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Anatomy UE > Shoulder Pectoral Region > Flashcards

Shoulder Pectoral Region Flashcards

1
Q

Which fascia superiorly attaches to the clavicle and sternum and is continuous inferiorly with the fascia of the anterior abdominal wall

A

Pectoral Fascia

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2
Q

Pectoral fascia will invest into which muscle?

A

Invests into the pectoralis major m.

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3
Q

Axillary fascia is a continuation of _____ fascia laterally.

A

Pectoral fascia

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4
Q

Which fascia will form the floor of the axilla?

A

Axillary fascia

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5
Q

Which fascia is deep to pectoralis major muscle?

A

Clavipectoral fascia

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6
Q

Clavipectoral fascia will decscend from clavicle and encloses ___ m. and ___ m.

A

Subclavius m. and pectoralis minor m.

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7
Q

Which fascia extend inferior to pectoralis minor becomes suspensory ligament of the axilla?

A

Clavipectoral fascia

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8
Q

Which fascia pulls the skin of the axilla superiorly with shoulder abduction

A

Clavipectoral fascia

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9
Q

What fascia covers the superficial surface of the deltoid m.?

A

Deltoid facia

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10
Q

Deltoid fascia is continuous with the pectoral fascia _____ and with the infraspinous fascia _____.

A

Anteriorly; posteriorly

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11
Q

Which fascia descends from the spine of the scapula and covers the infraspinatus m.?

A

Infraspinous fascia

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12
Q

Which fascia ascends from the spine of the scapula to cover the supraspinatus m.?

A

Supraspinous fascia

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13
Q

Are cutaneous nerves part of the brachial plexus?

A

No!

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14
Q

Which cutaneous nerve supplies skin over the clavicle, and superolateral part of pectoralis major m.?

A

Supraclavicular Nerve (C3-C4)

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15
Q

Superior Lateral Brachial Cutaneous Nerve (C5-C6) is a cutaneous branch of which nerve?

A

Axillary n.

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16
Q

Which cutaneous nerve supplies skin over the deltoid m.?

A

Superior Lateral Brachial Cutaneous Nerve (C5-C6)

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17
Q

What are the 5 muscles that connect the upper extremity to the spine?

A
  • Trapezius
  • Latissimus dorsi
  • Rhomboid major
  • Rhomboid minor
  • Levator scapulae
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18
Q

What 4 muscles will connect the upper extremity to the anterior thoracic wall?

A
  • Pectoralis major
  • Pectoralis minor
  • Subclavius
  • Serratus anterior
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19
Q

What are the 6 muscles that originate from the scapula?

A
  • Deltoid
  • Subscapularis
  • Supraspinatus
  • Infraspinatus
  • Teres minor
  • Teres major
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20
Q

Pectoralis major muscle is a large fan-shaped muscle that covers most of the _____wall, anterior wall of _____, anterior _____.

A

Anterior thoracic wall; Axilla; Axillary fold

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21
Q

What are the two heads of pectoralis major m.?

A

Clavicular head and sternocostal head.

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22
Q

Can each pectoralis major m’s head act independently?

A

Yes!

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23
Q

Independently, the clavicular head by itself can _____.

A

Help flex the humerus

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24
Q

Independently, the sternocostal head by itself will _____.

A

Help extend an already flexed humerus

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25
Q

When abducting arm at 90 degrees and horizontally adduct against resistance, you are checking which head of the pectoralis major m.?

A

Clavicular head

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26
Q

When abduct arm to 60º and horizontally adduct against resistance, you are checking which head of the pectoralis major m.?

A

Sternocostal head

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27
Q

This muscle is an important landmark in axilla.

A

Pectoralis minor m.

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28
Q

Pectoralis minor m. with the_____ it forms a tunnel for the nerves and vessels of the UE

A

Coracoid process

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29
Q

Which muscle protects subclavian a. when clavicle fractures?

A

Subclavius m.

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30
Q

Which muscle covers the lateral portion of the thoracic cage, medial wall of axilla?

A

Serratus anterior m.

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31
Q

Which muscle is referred to as the “boxer’s muscle”-punching?

A

Serratus anterior m.

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32
Q

Serratus anterior m. is a primary _____ of the scapula.

A

Stabilizer

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33
Q

What are the 3 parts of the deltoid muscle?

A

Anterior, Posterior and Middle

34
Q

Which part(s) of the deltoid muscle is unipennate?

A

Anterior and posterior part

35
Q

Which part of the deltoid muscle is multipennate?

A

Middle part

36
Q

Because of the _____ of deltoid it cannot initiate abduction of the humerus.

A

Pull (Ant, Mid, Post). Doesn’t have a lateral head.

37
Q

What are the rotator cuff muscles?

A 
(SITS): 
Supraspinatus
Infraspinatus
Teres minor
Subscapularis
38
Q

The tendons of the SITS mm. blend with the _____, thus strengthening the capsule

A

Glenohumeral capsule

39
Q

SITS mm. also help to hold the _____ in the shallow glenoid cavity. Strengthens the joint while still allowing a large amount of motion.

