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SHB > Shoulder, Breast, and Pectoral Region > Flashcards

Shoulder, Breast, and Pectoral Region Flashcards

(65 cards)

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1
Q

Pectoral Fascia

A

Covers the pectoralis major

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2
Q

Axillary fascia

A

Continuation of pectoral fascia laterally

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3
Q

Clavipectoral fascia

A

Deep to pectoralis major; encloses subclavius and pectoralis minor

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4
Q

Pectoralis major

A

Large, fan shaped muscle covering most of the anterior thoracic wall

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5
Q

Origin of Pectoralis major

A

Sternal half of clavicle, sternum to 7th rib, cartilages of true ribs, aponeurosis of external oblique muscle

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6
Q

Insertion of Pectoralis major

A

Lateral lip of intertubercular sulcus of humerus

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7
Q

Action of Pectoralis major

A

Flexes and adducts arm, rotates arm medially

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8
Q

Innervation of Pectoralis major

A

Medial and lateral pectoral nerves

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9
Q

Supply of Pectoralis major

A

Pectoral branch of thoraco‐acromial artery, perforating branches of internal thoracic artery

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10
Q

Origin of Pectoralis minor

A

Outer surface of upper margin of ribs 3–5

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11
Q

Insertion of Pectoralis minor

A

Coracoid process of scapula

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12
Q

Action of Pectoralis minor

A

Lowers lateral angle of scapula and protracts scapula

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13
Q

Innervation of Pectoralis minor

A

Medial pectoral nerve

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14
Q

Supply of Pectoralis minor

A

Pectoral branch of thoraco‐acromial and intercostal lateral thoracic arteries

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15
Q

Origin of Deltoid

A

Lateral third of anterior clavicle, lateral acromion, inferior edge of spine of scapula

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16
Q

Insertion of Deltoid

A

Deltoid tuberosity of humerus

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17
Q

Action of Deltoid

A

Rotates arm, abducts humerus from 15 to 90 degrees

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18
Q

Innervation of Deltoid

A

Axillary nerve

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19
Q

Supply of Deltoid

A

Posterior circumflex humeral artery, deltoid branch of thoraco‐acromial artery

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20
Q

Rotator Cuff Muscles

A 
S i t S
Supraspinatus
Infraspinatus
Teres minor
Subscapularis
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21
Q

Origin of the Supraspinatus

A

Supraspinous fossa of scapula and deep fascia

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22
Q

Insertion of the Supraspinatus

A

Greater tubercle of the humerus

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23
Q

Action of the Supraspinatus

A

Initiates abduction of the arm with the first 15 degrees

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24
Q

Innervation of the Supraspinatus

A

Suprascapular nerve

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25
Supply of the Supraspinatus
Suprascapular artery
26
Origin of the Infraspinatus
Infraspinous fossa of scapula and deep fascia
27
Insertion of the Infraspinatus
Greater tubercle of the humerus
28
Action of the Infraspinatus
Lateral rotation of arm (with teres minor)
29
Supply of the Infraspinatus
Suprascapular artery
30
Innervation of the Infraspinatus
Suprascapular nerve
31
Origin of Teres major
Posterior surface of inferior angle of scapula
32
Insertion of Teres major
Medial lip of intertubercular sulcus of humerus
33
Action of Teres major
Adducts and medially rotates arm
34
Innervation of Teres major
Lower subscapular nerve
35
Supply of Teres major
Circumflex scapular artery
36
Origin of Subscapularis
Subscapular fossa
37
Insertion of Subscapularis
Lesser tubercle of humerus
38
Action of Subscapularis
Medially rotates arm at shoulder and adducts it, helps hold humeral head in glenoid cavity
39
Innervation of Subscapularis
Upper and lower subscapular nerves
40
Supply of Subscapularis
Subscapular artery, lateral thoracic artery
41
Origin of Teres minor
Upper 2/3 of posterior surface of lateral border of scapula
42
Insertion of Teres minor
Inferior facet of greater tubercle of humerus
43
Action of Teres minor
Laterally rotates arm
44
Innervation of Teres minor
Axillary nerve
45
Supply of Teres minor
Circumflex scapular artery
46
Subclavian artery branches
VITamin C and sometimes D
47
Axillary artery branches
Screw The Lawyer, Save A Patient
48
First part of the axillary artery
Medial to the pectoralis minor; Superior thoracic artery
49
Second part of the axillary artery
Under the pectoralis minor; Thoracoacromial trunk and Lateral thoracic arteries
50
Third part of the axillary artery
Lateral to the pectoralis minor; Subscapular, Anterior and Posterior circumflex humeral arteries
51
The dorsal scapular nerve innervates...
The levator scapulae and the rhomboid major and minor
52
The suprascapular nerve innervates...
The supraspinatus and the infraspinatus muscle
53
The long thoracic nerve innervates...
The serratus anterior
54
The axillary nerve innervates...
The deltoid and the teres minor
55
The upper subscapular nerve innervates...
The subscapularis
56
The lower subscapular nerve innervates...
The subscapularis and the teres major
57
The thoracodorsal nerve innervates...
The latissimus dorsi
58
The medial pectoral nerve innervates...
The pectoralis major and the pectoralis minor
59
The lateral pectoral nerve innervates...
The pectoralis major
60
The breast extends...
Vertically, from the 2nd to the 6th rib
61
The breast contains...
1 lactiferous duct per lobe and 15-20 tubuloalveolar glands (with each forming a lobe)
62
Suspensory ligaments (of Cooper)
Attach the lobes to the skin and divide the glandular tissue into lobes
63
Arterial supply to the breast
Internal thoracic artery (internal mammary, subclavian), the pectoral branch of thoracoacromial trunk (axillary) and the lateral thoracic artery (axillary)
64
Lymphatics of the breast
Many nodes drain the breast, but the majority of the nodes drain towards the axilla. Remember CLASP (central, lateral, apical, subscapular, and pectoral nodes)
65
Where does the highest frequency of breast cancer occur?
In the superior lateral quadrant of the breast, which drains to the axillary nodes.

SHB (11 decks)

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