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Anatomy Test Three Material > Scapular and Pectoral Region > Flashcards

Scapular and Pectoral Region Flashcards

1
Q

What are the three joints of the shoulder complex?

A

Sternoclavicular, acromioclavicular, and glenohumeral

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2
Q

What is the action of the deltoid muscle?

A

Abducts humerus (1°), flexes, extends and rotates humerus (2°)

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3
Q

What supplies the deltoid muscle?

A

Axillary nerve and posterior circumflex humeral vessels

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4
Q

What is the action of the teres major muscle?

A

Medially rotates and extends humerus

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5
Q

What supplies teres major muscle?

A

Lower subscapular nerve and subscapular vessels

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6
Q

What is the action of the supraspinatus muscle?

A

Abducts humerus the first 15 degrees

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7
Q

What supplies the supraspinatus muscle?

A

Suprascapular nerve, and vessels and dorsal scapular vessels

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8
Q

What is the action of the infraspinatus muscle?

A

Laterally rotates humerus

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9
Q

What supplies the infraspinatus muscle?

A

Suprascapular nerve, and vessels and subscapular vessels

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10
Q

What is the action of the teres minor muscle?

A

Lateral rotation of humerus

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11
Q

What supplies teres minor muscle?

A

Axillary nerve, and suprascapular and subscapular vessels

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12
Q

What is the action of the suprascapular muscle?

A

Medial rotation of the humerus

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13
Q

What supplies the suprascapular muscle?

A

Upper and lower subscapular nn., and subscapular vessels

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14
Q

What are the muscles of the rotator cuff?

A

SITS, Supraspinatus, infraspinatus, teres minor, and subscapularis

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15
Q

What is the subacromial (subdeltoid) bursa?

A

Membranous sac containing lubricating synovial fluid

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16
Q

Where is the subacromial (subdeltoid) bursa located?

A

Inferior to acromion and deltoid but superior to supraspinatus muscle

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17
Q

What is the result of attrition to the spuraspinatus tendon?

A

The capsule becomes continuous with bursa and is painful and limits shoulder movement

18
Q

What are the three spaces of the shoulder region?

A

Quadrangular space, triangular space, and triangular interval

19
Q

What passes through the quadrangular space?

A

Axillary nerve and posterior circumflex humeral artery

20
Q

What passes through the triangular space?

A

Circumflex scapular artery

21
Q

What passes through the triangular interval?

A

Radial nerve and profunda brachii artery

22
Q

What is the superior border of the quadrangular space?

A

Teres minor muscle

23
Q

What is the inferior border of the quadrangular space?

A

Teres major muscle

24
Q

What is the medial border of the quadrangular space?

A

Long head of triceps brachii muscle

25
Q

What is the lateral border of the quadrangular space?

A

Surgical neck of the humerus

26
Q

What is the superior border of the triangular space?

A

Teres minor muscle

27
Q

What is the inferior border of the triangular space?

A

Teres major muscle

28
Q

What is the lateral border of the triangular space?

A

Long head of the triceps brachii muscle

29
Q

What is the superior border of the triangular interval?

A

Teres major muscle

30
Q

What is the medial border of the triangular interval?

A

Long head of triceps brachii muscle

31
Q

What is the lateral border of the triangular interval?

A

Lateral head of the triceps brachii muscle

32
Q

What is the action of pectoralis major muscle?

A

Adducts and medially rotates humerus

33
Q

What supplies pectoralis major muscle?

A

Medial and lateral pectoral nn., and thoracoacromial vessels

34
Q

What is the action of pectoralis minor muscle?

A

Protracts scapular

35
Q

What supplies pectoralis minor muscle?

A

Medial pectoral nerve and thoracoacromial vessles

36
Q

What are the three main arterial supplies of the pectoral region?

A

Lateral thoracic (mammary), internal thoracic (mammary), and thoracoacromial arteries

37
Q

The lateral thoracic (mammary) artery supplies what?

A

Lateral thorax, lateral pectoral region, and lateral breast

38
Q

The internal thoracic (mammary) artery supplies what?

A

Anterior thorax, median pectoral region, and median breast

39
Q

The thoracoacromial artery sends off what four branches?

A

Pectoral, clavicular, acromial, and deltoid arteries

40
Q

The pectoral region is innervated by what four nerves?

A

Cutaneous, median pectoral, lateral pectoral, and long thoracic nerves

Anatomy Test Three Material (12 decks)

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