muscles of shoulder joint Flashcards by Chelsea Schuaman | Brainscape

Q

origin and insertion of teres major

A

O: lower 1/3 of lat border of scapula

I: inf 1/2 of medial lip of intertubercular groove

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Q

flexion

horizontal flexion

medial rotation

A

actions of pec major clavicular portion and deltoid anterior

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Q

extension

horizontal flexsion

medial rotation

adduction

A

actions of pec major sternal portions

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Q

actions of deltoid posterior fibers

A

extension

horixontal extension

lateral rotation

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Q

actions of infraspinatus

A

lat rotation

stabilization prevents up/ant motion of shoulder

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Q

origin and insertion of coracobrachialis

A

O: coracoid process

I: mid med shaft of humerus

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Q

actions of latissimus dorsi

A

extension

horizontal extenstion

adduction

medial rotation

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Q

actions of deltoid middle fibers

A

abduction

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Q

Actions of subscapularis

A

med rotation

stabilization prevents post motion of shoulder

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Q

abduction

A

actions of deltoid middle fibers

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Q

actions of pec major clavicular portion

A

flexion

horizontal flexion

medial rotation

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Q

origin and insertion of deltoid posterior fibers

A

O: scapular spine

I: deltoid tuberosity

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Q

actions of coracobrachialis

A

felxion

horizontalflexion

adduction

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Q

lat roation

stabilization prevents up/ant motion of shoulder

A

action of teres minor and infraspinatus

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Q

med rotation

stabilization prevents post motion of shoulder

A

Actions of subscapularis

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Q

flexion
horizontal flexion
abduction

A

actions of Bicep brachii long head at shoulder

Q

actions of Bicep brachii long head at shoulder

A

flexion
horizontal flexion
abduction

Q

abduction

stabilization prevents down motion of shoulder

A

Actions of supraspinatus

Q

origin and insertion of deltoid anterior fibers

A

O: ant/lat 1/3 of clavicle

I: deltoid tuberosity

Q

origin and insertion of deltoid middle fibers

A

O: acromion process

I: deltoid tuberosity

Q

flexion
horizontal flexion
adduction

A

actions of bicep brachii short head at shoulder and coracobrachialis

Q

origins and insertion of latissimus dorsi

A

O: -post illiac crest

spinous process of T6-T12, L1-L5
post surface of sacrum
lower 3 ribs

I: medial side of intertubercular grooce

Q

extension
horizontal extension
adduction

A

actions of tricep brachii long head at shoulder

Q

actions of tricep brachii long head at shoulder

A

extension
horizontal extension
adduction

Q

actions of deltoid anterior fibers

A

flexion

horizontal flexion

medial roation

Q

origin and insertion of pec major clavicular protion

A

O: ant/med 1/2 of clavicle

I: lat lip of intertubercular groove

Q

actions of pec major sternal portions

A

extension

horizontal flexsion

medial rotation

adduction

Q

action of teres minor

A

lat roation

stabilization prevents up/ant motion of shoulder

Q

Actions of supraspinatus

A

abduction

stabilization prevents down motion of shoulder

Q

actions of bicep brachii short head at shoulder

A

flexion
horizontal flexion
adduction

Q

actions of teres major

A

extension

horizontalextension

adduction

med rotation

Q

origin and insertion of pec major sternal portion

A

O: ant surface of sternum

I: lat lip of intertubercular groove

Q

extension

horixontal extension

lateral rotation

A

actions of deltoid posterior fibers

Q

extension

horizontal extenstion

adduction

medial rotation

A

actions of latissimus dorsi and teres major