LECTURE 3 muscles of the thorax Flashcards by Taylor Smith

Q

origin of pectoralis major

A

sternum, clavicle, ribs 2-6

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Q

insertion of pectoralis major

A

intertubercular groove of humerus

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Q

action of pectoralis major

A

adduct, flex, medially rotate arm

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Q

innervation of pectoralis major

A

M & L pectorals

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Q

origin of pectoralis minor

A

ribs 3-5

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Q

insertion of pectoralis minor

A

coracoid process of scapula

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Q

action of pectoralis minor

A

depress, rotate scapula

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Q

innervation of pectoralis minor

A

M & L pectorals

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Q

origin of serratus ventralis

A

ribs 1-9

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Q

insertion of serratus ventralis

A

scapula

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Q

action of serratus ventralis

A

protract, rotate scapula

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Q

innervation of serratus ventralis

A

long thoracic

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Q

origin of levator scapula

A

c1-c4

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Q

insertion of levator scapula

A

medial border of scapula

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Q

action of levator scapula

A

elevate scapula

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Q

innervation of levator scapula

A

D scapular

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Q

origin of rhomboideus minor

A

c7-t1

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Q

insertion of rhomboideus minor

A

medial border of scapula

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Q

action of rhomboideus minor

A

adduct, elevate, rotate scapula

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Q

innervation of rhomboideus minor

A

D scapular

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Q

origin of rhomboideus major

A

t2-t5

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Q

insertion of rhomboideus major

A

medial border of scapula

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Q

action of rhomboideus major

A

adduct, elevate, rotate scapula

Q

innervation of rhomboideus major

A

d scapular

Q

origin of teres major

A

inferior angle of scapula

Q

insertion of teres major

A

intertubercular groove of humerus

Q

action of teres major

A

medially rotate, extend arm

Q

innervation of teres major

A

subscapular

Q

origin of trapezius

A

ligamentum nuchae, c7-t12

Q

insertion of trapezius

A

clavicle, spine of scapula

Q

action of trapezius

A

elevate, adduct, rotate, depress scapula

Q

innervation of trapezius

A

accessory

Q

origin of latissimus dorsi

A

iliac crest, t7-t12, lumbar fascia

Q

insertion of latissimus dorsi

A

intertubercular groove of humerus

Q

action of latissimus dorsi

A

extend, medially rotate, adduct arm

Q

innervation of latissimus dorsi

A

thoracodorsal

Q

origin of deltoids

A

lateral clavicle, spine and acromion of scapula

Q

insertion of deltoids

A

deltoid tuberosity of humerus

Q

action of deltoids

A

abduct, flex, extend, rotate arm

Q

innervation of deltoids

A

axillary

Q

origin of supraspinatus

A

supraspinous fossa of scapula

Q

insertion of supraspinatus

A

greater tubercle of humerus

Q

action of supraspinatus

A

abduction of arm

Q

innervation of supraspinatus

A

suprascapular

Q

origin of infraspinatus

A

infraspinous fossa of scapula

Q

insertion of infraspinatus

A

greater tubercle of humerus

Q

action of infraspinatus

A

lateral rotation of arm

Q

innervation of infraspinatus

A

suprascapular

Q

origin of teres minor

A

lateral border of scapula

Q

insertion of teres minor

A

greater tubercle of humerus

Q

action of teres minor

A

lateral rotation of arm

Q

innervation of teres minor

A

axillary

Q

origin of subscapularis

A

subscapular fossa of scapula

Q

insertion of subscapularis

A

lesser tubercle of humerus

Q

action of subscapularis

A

medial rotation of arm

Q

innervation of subscapularis

A

subscapular