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Anatomy > Lab 4 Part 1: Origins, Insertions, and Actions > Flashcards

Lab 4 Part 1: Origins, Insertions, and Actions Flashcards

1
Q

what is the origin of the deltoid?

A

-clavicle
-scapula

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2
Q

what is the insertion of the deltoid?

A

-humerus

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3
Q

what is the action of the deltoid?

A

-abducts arm @ shoulder joint
-medially + laterally rotates arm

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4
Q

what is the origin of the infraspinatus?

A

-scapula

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5
Q

what is the insertion of the infraspinatus?

A

-humerus

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6
Q

what is the action of the infraspinatus?

A

-laterally rotates arm

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7
Q

what is the origin of the latissimus dorsi?

A

-spines T7-L5
-ribs 9-12
-sacrum

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8
Q

what is the insertion of the latissimus dorsi?

A

-humerus

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9
Q

what is the action of the latissimus dorsi?

A

-extends and adducts the arm
-medially rotates arm @ shoulder joint

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10
Q

what is the origin of the pectoralis major?

A

-clavicle
-sternum
-ribs 2-6 (1-7 sometimes)

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11
Q

what is the insertion of the pectoralis major?

A

-humerus

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12
Q

what is the action of the pectoralis major?

A

-extends, adducts, and flexes the arm
-medially rotates arm @ shoulder joint

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13
Q

what is the origin of the serratus anterior?

A

-ribs 1-8 (9 sometimes)

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14
Q

what is the insertion of the serratus anterior?

A

-scapula

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15
Q

what is the action of the serratus anterior?

A

-abducts and rotates scapula upward (punching +pushing)

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16
Q

what is the origin of the subscapularis?

A

-scapula

17
Q

what is the insertion of the subscapularis?

A

-humerus

18
Q

what is the action of the subscapularis?

A

-medially rotates arm @ shoulder joint

19
Q

what is the origin of the supraspinatus?

A

-scapula

20
Q

what is the insertion of the supraspinatus?

A

-humerus

21
Q

what is the action of the supraspinatus?

A

-abducts arm @ shoulder jointw

22
Q

what is the origin of the teres major?

A

-scapula

23
Q

what is the insertion of the teres major?

A

-humerus

24
Q

what is the action of the teres major?

A

-extends and adducts arm
-medially rotates arm @ shoulder joint

25
Q

what is the origin of the teres minor?

A

-scapula

26
Q

what is the insertion of the teres minor?

A

-humerus

27
Q

what is the action of the teres minor?

A

-extends arm
-laterally rotates arm @ shoulder joint

28
Q

what is the origin of the trapezius?

A

-occipital bone
-spines C7-T12h

29
Q

what is the insertion of the trapezius?

A

-clavicle
-scapula

30
Q

what is the action of the trapezius?

A

-stabilizes scapula
-rotates the scapula upward
-adducts the scapula

Anatomy (29 decks)

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