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Muscle Attachments Shoulder and Arm

On This Page: Bones and Bony Landmarks | Muscles

Bones and Bony Landmarks

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Muscles

Brachialis

Origin Distal Half Of Anterior Surface Of Humerus
Insertion Tuberosity And Coronoid Process Of Ulna
Actions Flex The Elbow

Brachioradialis

Origin Lateral Supracondylar Ridge Of Humerus
Insertion Styloid Process Of Radius
Actions Flex The Elbow, Assist In Pronation And Supination Of The Forearm When Movements Are Resisted

Extensor Carpi Radialis Longus And Brevis

Origin Lateral Supracondylar Ridge Of Humerus
Insertion Longus: Base Of Second Metacarpal

Brevis: Base Of Third Metacarpal

Actions Extend, Abduct The Wrist, Assist In Elbow Flexion

Extensor Digitorum

Origin Common Extensor Tendon From Lateral Epicondyle Of Humerus
Insertion Middle And Distal Phalanges Of Each Four Fingers
Actions Extend Four Fingers, Assist In Extension Of Wrist

Extensor Carpi Ulnaris

Origin Common Extensor Tendon From Lateral Epicondyle Of Humerus
Insertion Base Of 5th Metacarpal
Actions Extend, Adduct The Wrist

Flexor Carpi Radialis

Origin Common Flexor Tendon From Medial Epicondyle
Insertion Base Of 2nd And 3rd Metacarpal
Actions Flex, Abduct Wrist, Flex Elbow

Palmaris Longus

Origin Common Flexor Tendon From Medial Epicondyle
Insertion Flexor Retinaculum And Palmar Aponeurosis
Actions Tenses Palmar Fascia, Flex Wrist, Flex Elbow

Flexor Carpi Ulnaris

Origin Common Flexor Tendon From Medial Epicondyle
Insertion Pisiform
Actions Flex, Adduct Wrist, May Flex Elbow

Flexor Digitorum Superficalis

Origin Common Flexor Tendon From Medial Epicondyle Of Humerus, Coronoid Process of Ulna
Insertion By Four Tendons Into Sides Of Middle Phalanges Of 2nd Thru 5th Digits
Actions Flex Proximal Interphalangeal Joints Of 2nd Thru 5th Digits

Flex Metacarpophalangeal Joints

Flex Wrist

Flexor Digitorum Profundus

Origin Anterior And Medial Surfaces Of Proximal Three-Quarters Of Ulna
Insertion By Four Tendons Into Bases Of Distal Phalanges, Anterior Surface
Actions Flex Distal Interphalangeal Joints Of Four Fingers

Flex Proximal Interphangeal and Metacarpophalangeal Joints

May Flex Wrist

Opponens Pollicis

Origin Flexor Retinaculum And Tubercle Of The Trapezium
Insertion Entire Length Of First Metacarpal Bone, Radial Side
Actions Oppose The Thumb

Adductor Pollicis

Origin Capitate, 2nd And 3rd Metacarpals
Insertion Base Of Proximal Phalange Of Thumb
Actions Adduct, Flex The Thumb

Extensor Pollicis Longus And Brevis

Origin Posterior Surface Of Radius And Ulna, Deep To Extensors
Insertion Longus: Distal Phalange Of Thumb

Brevis: Proximal Phalange Of Thumb

Actions Extend The Thumb

Flexor Pollicis Longus

Origin Anterior Surface Of Radius, Deep To Flexors
Insertion Distal Phalange Of Thumb
Actions Flex The Thumb

Abductor Pollicis Longus

Origin Posterior Surface Of Radius And Ulna, Deep To Extensors
Insertion Base Of 1st Metacarpal
Actions Abduct, Extend The Thumb

Pronator Teres

Origin Medial Epicondyle Of Humerus,  Common Flexor Tendon And Coronoid Process of Ulna
Insertion Middle Of Lateral Surface Of Radius
Actions Pronate The Forearm, Assists To Flex The Elbow

Supinator

Origin Lateral Epicondyle Of Humerus, Radial Collateral Ligament And Annular Ligament
Insertion Lateral Surface Of Proximal Shaft Of Radius
Actions Supinate The Forearm

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