Muscles Flashcards

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1
Q

Epicranius (Frontalis & Occipitalis)

A

raise eyebrows & pull scalp posterior

Facial nerve, CN VII

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2
Q

Obicularis Occulii

A

Closes eye

Facial nerve, CN VII

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3
Q

Obicularis Oris

A

Closes lips

Facial nerve, CN VII

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4
Q

Zygomaticus

A

Raises corners of mouth

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5
Q

Buccinator

A

Compresses Cheek, assists during chewing Facial nerve, CN VII

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6
Q

Masseter

A

Elevates mandible

Trigeminal nerve, CN V

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7
Q

Temporalis

A

Elevates & retracts mandible

Trigeminal nerve, CN V

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8
Q

Platysma

A

Tenses skin of anterior neck and depresses mandible

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9
Q

Sternocleidomastoid Muscle ( SCM)

A

Unilateral action rotate&flex; Bilateral action neck flexion
Spinal accessory nerve, CN XI

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10
Q

Erector Spinae (iliocostalis,longissimus&spinalis)

A

Extend spine “I LOVE SPINE”; semispinalis is synergistic with these muscles

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11
Q

Rectus Abdominus

A

Flexes spine and trunk

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12
Q

External Oblique

A

Rotates spine & trunk

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13
Q

Internal Oblique

A

Rotates spine & trunk

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14
Q

Transversus Abdominus

A

Compresses abdominal contents

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15
Q

Trapezius

A

Elevates scapula & extend head/neck

Spinal accessory nerve, CN XI

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16
Q

Pectoralis Major

A

Flexion of humerus

17
Q

Latissimus Dorsi

A

Extension of humerus

18
Q

Deltoid

A

Primarily Abduction of humerus

19
Q

Triceps Brachii

A

Extensor of elbow

20
Q

Biceps Brachii

A

Strong Flexor of elbow Powerful supinator of forearm

21
Q

Brachialis

A

Strongest Flexor of elbow

22
Q

Brachioradialis

A

Synergist Flexion of elbow

23
Q

Iliopsoas (Psoas Major & Iliacus muscles)

A

Prime Hip flexor

24
Q

Sartorius

A

Synergist; Flex knee/hip & External rot femur Tailor’s muscle

25
Q

Adductor Group (Adductor Longus,Adductor Magnus & Adductor Brevis)

A

Adductus Hip

26
Q

In the Adductor Group - Gracillis Adductus Hip

A

Adductus Hip

27
Q

Rectus Femoris

A

Extension of Knee & flexion of hip

1/4 of Quadriceps Femoris, Inn by Femoral Nerve

28
Q

Vastus Lateralis/Medialis/Intermedialis

A

Extension of knee Other 3/4 of Quadriceps Femoris, Inn by Femoral Nerve

29
Q

Gluteus Maximus

A

Extension of Hip

30
Q

Gluteus Medius

A

Abduction of hip

31
Q

Biceps Femoris

A

Flexion of knee & Extension of Hip 1/3 of Hamstrings, Inn by Sciatic Nerve

32
Q

Semitendinosis/Semimembranosis

A

Flexion of knee & Extension of Hip Other 2/3 of Hamstrings, Inn by Sciatic Nerve

33
Q

Tibialis Anterior

A

Dorsi Flexion of foot

34
Q

Extensor Digitorum Longus

A

Extension of toes

35
Q

Fibularis Longus

A

Eversion of foot

36
Q

Soleus

A

Strongest Plantar flexor

37
Q

Gastrocnemius

A

Plantar Flexion