Arm Muscles Origin & Insertions Flashcards by Lola Mendoza

Q

Deltoid origin

A

Sound, acromion,lateral clavicle

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Q

Deltoid insertion

A

Deltoid tuberosity

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Q

Deltoid action

A

Flexion, abdication, extension of the shoulder,

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Q

Deltoid nerve innervation

A

Axillary nerve

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Q

Pectoralis major origin

A

Lateral sternum, costal cartilage 1-7, medial clavicle

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Q

Pectoralis major insertions

A

Intertubercular groove

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Q

Pectoralis major action

A

Adduction and internal rotation of the shoulder

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Q

Pectoralis major nerve innervation

A

Medial and lateral pectoral nerves

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Q

Pectoralis minor origin

A

Coracoid process

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Q

Pectoralis minor insertion

A

Ribs 3-5

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Q

Pectoralis minor action

A

Depresses scapula, assists with breathing

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Q

Pectoralis minor innervation

A

Medial pectoral

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Q

Subscapularis origin

A

Subscapular fossa

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Q

Subscapularis insertion

A

Lesser tubercle

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Q

Subscapularis action

A

Internal rotation

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Q

Subscapularis nerve innervation

A

Upper and lower scapular nerve

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Q

Supraspinatus origin

A

Supraspinous fossa

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Q

Supraspinatus insertion

A

Upper part of greater tubercle

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Q

Supraspinatus action

A

Abduction

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Q

Supraspinatus nerve innervation

A

Suprascapular nerve

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Q

Infraspinatus origin

A

Infraspinous fossa

Q

Infraspinatus insertion

A

Middle part of Greater tubercle

Q

Infraspintus action

A

External rotation

Q

Infraspinutus nerve innervation

A

Suprascapular nerve

Q

Teres minor origin

A

Lateral border of the scapula

Q

Teres minor insertion

A

Lower part of great tubercle

Q

Teres minor action

A

External rotation

Q

Teres minor nerve innervation

A

axillary nerve

Q

Biceps brachii origin Long head

A

Supraglenoid tubercle of the scapula

Q

Biceps brachii origin Short head

A

Coracoid process

Q

Biceps brachii insertion

A

Radical tuberosity

Q

Biceps brachii action

A

Flexion and supination of elbow

Q

Biceps brachii nerve innervation

A

Musculocutaneous nerve

Q

Coracobrachialis origin

A

Coracoid process

Q

Coracobrachialis insertion

A

Medial mid humerus

Q

Coracobrachialis action

A

Flexion, adduction, internal rotation

Q

Coracobrachialis nerve innervation

A

Musculocutaneous nerve

Q

Brachialis origin

A

Lower half of anterior humerus

Q

Brachialis insertion

A

Ulnar tuberosity

Q

Brachialis action

A

Flexion of elbow

Q

Brachialis nerve innervation

A

Musculocutaneous and radial nerve

Q

Triceps brachii Long head origin

A

Infraglenoid tubercle of scapula

Q

Triceps brachii lateral head origin

A

Upper half ofposterion humerus, posterior to radial groove

Q

Triceps brachii medial head origin

A

Posterior medial humerus, inferior to radial groove

Q

Triceps brachii insertion

A

Olecranons process of ulna

Q

Triceps brachii action

A

Extension of elbow

Q

Triceps brachii nerve innervation

A

Radial nerve

Q

Brachioradialis origin

A

Lateral supracondylar ridge of humerus

Q

Brachloradialis insertion

A

Radial stylold process

Q

Brachioradialis action

A

Flexion of elbow

Q

Brachioradlalis nerve innervation

A

Radial nerve