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Upper Anatomical Origins, Insertions, Innervations, Action, Arterial Supply > Pectoral Region > Flashcards

Pectoral Region Flashcards

1
Q

Pectoralis Major Origin

A

Medial 1/2 of clavicle

Anterior surface of sternum

Superior 6 costal cartilage

Aponeurosis of external oblique

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2
Q

Pectoralis Major Insertion

A

Lateral lip of intertubercular sulcus

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3
Q

Pectoralis Major Action

A

Adducts and mediallly rotates shoulder joint

Draws scapula anteriorly and inferiorly

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4
Q

Pectoralis Major Innervation

A

Lateral and medial pectoral nerves

Clavicular head- C5, C6

Sternocostal head- C7, C8, T1

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5
Q

Pectoralis minor Origin

A

3rd-5th Ribs near costal cartilage

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6
Q

Pectoralis Minor Insertion

A

Medial border and superior surface of coracoid process

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7
Q

Pectoralis Minor Action

A

Stabilizes scapula, inferior, anterior pull towards thoracic wall

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8
Q

Pectoralis Minor Blood Supply

A

Pectoral and Deltoid Branches of thoracoacromial artery

Superior and lateral thoracic artery

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9
Q

Pectoralis Minor Innervation

A

Medial pectoral Nerve C8-T1

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10
Q

Subclavius Origin

A

Junction of the 1st rib (costal cartilage)

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11
Q

Subclavius Insertion

A

Inferior surface of the middle 1/3 of the clavicle

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12
Q

Subclavius Action

A

Depresses clavicle

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13
Q

Subclavian Innervation

A

Subclavian nerve

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14
Q

Subclavius Blood Supply

A

Suprascapular artery

Thoracoacromial artery (Clavicular branch)

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15
Q

Serratus Anterior Origin

A

External Surface of lateral parts of ribs 1-8

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16
Q

Serratus anterior insertion

A

Anterior surface of medial borders of scapula

17
Q

Serratus anterior action

A

Protraction of scapular, holds it to thoracic wall

Rotates scapula

18
Q

Serratus Anterior Innervation

A

Long Thoracic Nerve

19
Q

Serratus Anterior Blood Supply

A

Superior and lateral thoracic arteries

Thoracodorsal arteries

20
Q

Pectoralis Major Blood Supply

A

Pectoral branch of the Thoraccoacromial artery

Upper Anatomical Origins, Insertions, Innervations, Action, Arterial Supply (7 decks)

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