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Anatomy > Muscles > Flashcards

Muscles Flashcards

1
Q

Action of Orbicularis Oculi

A

Closes eye

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2
Q

Action of Occipitofrontalis

A

Elevate eyebrows & wrinkle forehead skin. Retract scalp w/occipital belly

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3
Q

Action of Zygomaticus Major

A

Elevates corner of mouth

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4
Q

Action of Orbicularis Oris

A

Purses lips

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5
Q

Action of Masseter

A

Elevates jaw

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6
Q

Action of Superior Rectus

A

Elevates & medially rotates eye

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7
Q

Action of Inferior Rectus

A

Depresses and medially rotates eye

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8
Q

Action of Medial Rectus

A

Medially moves eye

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9
Q

Action of Lateral Rectus

A

Moves eye laterally

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10
Q

Action of Superior Oblique

A

Depresses and laterally rotates eye

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11
Q

Action of Inferior Oblique

A

Elevates and laterally rotates eye

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12
Q

Action of Sternocleidomastoid

A

Flexes neck

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13
Q

Action of Pectoralis major

A

Flexes arm

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14
Q

Action of pectoralis minor

A

Protracts and rotates scapula inferiorly

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15
Q

Action of external intercostal(s)

A

Elevates ribs

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16
Q

Action of intternal intercostal(s)

A

Depresses ribs

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17
Q

Action of rectus abdominus

A

Flexes vertebral column

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18
Q

Action of trapezius

A

Stabilize and move scapula

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19
Q

Action of Latissimus dorsi

A

Extends arm

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20
Q

Action of splenius capitus

A

Extends neck

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21
Q

Action of Erector Spinae group

A

Extends vertebral column

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22
Q

Action of teres major*

A

Pulls anterior surface of humerus medially towards trunk (internal rotation)

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23
Q

Action of rhomboids*

A

Scapular retraction around scapulothoracic joint

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24
Q

Action of infraspinatus

A

Laterally rotates arm

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25
Q

Action of supraspinatus

A

Abducts arm

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26
Q

Action of teres minor

A

Laterally rotates arm (synergist to infraspinatus)

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27
Q

Action of deltoid

A

Abducts arm

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28
Q

Action of biceps brachii

A

Flexes and supinates forearm

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29
Q

Action of brachialis

A

Flexes forearm

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30
Q

Action of triceps brachii

A

Extends forearm

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31
Q

Action of brachioradialis

A

Synergist in forearm extention

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32
Q

Action of extensor digitorum

A

Extends fingers

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33
Q

Action of flexor carpi ulnaris

A

Flexes wrist

34
Q

Action of palmaris longus*

A

Wrist flexion & tensioning palmar aponeurosis; relevant for grip

35
Q

Action of Iliopsoas

A

Thigh flexion

36
Q

Action of gracilis*

A

Thigh flexion, adduction. Knee: leg flexion, leg internal rotation

37
Q

Action or sartorius*

A

Synergist muscle (weak by itself)
Hip: flex, weakly abduct, laterally rotate femur
Knee: flex leg, when flexed, medially rotate leg

38
Q

Action tensor fasciae latae*

A

Internally rotate and abduct hip
Works w/gluteus medius and minimus
Works w/IT band & gluteus maximus to abduct hip
Works with rectus femoris for hip flexion

39
Q

Action of quadriceps femoris group

A

Extends the knee

40
Q

Action of glutes*

A

Abduction & extension of thigh.

Some also assis abduction, external rotation and internal rotation of thigh

41
Q

Action of hamstring group

A

Flexes knee

42
Q

Action of gastronemius

A

Plantar flexion

43
Q

Action of fibularis longus

A

Plantar flexion and eversion

44
Q

Action of tibialis anterior

A

Dorsiflexion

45
Q

Neck muscles

A 
Diagastric
   1)anterior belly
   2)posterior belly
   3)Insertion - intermediate tendon, hyoid bone
Mylohyoid
Thyrohyoid
Sternocleidomastoid
Sternohyoid
Sternothyroid
46
Q

Head muscles

A 
Occipitofrontalis
Temporalis
Orbicularis Oculi
Orbicularis Oris
Zygomaticus Major
Masseter
47
Q

Eye muscles

A 
Superior rectus
Interior rectus
Medial rectus
Lateral rectus
Inferior oblique
Superior oblique
48
Q

Anterior trunk muscles

A 
Pectoralis major
Pectoralis minor
Serratus anterior
External intercostals
Internal intercostals
Rectus abdominus
External oblique
Internal oblique
Tenasverse abdominus
   1) Linea alba (structure, not muscle
   2) Diaphragm
49
Q

Posterior trunk muscles

A 
Trapezius
Latissimus dorsi
Rhomboids major and minor
Splenius capitis*
Levitator scapulae
Teres major
50
Q

