Upper Extremity Muscles Flashcards by Hailey Clausen | Brainscape

Q

Trapezius origin

A

occipital bone, spinous process

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Q

Trapezius insertion

A

scapular spine, acromion, distal clavicle

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Q

Trapezius action

A

elevate, depress, adduct scapula

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Q

Rhomboids origin

A

spinous process

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Q

Rhomboids insertion

A

medial border of scapula

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Q

Levator scapulae origin

A

transverse process

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Q

Levator scapulae insertion

A

superior angle of scapula

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Q

Levator scapulae action

A

elevate scapula

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Q

Pectoralis minor origin

A

ribs

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Q

Pectoralis minor insertion

A

coracoid process of scapula

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Q

Pectoralis minor action

A

depress scapula

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Q

Serratus anterior origin

A

ribs

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Q

Serratus anterior insertion

A

medial border of scapula

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Q

Serratus anterior action

A

abduct scapula

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Q

Pectoralis major origin

A

sternum and clavicle

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Q

Pectoralis major instertion

A

greater tubercle of humerus

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Q

Pectoralis major action

A

flex and adduct arm

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Q

Coracobrachialis origin

A

coracoid process of scapula

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Q

Coracobrachialis insertion

A

proximal humerus

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Q

Coracobrachialis action

A

flex and adduct arm

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Q

Lastissimus dorsi origin

A

spinous process, iliac crest

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Q

Lastissimus dorsi insertion

A

lesser tubercle of humerus

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Q

Lastissimus dorsi action

A

extend and adduct arm

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Q

Teres major origin

A

inferior angle of scapula

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Q

Teres major insertion

A

lesser tubercle of humerus

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Q

Teres major action

A

extend and adduct arm

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Q

Deltoid origin

A

scapular spine, acromion, clavicle

Q

Deltoid insertion

A

deltoid tuberosity of humerus

Q

Deltoid action

A

abduct, flex, and extend arm

Q

4 rotator cuff muscles

A

supraspinatus, infraspinatus, teres minor, subscapularis

Q

Supraspinatus origin

A

supraspinatus fossa of scapula

Q

Infraspinatus origin

A

infraspinatus fossa of scapula

Q

Teres minor origin

A

lateral border of scapula

Q

Rotator cuff muscles insertion

A

greater tubercle of humerus

Q

Supraspinatus action

A

abduct arm

Q

Infraspinatus and teres minor action

A

laterally rotate arm

Q

Subscapularis origin

A

subscapular fossa of scapula

Q

Subscapularis insertion

A

lesser tubercle of humerus

Q

Subscapularis action

A

medially rotate arm

Q

Biceps brachii origin

A

long head: above glenoid fossa short head: coracoid process of scapula

Q

Biceps brachii insertion

A

radial tuberosity of radius (spans 2 joints!)

Q

Biceps brachii action

A

flex and supinate forearm

Q

Brachialis origin

A

distal humerus

Q

Brachialis insertion

A

proximal ulna

Q

Brachialis action

A

flex forearm

Q

Brachioradialis origin

A

distal lateral humerus

Q

Brachioradialis insertion

A

styloid process of radius

Q

Brachioradialis action

A

flex forearm

Q

Triceps brachii lateral head origin

A

lateral surface of humerus

Q

Triceps brachii long head origin

A

below glenoid fossa

Q

Triceps brachii medial head origin

A

posterior surface of humerus

Q

Triceps brachii insertion

A

olecranon process of ulna

Q

Triceps brachii action

A

extend forearm

Q

Pronator teres and pronator quadratus origin

A

ulna

Q

Pronator teres and pronator quadratus insertion

A

radius

Q

Pronator teres and pronator quadratus action

A

pronate forearm

Q

Supinator origin

A

proximal ulna

Q

Supinator insertion

A

proximal radius

Q

Supinator action

A

supinate forearm

Q

Forearm flexors origin

A

medial epicondyles of humerus, radius, ulna

Q

Forearm flexors insertion

A

carpals, metacarpals, phalanges

Q

Forearm flexors action

A

flex wrist, fingers, thumb

Q

Forearm extensors origin

A

lateral epicondyles of humerus, radius, ulna

Q

Forearm extensors insertion

A

carpals, metacarpals, phalanges

Q

Forearm extensors action

A

extend wrist, fingers, thumb, abduct thumb

Q

Intrinsic muscle of the thumb

A

thenar

Q

Intrinsic muscle of the pinky

A

hypothenar