Pectoral Region Muscles: Origin, Insertion, Innervation and Action

Lakukan tugas rumah & ujian kamu dengan baik sekarang menggunakan Quizwiz!

Winged scapula

Scapular serratus not functioning, possibly Long Thoracic nerve damage

Lateral Pectoral nerve innervates

Pectoralis Major Innervation

Axilla Space borders

Anterior wall: pec major and minor Posterior wall: subscapularis, latissimus dorsi and teres major Medial wall: serratus anterior Lateral wall: intertubercular groove of humerus

Axilla Space contents

Axillary artery and vein Cords of the brachial plexus SH/LH of biceps and coracobrachialis Long thoracic nerve

Subclavius Origin and Insertion

Origin: Rib 1 Insertion: Inferior aspect of clavicle (under the "s")

Serratus Anterior Origin and Insertion

Origin: Ribs 1-8 Insertion: Medial border of the scapula

Pectoralis Minor Origin and Insertion

Origin: Ribs 3-5 Insertion: Coracoid Process of Scapula

Pectoralis Major origin and Insertion

Origin: Clavicular Head Sternocostal Head Abdominal Head Insertion: Lateral aspect of Intertubercular groove of Humerus

Flexion and Extension Horizontal Adduction and Internal Rotation

Pectoralis Major Action

Medial Pectoral nerve innervates both

Pectoralis Major and Pectoralis Minor Innervation

Assists with scap protraction and Downward rotation of Scapula

Pectoralis Minor Action

Pectoralis Minor when tight

Pulls on scapula (coracoid process) causing an anterior tilt - can be rectified by stretching and manual therapy to loosed muscle and train retraction of shoulders

Upward rotation of scapula (in synergy with trap) and Protraction

Serratus Anterior Action

Long thoracic nerve innervates

Serratus Anterior Innervation

Clavicular stability

Subclavius Action

Nerve to the subclavius innervates

Subclavius Innervation


Set pelajaran terkait

AP Psych Unit 4 Test Bank Question (Set 1)

View Set

3.1 How the Physical World Relates to the Psychological World

View Set

Perioperative Nursing Management

View Set

Endocrine Disorders Concept: Fluid and Electrolytes

View Set

AP Euro - Test 1 Abbreviated Version

View Set

PSY1010 Chap. 6 REVIEW QUESTIONS

View Set

Chapter 10- Interest Groups- (American Federal Government)

View Set

Absolutism/Constitutionalism Test Q?'s

View Set