Muscle Actions- Lecture Unit 2 Exam Flashcards

1
Q

Trapezius- A

A

Stabilizes the Scapula
Upper Portion: Elevates scapula
Middle & Lower Portion: Adducts the scapula

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2
Q

Rhomboid Major- A

A

Elevate & Adducts Scapula

Helps Stabilize the Scapula

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3
Q

Rhomboid Minor- A

A

Elevate & Adducts Scapula

Helps Stabilize Scapula

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4
Q

Levator Scapula- A

A

Elevate Scapula
Adducts Scapula
Stabilize Scapula

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5
Q

Latissimus Dorsi- A

A

Extends, Adduct & Medially Rotate the Humerus

Involved in forced Expiration

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6
Q

Serratus Anterior- A

A

Abduction/Protraction of Scapula
Stabilizes Scapula
Involved w/ Forced Inspiration (when humerus is abducted)

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7
Q

Deltoid- A

A

Anterior Portion: Flexes & Medially Rotates Arm
Middle Portion: Abducts Arm
Posterior Portion: Extends & Laterally Rotates Arm

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8
Q

Supraspinatus- A

A

Initiates Abduction of Arm
Helps Laterally Rotate Humerus
Helps Stabilize Shoulder Joint

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9
Q

Infraspinatus- A

A

Laterally rotates the Humerus

Stabilizes Shoulder Joint

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10
Q

Subscapularis- A

A

Medially Rotates Humerus

Stabilizes Shoulder Joint

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11
Q

Teres Major- A

A

Adducts Humerus
Stabilizes Shoulder Joint
Medially Rotates Humerus

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12
Q

Teres Minor- A

A

Laterally Rotates Humerus

Stabilizes Shoulder Joint

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13
Q

Biceps Brachii- A

A

Flexions of Forearm

Supinates the Radius

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14
Q

Coracobrachialis- A

A

Flexion & Weak adduction of Arm (Shoulder Joint)

Stabilizes Shoulder Joint

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15
Q

Brachialis- A

A

Flexes Forearm

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16
Q

Triceps Brachii- A

A

Extension of Forearm

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17
Q

Pronator Teres- A

A

Pronates Forearm at Superior RadioUlnar Joint

Assists flexion at Elbow Joint

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18
Q

Flexor Carpi Radialis- A

A

Equal Prime Mover for Flexion of Hand at Wrist Joint

Assists in Abduction of Hand

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19
Q

Palmaris Longus- A

A

Helps Flex Hand

Tightens Fascia of Palm/ Helps with Palmar Grip

20
Q

Flexor Carpi Ulnaris- A

A

Flexion of Hand at Wrist Joint

Adducts Hand

21
Q

Flexor Digitorum Superficialis- A

A

Flexes the PIP Joints of digits 2-5

Helps Flex Hand

22
Q

Flexor Digitorum Profundus- A

A

Flexes the DIP joints of digits 2-5

Helps Flex Hand

23
Q

Flexor Pollicis Longus- A

A

Flexes Digit 1 at IP Joint

24
Q

Pronator Quadratus- A

A

Pronation of Forearm at Inferior/Distal RadioUlnar Joint

Helps Stabilize the Distal Radio-ulnar Joint

25
Q

Brachioradialis- A

A

Helps flex forearm

Pronates and Supinates the forearm

26
Q

Extensor Carpi Radialis Longus- A

A

Extend the Hand

Abduct the Hand

27
Q

Extensor Carpi Radialis Brevis- A

A

Extend the Hand

Abduct the Hand

28
Q

Extensor Digitorum (Maximus)- A

A

Extends Digits 2-5
Extend Hand
Abducts Digits 2, 4, 5

29
Q

Extensor Digiti Minimi- A

A

Extend digit 5

30
Q

Extensor Carpi Ulnaris- A

A

Extend Hand

Helps Adduct Hand

31
Q

Supinator- A

A

Supinates Forearm

32
Q

Abductor Pollicis Longus- A

A

Abducts Digit 1 at CM joint

33
Q

Extensor Pollicis Brevis- A

A

Extends Digit 1 at MP Joint

34
Q

Extensor Pollicis Longus- A

A

Extends Digit 1 at IP Joint

35
Q

Extensor Indicis- A

A

Extends Digit 2 at MP Joint

36
Q

Anconeus- A

A

Extends Forearm

37
Q

Abductor Pollicis Brevis- A

A

Abducts Digit 1 at MP Joint

38
Q

Opponens Pollicis- A

A

Medially Rotates 1st Metacarpal

39
Q

Flexor Pollicis Brevis- A

A

Flexes Digit 1 at MP Joint

40
Q

Adductor Pollicis- A

A

Adducts Digit 1

41
Q

Abductor Digiti Minimi- A

A

Abducts Digit 5

42
Q

Flexor Digiti Minimi- A

A

Flexes Digit 5 at MP Joint

43
Q

Opponens Digiti Minimi- A

A

Laterally Rotates 5th Metacarpal

44
Q

Lumbricales- A

A

Flexes MP Joint

Extends IP Joint

45
Q

Dorsal Interossei- A

A

Abduct Digits 2-4
Flex MP Joints
Extends IP Joints

46
Q

Palmar Interossei- A

A

Adduct Digits 2, 4, & 5
Flex MP Joints
Extends IP Joints