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Origin, Insertion, and Function of Human Arm Muscles Flashcards

(8 cards)

1
Q

Pectoralis major

A

Origin: Clavicle, sternum

Insertion: humerus

Function: arm flexion

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2
Q

Pectoralis minor

A

Origin: Anterior surface of ribs 3–5

Insertion: Coracoid process of scapula

Function: moves rib cage superiorly

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3
Q

Deltoid

A

Origin: spine of scapula

Insertion: Deltoid tuberosity of
humerus

Function: arm abduction

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4
Q

Latissimus dorsi

A

Origin: iliac crest

Insertion: Floor of
intertubercular sulcus of humerus

Function: arm extension

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5
Q

Infraspinatus

A

Origin: Infraspinous fossa of
scapula

Insertion: Greater tubercle of
humerus

Function: Lateral rotation of arm

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6
Q

Teres minor

A

Origin: Lateral margin of
posterior scapula

Insertion: Greater tubercle of
humerus

Function: Lateral rotation of arm

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7
Q

Teres major

A

Origin: Posterior surface at
inferior angle of scapula

Insertion: Intertubercular sulcus of humerus

Function: adducts arm

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8
Q

Supraspinatus

A

Origin: Supraspinous fossa of
scapula

Insertion: Greater tubercle of
humerus

Function: adduction of the arm

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