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MRCS anatomy > UL: Axilla > Flashcards

UL: Axilla Flashcards

1
Q

Branches of axillary artery

A

1st part: Superior thoracic artery

2nd part: Thoraco-acromial artery, lateral thoracic artery

3rd part: subscapular artery, anterior and posterior circumflex humeral artery

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2
Q

Which muscles splits axillary artery in 3 parts

A

pec minor

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3
Q

Branches of axillary artery

A

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Superior thoracic artery
Thoracoacromial artery
Lateral thoracic artery
Subscapular artery
Anterior humeral circumflex artery
Posterior humeral circumflex artery

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4
Q

Anterior wall of axilla made off

A

Pec major

Pec minor

Subclavius

Clavicopectoral fascia

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5
Q

Origin and insertion of pec major

A

Origin: Clavicle, Sternocostal, Aponeurosis of external oblique

To: Intertubercular sulcus of humerus

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6
Q

Origin and insertion of subclavius

A

Origin: 1st rib

To: middle 3rd of clavicle

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7
Q

Origin and insertion of Pec minor

A

Costal cartilage 3-5 to coracoid process

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8
Q

Innervation of pec major

A

Medial and lateral pectoral nerves

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9
Q

Innervation of subclavius

A

Nerve to subclavius

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10
Q

Innervation of pectoralis minor

A

Medial pectoral nerve

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11
Q

Actions of pec major

A

Adduction of shoulder

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12
Q

Actions of subclavius/pec minor

A

Pulls shoulder down

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13
Q

Clavicopectoral fascia covers which structures

A

Pec minor and subclavius

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14
Q

Structures through clavicopectoral fascia

A

2 going in: Cephalic vein, Lymph

2 coming out: lateral pectoral nerves, pectoral branch of thoraco-acromial artery

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15
Q

Medial wall of axilla made off

A

Seratus anterior

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16
Q

Origin and insertion of Seratus anterior

A

8-9 rib to medial scapula

17
Q

Innervation of seratus anterior

A

Long thoracic nerve C5

18
Q

Action of seratus anterior

A

Protraction and rotation of the scapula

19
Q

Posteriro wall of axilla made off

A

Subscapularis

Teres major

Latissimus dorsi

Long head of triceps

20
Q

Origin and insertion of subscapularis

A

subscapular fossa to lesser tubercle of humerus

21
Q

Innervation of subscapularis

A

Upper and lower subscapular nerves

22
Q

Action of subscapular muscle

A

medial rotation of arm at shoulder

23
Q

Origin and insertion of latissimus dorsi

A

Spinous process of thoracic and lumbar vertebra, ilial crest and lower 3-4 ribs

To Intertubercular sulcus of humerus

24
Q

Innervation of latissimus dorsi

A

Thoracodorsal nerve

25
Q

Action of latissimus dorsi

A

Adduction and medial rotation

26
Q

Veins of axilla

A
27
Q

Routes of brachial plexus

A

C5 to T1

28
Q

Trunks of brachial plexus

A

Superior

Middle

Inferior

29
Q

Nerves of the route of brachial plexus

A

Long thoracic nerve

Dorsal scapular

Subclavius nerve

30
Q

Nerves of the trunks of brachial plexus

A

Suprascapular nerve

31
Q

Divisions of brachial plexus

A

Anterior and posterior

32
Q

Cords of brachial plexus

A

Lateral

Posterior

Medial

(in relation to axillary artery)

33
Q

Branches of posterior cord of brachial plexus

A

Upper subscapular

Thoracodorsal

Lower subscapular

Radial

Axillary

34
Q

Branches of medial cord of brachial plexus

A

Medial pectoral nerve

Medial cutaneous nerve of arm

Medial cutaneous nerve of forearm

Ulnar

Median

35
Q

Branches of lateral cord of brachial plexus

A

Lateral pectoral nerve

Musculocutaneous

Median

36
Q

When does subclavian artery become axillary artery

A

Lateral border of 1st rib

37
Q

When does axillary artery become brachial artery

A

inferior border of teres major

38
Q

Terminal branch of musculocutanous

A

Lateral cutenous nerve of forearm (anterolateral forearm sensation)

MRCS anatomy (27 decks)

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