Actions Flashcards

1
Q

What is the action of Pectoralis minor

A

Depresses scapula
Causes inferior angle to move posteromedially
Rotate glenoid inferiorly

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2
Q

What is the action of coracobrachialis

A

Strong extensor

Flexion, aDduct, medially rotate

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3
Q

What is the action of Teres major

A

Medially rotates
Extends
ADduct

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4
Q

What is the action of deltoid

A

Anterior: flexion, medial rotation, aDduct
Middle: aBduction
Posterior: extension, lateral rotation, aDduct

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5
Q

What is the action of subclavius

A

Secure clavicle in sternoclavicular joint

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6
Q

What is the action of omohyoid

A

Depress the omohyoid bone

Depress hyoid and larynx for phonation and swallowing

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7
Q

What is the action of biceps brachii

A

Elbow joint: elbow flexion and supination
Shoulder joint: flexion, stabilization of the humerus during deltoid contractions, abduction. Medial rotation of the humerus

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8
Q

What is the action of brachialis

A

Flexion at the elbow joint

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9
Q

What is the action triceps brachii

A

Elbow joint: extension

Shoulder joint: extension and aDduction

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10
Q

What is the action of serratus anterior

A

Protraction of scapula

Lateral rotation

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11
Q

What is the action of supraspinatus

A

Initiates abduction, first 15 degrees of movement

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12
Q

What is the action of infraspinatus

A

Lateral rotation

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13
Q

What is the action of Teres minor

A

Lateral rotation

Weak aDduction

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14
Q

What is the action of subscapularis

A

Medial rotation

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15
Q

What is the action of Pectoralis major

A

Major flexor
ADduction
Medial rotation

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16
Q

What is the action of extensor carpi radialis longus

A

Elbow: weak flexion
Wrist: extension, aBduction

17
Q

What is the action of extensor carpi radialis brevis

A

Elbow: weak flexion
Wrist: extension, aBduction

18
Q

What is the action of extensor digitorum

A

Wrist: extension

Extension and aBduction of digits

19
Q

What is the action of extensor digiti minimi

A

Wrist: extension and ulnar aBduction of the hand

Extension and aBduction of the 5th digit

20
Q

What is the action of extensor carpi ulnaris

A

Wrist: extension and aDduction of hand (ulnar deviation)

21
Q

What is the action of supinator

A

Supination

22
Q

What is the action of abductor pollicis longus

A

Radiocarpal joint: abduction of hand

Carpometacarpal joint of thumb: abduction of thumb

23
Q

What is the action of extensor pollicis brevis

A

Radiocarpal joint: abduction, radial deviation

Carpometacarpal joint of thumb: extension

24
Q

What is the action of extensor pollicis longus

A

Wrist/Radiocarpal joint: extension, abduction (radial deviation)
Carpometacarpal joint of the thumb: aDduction, extension

25
Q

What is the action of extensor indicis

A

Wrist: extension

2nd digit: extension