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B12 MSK > Muscle Actions, Origins and Insertions > Flashcards

Muscle Actions, Origins and Insertions Flashcards

1
Q

Coracobrachialis:

  1. Action
  2. Origin
  3. Insertion
A
  1. flex arm
  2. coracoid process
  3. mid shaft of humerus
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2
Q

Brachialis:

  1. action
  2. origin
  3. insertion
A
  1. flex elbow
  2. distal humerus
  3. ulna
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3
Q

Biceps Brachii:

  1. action
  2. origin
  3. insertion
A
  1. flex and supinate arm at shoulder
  2. long head - supraglenoid tubercle
    short head - coracoid process
  3. radial tuberosity
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4
Q

Triceps Brachii:

  1. action
  2. origin
  3. insertion
A
  1. extension of forearm
  2. long head - infraglenoid tubercle of scapula
    medial head - posterior surface of humerus
    short head - lateral surface of humerus
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5
Q

Trapezius

  1. action
  2. origin
  3. insertion
A
  1. elevation of scapula. Abduction of arm
  2. axial skeleton
  3. spine of scapula, acromion, clavicle
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6
Q

Deltoid

  1. Action
  2. Origin
  3. Insertion
A
  1. abduction, flexion and extension
  2. spine of scapula, acromion and clavicle
  3. Humerus
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7
Q

Origin of Levator Scapulae

A

C1-C5

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8
Q

Origin of Rhombid Major

A

T2-T5

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9
Q

Origin of Rhomboid Minor

A

C8-T1

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10
Q

Action of Supraspinatus

A

Abduction

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11
Q

Action of Infraspinatus

A

Lateral Rotation

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12
Q

Action of Teres Minor

A

Lateral Rotation

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13
Q

Action of Subscapularis

A

Medial Rotation

Extension

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14
Q

Name 4 structures that pass through the carpal tunnel

A
  • FDP tendon
  • FDS tendon
  • FPL tendon
  • median nerve
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15
Q

Where does the FCU insert?

A

pisiform and base of metacarpal V

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16
Q

Where does the FCR insert?

A

base of metacarpals II and III

17
Q

Pronator Teres

  1. Origin
  2. Insertion
A
  1. medial epicondyle and coronoid process of ulna

2. lateral midshaft of radius

18
Q

Origin of FDP?

A

Ulna and Interosseous Membrane

19
Q

Origin of flexor policis longus

A

radius and interosseous membrane

20
Q

Aconeus

  1. action
  2. origin
  3. insertion
A
  1. abduction of forearm in pronation
  2. lateral epicondyle
  3. olecranon and ulna
21
Q

Supinator

  1. Origin
  2. Insertion
A
  1. lateral epicondyle and ulna

2. radius

22
Q

Piriformis

  1. Origin
  2. Insertion
  3. Action
A
  1. sacrum
  2. greater trochanter
  3. lateral rotation and abduction
23
Q

Obturator Internus

  1. Origin
  2. Insertion
  3. Action
A
  1. pubis and ischium
  2. greater trochanter
  3. lateral rotation and abduction
24
Q

Gemellus Superior

  1. Origin
  2. Insertion
  3. Action
A
  1. ischial spine
  2. greater trochanter
  3. lateral rotation and abduction
25
Q

Gemellus Inferior

  1. Origin
  2. Insertion
  3. Action
A
  1. Ischial tuberosity
  2. greater trochanter
  3. lateral rotation and abduction
26
Q

Quadratus Femoris

  1. Origin
  2. Insertion
  3. Action
A
  1. ischium
  2. intertrochanteric crest
  3. lateral rotation
27
Q

Insertion of gluteus maximus and medius

A

greater trochanter

28
Q

Insertion of the iliopsoas

A

lesser trochanter

29
Q

Sartorius

  1. Origin
  2. Insertion
  3. Action
A
  1. iliac spine
  2. medial tibia
  3. flex hip and knee
30
Q

Rectus Femoris

  1. Origin
  2. Insertion
  3. Action
A
  1. inferior iliac spine
  2. quadriceps tendon
  3. extend knee; flex hip
31
Q

Semitendinosus

  1. Origin
  2. Insertion
  3. Action
A
  1. ischial tuberosity
  2. tibia
  3. flex knee
    extend thigh
32
Q

Semimembranosus

  1. Origin
  2. Insertion
  3. Action
A
  1. ischial tuberosity
  2. tibia
  3. flexion of knee; extend thigh
33
Q

Vastus Medialis

  1. Origin
  2. Insertion
  3. Action
A
  1. intertrochanteric line
  2. quadriceps tendon
  3. extend knee
34
Q

Vastus Lateralis

  1. Origin
  2. Insertion
  3. Action
A
  1. greater trochanter
  2. quadriceps tendon
  3. extend knee
35
Q

Vastus Intermedialis

  1. Origin
  2. Insertion
  3. Action
A
  1. femoral shaft
  2. quadriceps tendon
  3. extend knee

B12 MSK (12 decks)

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