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Anatomy AOINAS > Pectoral region and breast > Flashcards

Pectoral region and breast Flashcards

1
Q

Deltoid origin

A

Lateral 1/3 clavicle, spine of scapula and acromion

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2
Q

Deltoid insertion

A

Deltoid tuberosity

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3
Q

Deltoid Action

A

Spinal: Lateral rotation and extension
Acromial: Abduction
Clavicular: Medial rotation and flexion

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4
Q

Deltoid innervation

A

Axillary nerve (CN 5,6)

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5
Q

Deltoid Arterial Supply

A

Thoracoacromial artery, circumflex scapular artery, and anterior and posterior circumflex humeral artery

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6
Q

Pectoralis Major origin

A

Clavicular head: anterior surface of medial
half of clavicle
Sternocostal head: anterior surface of sternum,
superior six costal cartilages, aponeurosis of
external oblique muscle

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7
Q

Pectoralis Major Insertion

A

lateral lip of intertubercular sulcus of the
humerus

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8
Q

Pectoralis Major Innervation

A

lateral and medial pectoral nerves,
clavicular head (C5, C6), sternocostal head (C7, C8,
T1)

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9
Q

Pectoralis Major Action

A

adducts and medially rotates shoulder joint,
draws scapula anteriorly and inferiorly
Clavicular head – flexes shoulder
Sternocostal head – extend from the flexed position

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10
Q

Pectoralis Major Arterial supply

A

Superior and Lateral thoracic artery, internal thoracic artery, and pectoral branches of thoracoacromial artery

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11
Q

Pectoralis Minor Origin

A

3-5th ribs near costal cartilages

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12
Q

Pectoralis Minor Insertion

A

Medial border and the superior surface of the coracoid process

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13
Q

Pectoralis Minor Innervation

A

Median Pectoral Nerve (C8,T1)

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14
Q

Pectoralis Minor Action

A

stabilizes scapula by drawing
inferiorly and anteriorly against
thoracic wall

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15
Q

Pectoralis Minor Arterial Supply

A

Pectoral and deltoid
branches of thoracoacromial
artery, superior and lateral thoracic
arteries

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16
Q

Subclavius Origin

A

Junction of 1st rib and its costal cartilage

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17
Q

Subclavius Insertion

A

Inferior surface middle third of clavicle

18
Q

Subclavian Innervation

A

Subclavian Nerve (C5,C6)

19
Q

Subclavian Action

A

Anchors and depresses clavicle

20
Q

Subclavian Arterial Supply

A

clavicular branch
of thoracoacromial artery and
suprascapular artery

21
Q

Serratus Anterior Origin

A

External Surface of the lateral parts of ribs 1-8

22
Q

Serratus Anterior Insertion

A

Anterior surface of medial border of scapula

23
Q

Serratus Anterior Innervation

A

Long Thoracic Nerve (C5,C6,C7)

24
Q

Serratus Anterior Action

A

Protracts and rotates scapula

25
Q

Serratus Anterior Arterial Supply

A

Superior and lateral thoracic arteries, thoracodorsal artery

26
Q

Coracobrachialis origin

A

Coracoid process of scapula

27
Q

Coracobrachialis Insertion

A

middle third of medial surface of humerus

28
Q

Coracobrachialis Innervation

A

Musculocutaneous (C5,C6,C7)

29
Q

Coracobrachialis Action

A

Flex and adduct the shoulder, resist shoulder dislocation

30
Q

Coracobrachialis Arterial Supply

A

Brachial Artery and anterior circumflex humeral artery

31
Q

Biceps brachii Origin

A

Short head – tip of coracoid
process of scapula
Long head – supraglenoid tubercle of
scapula

32
Q

Biceps brachii Insertion

A

Radial Tuberosity and bicipital aponeurosis

33
Q

Biceps brachii Innervation

A

Musculocutaneous nerve (C5,C6)

34
Q

Biceps brachii action

A

supinates forearm, flexes
supinated elbow, Flexes shoulder
short head – resists shoulder dislocation

35
Q

Biceps brachii Arterial Supply

A

Brachial artery and anterior circumflex humeral artery

36
Q

Platysma Origin

A

Pectoral Fascia

37
Q

Platysma Insertion

A

Inferior border of mandible

38
Q

Platysma Innervation

A

Cervical branches of facial nerve

39
Q

Platysma Action

A

Tenses skin of neck and depress mandible

40
Q

Platysma Arterial Supply

A

Submental and suprascapular artery

Anatomy AOINAS (4 decks)

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