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Anatomy > Pectoral Girdle Muscles > Flashcards

Pectoral Girdle Muscles Flashcards

1
Q

What is the Location of Subclavius

A

Inferior to Medial 1/2 of Clavicle

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2
Q

What is the Origin of Subclavius

A

Rib 1 - Costal Cartilage

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3
Q

What is the Insertion of Subclavius

A

Clavicle - Inferior Middle 3rd

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4
Q

What are the Actions of Subclavius

A

Anchors and Depresses Clavicle, with Clavicle fixed Elevates Rib

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5
Q

What is the Innervation of Subclavius

A

Subclavian Nerve

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6
Q

What is the Location of Serratus Anterior

A

Lateral aspect of Thoracic wall

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7
Q

What are the Origins of Serratus Anterior

A

Ribs 1-8 (9) - External surface

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8
Q

What is the Insertion of Serratus Anterior

A

Medial Border of Scapula - Anterior surface

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9
Q

What is the Action of Serratus Anterior

A

Protracts Scapula and Holds it against the Thoracic wall

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10
Q

What is the Innervation of Serratus Anterior

A

Long Thoracic Nerve

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11
Q

What is the Location of Pectoralis Minor

A

Deep to Pectoralis Major

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12
Q

What is the Origin of Pectoralis Minor

A

Anteromedial surface of Ribs 3-5

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13
Q

What is the Insertion of Pectoralis Minor

A

Coracoid Process

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14
Q

What are the Actions of Pectoralis Minor

A

Protracts and Stabilizes Scapula (I moves towards O with scapula fixed), Draws the Ribcage up (O moves toward I)

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15
Q

What is the Innervation of Pectoralis Minor

A

Medial Pectoral Nerve (some branches of Lateral Pectoral Nerve)

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16
Q

What is the Location of Pectoralis Major

A

Inferior to Clavicles

17
Q

What are the Origins of Pectoralis Major

A

Clavicular Head - Anterior aspect/Medial 1/3 of Clavicle
Sternocostal Head - Anterior surface of Sternum, Ribs 1-6
Abdominal Head - External Oblique Muscle Aponeurosis

18
Q

What is the Insertion of Pectoralis Major

A

Lateral Lip of Bicipital Groove

19
Q

What are the Actions of Pectoralis Major

A

3 Heads - Medial Rotation, Adduction
Clavicular Head - Flexion of G/H Joint
Sternocostal Head - Extends Humerus at G/H Joint from Flexed Position

20
Q

What is the Innervation of Pectoralis Major

A

Lateral Pectoral Nerve

Lower Fibres - Medial Pectoral Nerve

Anatomy (30 decks)

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