A

Lateral border of scapula

Greater tubercle of humerus

30
Q

What is the nerve supply to teres minor?

A

Axillary nerve

31
Q

Which movements does teres minor enable?

A

Arm: external rotation