Block 3: Muscular System - Muscle Actions Flashcards by Olivia Clare Johnson

Pronator Teres

rotation & flexion of the forearm

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Brachioradialis

flexion of the forearm

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Flexor Carpi Ulnaris

flexion of the hand

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Flexor Carpi Radialis

flexion of the hand

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Flexor Digitorum Superficialils

flexion of the hand

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Flexor Digitorum Profundus

flexion of the hand

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Palmaris Longus

flexion of the hand

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Extensor Pollicis Brevis

extension of digit 1 (hand)

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Abductor Pollicis Longus

abduction of digit 1 (hand)

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Extensor Digitorum

extension of digits 2-4 (hand)

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Extensor Digiti Minimi

extension of digit 5 (hand)

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Extensor Carpi Ulnaris

extension of the hand

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Extensor Carpi Radialis Longus

extension of the hand

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Extensor Carpi Radialis Brevis

extension of the hand

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Biceps Brachii

flexion & rotation of the forearm
flexion of the arm

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Brachialis

flexion of the forearm

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Triceps Brachii

extension of the forearm
extension of the arm

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Pectoralis Major

flexion, adduction, & medial rotation of the arm

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Anterior Deltoid Fibers

flexion & medial rotation of the arm

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Middle Deltoid Fibers

abduction of the arm

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Posterior Deltoid Fibers

extension & lateral rotation of the arm

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Supraspinatus

abduction of the arm

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Infraspinatus

adduction & lateral rotation of the arm

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Teres Major

extension, adduction, & medial rotation of the arm

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Teres Minor

extension & lateral rotation of the arm

Subscapularis

medial rotation of the arm

Latissimus Dorsi

adduction, extension, & medial rotation of the arm

Rhomboid Major

adduction, elevation, and inferior rotation of the scapula

Rhomboid Minor

adduction, elevation, and inferior rotation of the scapula

Superior Trapezius Fibers

elevation of the scapula elevation of the clavicle extension of the head

Middle Trapezius Fibers

adduction of the scapula

Inferior Trapezius Fibers

depression of the scapula

Levator Scapulae

elevation of the scapula

Pectoralis Minor

depression and protraction of the scapula

Serratus Anterior

abduction & superior rotation of the scapula

Rectus Abdominus

compression of the abdomen

Transverse Abdominus

compression of the abdomen

Internal Oblique

compression of the abdomen

External Oblique

compression of the abdomen

Erector Spinae (contraction of one side)

lateral flexion and rotation of the vertebral column

Erector Spinae (contraction on both sides)

extension of the vertebral column

External Intercostals

pull ribs upwards and together - forced inspiration - between ribs

Internal Intercostals

pull ribs downwards and together - forced expiration - between cartilage

Diaphragm

contracts downward - increases dimensions of the thoracic cavity

Platysma

depression of the lower lip depression of the mandible

Sternocleidomastoid (contraction of one side)

rotation of the head

Sternocleidomastoid (contraction of both sides)

flexion of the head

Temporalis

elevation & retraction of the mandible

Masseter

elevation & retraction of the mandible

Orbicularis Oculi

closes each eye

Zygomatic Minor

elevation of the lip - exposes upper teeth

Zygomatic Major

pulls corners of the mouth superiorly

Occipitalis

draws scalp posteriorly

Frontalis

raises eyebrows

Orbicularis Oris

puckers mouth

Psoas Major

flexion of the thigh

Illiacus

flexion of the thigh

Gluteus Minimus

abduction & medial rotation of the thigh

Gluteus Medius

abduction & medial rotation of the thigh

Gluteus Maximus

extension & lateral rotation of the thigh

Piriformis

abduction & lateral rotation of the thigh

Tensor Fascia Latae

flexion & abduction of the thigh

Adductor Magnus

adduction & medial rotation of the thigh

Adductor Longus

adduction, flexion, & medial rotation of the thigh

Gracilis

adduction of the thigh flexion of the leg

Adductor Brevis

adduction, flexion, & medial rotation of the thigh

Sartorius

flexion of the leg flexion & lateral rotation of the thigh

Rectus Femoris

extension of the leg flexion of the thigh

Vastus Medialis

extension of the leg

Vastus Intermedius

extension of the leg

Vastus Lateralis

extension of the leg

Semitendinosus

flexion of the leg extension of the thigh

Semimembranosus

flexion of the leg extension of the thigh

Biceps Femoris

flexion of the leg extension of the thigh

Gastrocnemius

flexion of the leg plantar flexion of the foot

Soleus

plantar flexion of the foot

Tibialis Anterior

dorsiflexion and inversion of the foot

Tibialis Posterior

inversion & plantar flexion of the foot

Fibularis Longus

eversion & plantar flexion of the foot

Fibularis Brevis

eversion & plantar flexion of the foot

Extensor Digitorum Longus

dorsiflexion of the foot extension of digits 2-5 (foot)

Flexor Hallucis Longus

plantar flexion of the foot flexion of digit 1 (foot)

Flexor Digitorum Longus

plantar flexion of the foot flexion of digits 2-5 (foot)