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Anatomy > Shoulder > Flashcards

Shoulder Flashcards

1
Q

What is the bony support of the shoulder?

A

pectoral girdle = clavicle + scapula

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2
Q

What is the arterial supply of the shoulder?

A
  • branches of the axillary art. from the subclavian art.
  • pectoral branches of thoracoacromial art.
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3
Q

What is the innervation of the shoulder?

A

branches of the brachial plexus

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4
Q

What are the branches of the axillary artery? (S.T.L.S.A.)

A
  • superior thoracic art. (1st branch)
  • thoracoacromial art. (2nd branch)
  • lateral thoracic (2nd branch)
  • subscapular (3rd branch)
  • ant. and post. humeral circumflex (3rd branch)
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5
Q

What are the branches of the subclavian artery? (V.I.D.C.T.)

A
  • vertebral art.
  • internal thoracic art.
  • thyrocervical trunk
  • costocervical trunk
  • dorsal scapular art.
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6
Q

What are the thoracoacromial branches of the axillary artery? (P.A.C.D)

A
  • acromial
  • clavicular
  • deltoid
  • pectoral
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7
Q

Where does the cephalic vein run through between the deltoid and pectoralis major?

A

deltopectoral groove

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8
Q

What does the thyrocervical trunk of the subclavian art. split into?

A

suprascapluar and transverse cervical art.

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9
Q

What do the branches of the thoracoacromial art. form?

A

an anastomosis

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10
Q

What does the subscapular artery split into?

A

thoracodorsal and circumflex scapular

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11
Q

What are the arteries that supply the post. shoulder?

A
  • dorsal scapular
  • suprascapular
  • scapular circumflex
  • post. humeral circumflex
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12
Q

What are the superficial muscles of the shoulder?

A
  • pectoralos major
  • deltoid
  • trapezius
  • lat. dorsi
  • subclavius
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13
Q

What are the deep muscles of the shoulder?

A
  • pec. major
  • coricobrachialis
  • biceps brachii
  • serr. ant.
  • rhomboids major & minor
  • levator scapulae
  • teres major
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14
Q

What are the medial attachments of the pectoralis major?

A
  • sternum
  • medial 1/3 of clavicle
  • costal cartilages of ribs 2-6
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15
Q

What is the distal attachment of the pectoralis major?

A

lateral ridge of intertubercular groove

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16
Q

What is the arterial supply of the pectoralis major?

A

pectoral branches of thoracoacromial art.

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17
Q

What is the innervation of the pectoralis major?

A

medial and lateral pectoral nerves

18
Q

What vein separates the pectoralis major from the deltoid?

A

cephalic vein

19
Q

What are the proximal attachments of the deltoid?

A
  • lateral 1/3 of calvicle
  • acromion
  • spine of scapula
20
Q

What is the distal attachments of the deltoid?

A

deltoid tuberosity

21
Q

What is the arterial supply of the deltoid?

A

deltoid branch of thoracoacromial art. and post. humeral circumfelx art.

22
Q

What is the innervation of the deltoid?

A

axillary nerve from post. branch of brachial plexus

23
Q

What are the boundaries of the quadrangular space?

A
  • lateral: shaft of humerus
  • medial: long head of triceps brachii
  • superior: teres minor
  • inferior: teres major
24
Q

What 3 parts is the axillary artery divided into?

A
  1. medial pec. minor
  2. beneath pec. minor
  3. lateral to pec. minor
25
Q

What runs through the quadrangular space?

A
  • axillary nerve
  • post. humeral circumflex art.
26
Q

What is the proximal attachment of the pectoralis minor?

A

surfaces of ribs 3-5

27
Q

What is the distal attachment of the pectoralis minor?

A

coracoid process

28
Q

What is the arterial supply of the pectoralis minor?

A

pectoral branch from the thoracoacromial art.

29
Q

What is the innervation of the pectoralis minor?

A

med. pectoral nerve from med. cord of brachial plexus

30
Q

What is the proximal attachment of the serratus anterior?

A

lateral surface of ribs 1-8

31
Q

What is the distal attachment of the serratus anterior?

A

vertebral border of scapula

32
Q

What is arterial supply of the serratus anterior?

A

lat. thoracic art.

33
Q

What is the innervation of the serratus anterior?

A

long thoracic nerve

34
Q

What are the muscles of the rotator cuff?

A
  • subscapularis (ant. scapula)
  • infraspinatus (post. scapula)
  • teres minor (post scapula)
  • supraspinatus (popst. scapula)
35
Q

What is the arterial supply of the rotator cuff?

A

suprascapular art.

36
Q

What is the innervation of the rotator cuff?

A

suprascapular nerve

37
Q

What are the functions of the rotator cuff muscles?

A
  • protect GH joint capsule
  • provide stability for GH joint
  • hold large head of humerus in shallow glenoid fossa
  • act as primary movers for abduction and rotation
38
Q

The deltoid and supraspinatus do what percentage of abduction?

A
  • deltoid -> 90%
  • supra. -> 10%
39
Q

What rotator cuff muscle is commonly torn due to location and vascularity?

A

supraspinatus

40
Q

What is the most common rotator cuff injury?

A

tendonitis caused by GH joint instability

41
Q

What is brachial plexus (Erbs) palsy?

A
  • weakness/paralysis as result of damage to brachial plexus during childbirth
  • damage occurs to nerve roots C5& C6 -> ulnar is only nerve not affected

Anatomy (23 decks)

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