A

Head of the humerus

40
Q

Supraspinatus m. also acts strongly to prevent _____ of the humerus under loads.

A

Downward displacement

41
Q

_____ m. most frequently diseased or torn concerning the rotator cuff injury.

A

Supraspinatus m.

42
Q

Test for injury/disease: from 90 degree abduction, lower limb. Uncontrolled drop indicates damage. This is testing for what injury?

A

Rotator cuff injury

43
Q

What are the borders of quadrangular space?

A

Teres minor superiorly
Teres major inferiorly
Humerus laterally
Long head of triceps brachii medially

44
Q

What structures are exiting the quadrangular space?

A

-Axillary nerve (C5-C6) which innervates teres minor and deltoid mm.
-Posterior circumflex humeral artery
Branch of the axillary artery.

45
Q

What are the borders of the triangular space?

A

Teres minor superiorly
Teres major inferiorly
Long head of triceps brachii laterally

46
Q

What are the contents that are running WITHIN the triangular space (does not pierce or exit the space)?

A

Circumflex scapular artery

47
Q

Circumflex scapular artery is a branch off the _____ a.

A

Subscapular a.

48
Q

What are the borders of the triangular interval?

A
  • Superior by teres major
  • Lateral by the lateral head of triceps brachii m.
  • Medial by the long head of triceps brachii m.
49
Q

Extending across the floor of the triangular interval is the _____ and _____

A

Radial nerve and the deep brachial artery

50
Q

Axillary region is a pyramid-shaped space inferior to the _____ joint and superior to the _____.

A

Glenohumeral joint; axillary fascia

51
Q

The _____ serves as a protected passageway for the neurovascular structures from the neck to the upper limb.

A

Axilla

52
Q

Axilla has an ___, ___, and ___ walls.

A

Apex, base, and four walls (three of which are muscular)

53
Q

Apex is the _____ canal.

A

Cervicoaxillary canal

54
Q

The_____ (Apex) is bounded by the 1st rib, clavicle, and superior edge of the scapula.

A

Cervicoaxillary canal

55
Q

The_____ (of the axilla) is formed by the concave skin, subcutaneous tissue, and axillary fascia?

A

Base

56
Q

The base of axilla forms the _____.

A

Axillary fossa (armpit)

57
Q

The _____ (of the axilla) is formed by the pectoralis major and minor mm along with the pectoral and clavipectoral fasciae

A

Anterior wall of the axillary

58
Q

The _____ (of the axilla) is formed by the scapula and the subscapularis muscle.

A

Posterior wall

59
Q

The _____ (of the axilla) is formed by the thoracic wall, 1st-4th ribs. Serratus anterior covers the ribs.

A

Medial wall

60
Q

The _____ (of the axilla) is formed by the intertubercular groove of the humerus.

A

Lateral wall

61
Q

Axillary artery is the continuation of the _____.

A

Subclavian artery

62
Q

Axillary artery begins at the lateral border of the 1st rib and extends to the inferior border of _____.

A

Teres major m.

63
Q

Axillary artery passes deep to _____ muscle.

A

Pectoralis minor muscle

64
Q

Axillary artery continues down the arm as the _____.

A

Brachial artery

65
Q

Axillary artery becomes brachial artery after passing _____.

A

Inferior border of teres major m.

66
Q

The artery is divided into 3 parts,

what is the point of reference?

A

Pectoralis minor m.

67
Q

The first part of divided axillary artery is proximal to pectoralis minor m., but distal to the _____.

A

1st rib

68
Q

The second part of divided axillary artery is is under _____.

A

Pectoralis minor m.

69
Q

The second part of divided axillary artery is _____ to pectoralis minor m.

A

Distal

70
Q

First part of the axillary artery extends from 1st rib to _____ border of pectoralis minor.

A

Proximal

71
Q

First part of the axillary artery has one branch; _____.

A

Supreme thoracic artery

72
Q

What artery supplies the subclavius m., superior slips of serratus anterior m., and some of the overlying pectoralis mm.?

A

Supreme thoracic artery

73
Q

Second part of the axillary artery has 2 branches:

A 
Thoracoacromial artery (Has 4 branches)
Lateral thoracic artery
74
Q

What are the 4 branches of thoracoacromial a?

A 
(CAPD)
Clavicular
Acromial
Pectoral
Deltoid
75
Q

Third part of the axillary artery has 3 branches:

A

Subscapular, anterior circumflex humeral, and posterior circumflex humeral arteries

76
Q

Subscapular artery descends along the ___ border of subscapularis m.

A

Lateral

77
Q

Subscapular artery will branch into two arteries:

A
  • Circumflex scapular artery (triangular space)

- Thoracodorsal artery

78
Q

Anterior circumflex humeral artery runs laterally deep to the coracobrachialis m. and the _____.

A

Biceps brachii m.

79
Q

Posterior circumflex humeral artery passes medial to the humerus where it pierces the _____ space to perfuse the deltoid, teres minor, teres major, and long head of triceps brachii

A

Quadrangular space

80
Q

Both ant. and post. circumflex humeral arteries encircle the _____ of the humerus and anastomose with each other.

A

Surgical neck

Anatomy UE (10 decks)

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