Erector spinae muscles

A

Spinalis
Longissimus
Iliocostals

51
Q

Rotator cuff muscles

A

Subscapularis
Infraspinatus
Supraspinatus
Teres minor

52
Q

Shoulder arm muscles

A 
Deltoid
Biceps brachii
  1) Long head
  2) Short head
Brachialis
Triceps brachii
  1) Long head
  2) Lateral head
  3) Medial head
53
Q

Forearm muscles

A 
Brachioradialis
Extensor digitorum
Extensor carpi ulnaris
Flexor carpi ulnaris
Palmaris longus
Flexor carpi radialis
Pronator teres
54
Q

Hip & Thigh muscles, anterior

A 
Iliopsoas
  1) Iliacus
  2) Psoas Major
Adductor Longus
Gracilis
Sartorius
Tensor fasciae latae
Iliotibial Tract/Band (not muscle - structure)
Quadraceps Femoris group
  1) Rectus femoris
  2) Vastus Lateralis
  3) Vastus Medialis
  4) Vastus Intermedius
55
Q

Hips & Thigh muscles, posterior

A 
Gluteus maximus
Gluteus medius
Adductor magnus
Hamstring group
  1) Biceps femoris
  2) Semitendenosus
  3) Semimembranosus
56
Q

Leg muscles

A 
Gastrocnemius
  1) Lateral head
  2) Medial head
Soleus
Fibularis longus
Extensor digitorum longus
Tibialis Anterior
57
Q

Origin & insertion of pectoralis major

A

I: greater tubercle of humerus
O: sternal end of clavicle, sternum, and cartilage of ribs 1-6

58
Q

Origin and insertion of rectus abdominis

A

O: pubic crest & symphysis
I: xiphoid process and costal cartilage of ribs 5-7

59
Q

Origin and insertion of pectoralis minor

A

O: ribs 3-5
I: coracoid process of scapula

60
Q

Origin and insertion of trapezius

A

O: occipital bone, spines of C7 and throracic vertebre
I: acromion and spine of scapula, lateral clavicle

61
Q

Origin and insertin of Latissimus dorsi

A

O: lower six thoracic vertebre via thoracolumbar fascia, lumbar vertebre, iliac crest
I: intertubercular sulcus of humerus

62
Q

Origin and Insertion of Infraspinatus

A

O: infraspinous fossa of scapula
I: greater tubercle of humerus

63
Q

Origin andninsertion of supraspinatus

A

O: supraspinous fossa of scapula
I: greater tubercle of humerus

64
Q

Origin & insertion of teres minor

A

O: lateral border of scapula
I: greater tubercle of humerus

65
Q

Origin & Insertion of deltoid

A

O: lateral third of clavicle, acromion and scapular spine
I: deltoid tuberosity of humerus

66
Q

Origins and insertion of Biceps brachii long head and short head

A

Long head O: supraglenoid tubercle
Short head O: posterior shaft of humerus
Both I: radial tuberosity

67
Q

Origins and insertion of triceps brachi

A

Long head O: infraglenoid tubercle of scapula
Lateral head O: posterior shaft of humerus
Medial head O: posterior shaft of humerus
All I: olecranon of ulna

68
Q

Origin and insertion of brachioradialis

A

O: distal humerus
I: styloid process of radius

69
Q

Iliopsoas origins and insertion

A

Iliacus O: iliac fossa
Psoas major O: lumbar vertebre and T12
Both insertion: lesser trochanter of femur

70
Q

Origin and insertion of Adductor longus

A

O: pubis near pubic symphysis
I: linea aspera

71
Q

Origin and insertion of gracilis

A

O: pubis
I: medial aspect of tibia

72
Q

Origin and insertion of sartorius

A

O: anterior superior iliac spine
I: medial aspect of proximal tibia

73
Q

Origin and insertion of tensor fasciae latae

A

O: anterior aspect of iliac crest and anterior superior iliac spine
I: iliotibial tract

74
Q

Origin and insertion of rectus femoris

A

O: anterior inferior iliac spine
I: patella and tibial tuberosity via patellar ligament

75
Q

Origin and insertion of vastus lateralis

A

O: greater trochanter of femur
I: patella and tibial tuberosity via patellar ligament

76
Q

Origin and insertion of vastus medialis

A

O: linea aspera of femur
I: patella and tibial tuberosity via patellar ligament

77
Q

Origin and insertion of gluteus medius

A

O: ilium
I: greater trochanter of femur

78
Q

Origin and insertion of gluteus maximus

A

O: ilium sacrum and coccyx
I: gluteal tuberosity of femur

79
Q

Origin and insertions of hamstring group

A

All O: ischial tuberosity
Biceps femoris I: lateral condyle of tibia
Semitendonosus I: medial aspect of tibia
Semimembranosus I: medial condyle of tibia

80
Q

Origins and insertion of gastrocnemius

A

Lateral head O: lateral condyle of femur
Medial head O: medial condyle of femur
Both I: calcaneus of calcaneal tendon

81
Q

Origin and insertion of tibialis anterior

A

O: lateral condyle and tibial shaft
I:medial cuneiform and first metatarsal bone

Anatomy (7 decks)

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