Muscles of the Arm & Forearm, Anatomy - Labeling muscles of lower limb, BIO 201 Practical 3 muscle

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103 Terms

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biceps brachii

Large muscle with 2 heads

FUNCTION:

-flexes forearm

-flexes arm

-supinates forearm

<p>Large muscle with 2 heads</p><p>FUNCTION:</p><p>-flexes forearm</p><p>-flexes arm</p><p>-supinates forearm</p>
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Brachialis

LOCATION: deep to biceps brachia; anterior to humerus

FUNCTION: flexes forearm

<p>LOCATION: deep to biceps brachia; anterior to humerus</p><p>FUNCTION: flexes forearm</p>
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Triceps Brachii

large muscle with 3 heads

CONTENTS:

-Long head: superficial; medial side

-Medial head: deep; medial side

-Lateral head: lateral side

FUNCTIONS:

-extends forearm

-extend arm

<p>large muscle with 3 heads</p><p>CONTENTS:</p><p>-Long head: superficial; medial side</p><p>-Medial head: deep; medial side</p><p>-Lateral head: lateral side</p><p>FUNCTIONS:</p><p>-extends forearm</p><p>-extend arm</p>
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Brachioradialis

large, superficial lateral muscle

FUNCTION:

-flexes forearm

-pronates forearm

supinates forearm

<p>large, superficial lateral muscle</p><p>FUNCTION:</p><p>-flexes forearm</p><p>-pronates forearm</p><p>supinates forearm</p>
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Pronator teres

LOCATION: lateral to brachioradialis

FUNCTION:

-pronates forearm

-flexes forearm (weakly)

<p>LOCATION: lateral to brachioradialis</p><p>FUNCTION:</p><p>-pronates forearm</p><p>-flexes forearm (weakly)</p>
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Flexor carpi radialis

LOCAITON: medial and inferior to pronator teres; medial to brachioradialis in forearm

FUNCTION:

-flexes hand

-abducts hand

<p>LOCAITON: medial and inferior to pronator teres; medial to brachioradialis in forearm</p><p>FUNCTION:</p><p>-flexes hand</p><p>-abducts hand</p>
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Palmaris longus

LOCATION: medial to flexor carpi radialis

FUNCTION:

-flexes wrist (weakly)

<p>LOCATION: medial to flexor carpi radialis</p><p>FUNCTION:</p><p>-flexes wrist (weakly)</p>
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flexor carpi ulnaris

most medial muscle of posterior forearm

FUNCTION:

-flexes hand

-adducts hand

<p>most medial muscle of posterior forearm</p><p>FUNCTION:</p><p>-flexes hand</p><p>-adducts hand</p>
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Flexor digitorum superficialis

LOCATION: deep to tendons of flexors, palmaris,

FUNCTION:

-flexes hand,

-flexes proximal and middle phalanx of each finger

<p>LOCATION: deep to tendons of flexors, palmaris,</p><p>FUNCTION:</p><p>-flexes hand,</p><p>-flexes proximal and middle phalanx of each finger</p>
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extensor carpi unlaris

LOCATION: lateral to flexor carpi ulnaris

FUNCTION:

-adducts hand

-extends hand

<p>LOCATION: lateral to flexor carpi ulnaris</p><p>FUNCTION:</p><p>-adducts hand</p><p>-extends hand</p>
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extensor digitorum minimi

LOCATION: lateral to extensor carpi ulneris

FUNCTION:

-extends hand

-extends proximal phalanx of 5th digit

<p>LOCATION: lateral to extensor carpi ulneris</p><p>FUNCTION:</p><p>-extends hand</p><p>-extends proximal phalanx of 5th digit</p>
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extensor digitorum

LOCATION: lateral to extensor digitorum minim

FUNCTION:

-extends hand

-extends proximal, middle and distal phalanges

<p>LOCATION: lateral to extensor digitorum minim</p><p>FUNCTION:</p><p>-extends hand</p><p>-extends proximal, middle and distal phalanges</p>
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Extensor carpi radialis brevis

LOCATION: lateral to extensor digitorum

FUNCTION:

-extends hand

-abducts hand

<p>LOCATION: lateral to extensor digitorum</p><p>FUNCTION:</p><p>-extends hand</p><p>-abducts hand</p>
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Extensor carpi radialis longus

LOCATION: lateral to extensor radialis brevis

FUNCTION:

-extends hand

-abducts hand

<p>LOCATION: lateral to extensor radialis brevis</p><p>FUNCTION:</p><p>-extends hand</p><p>-abducts hand</p>
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Sartorius

anterior compartment

<p>anterior compartment</p>
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rectus femoris

anterior compartment

<p>anterior compartment</p>
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vastus lateralis

anterior compartment

<p>anterior compartment</p>
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vastus medialis

anterior compartment

<p>anterior compartment</p>
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vastus intermedius muscle

anterior compartment

undearneath rectus femoris muscle

<p>anterior compartment</p><p>undearneath rectus femoris muscle</p>
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tendon of quadriceps femoris

anterior compartment

<p>anterior compartment</p>
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pectineus

medial compartment

A

<p>medial compartment</p><p>A</p>
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adductor brevis muscle

medial compartment

C

<p>medial compartment</p><p>C</p>
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adductor longus

medial compartment

D

<p>medial compartment</p><p>D</p>
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adductor magnus muscle

medial compartment

E

<p>medial compartment</p><p>E</p>
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gracilis

medial compartment

B

<p>medial compartment</p><p>B</p>
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semitendinosus muscle

posterior compartment

<p>posterior compartment</p>
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biceps femoris muscle (long head)

posterior compartment

#2

<p>posterior compartment</p><p>#2</p>
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biceps femoris muscle (short head)

posterior compartment

#1

<p>posterior compartment</p><p>#1</p>
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semimembranosus muscle

posterior compartment

<p>posterior compartment</p>
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tensor fascia lata

gluteal compartment

<p>gluteal compartment</p>
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gluteus maximus muscle

gluteal compartment

<p>gluteal compartment</p>
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gluteus medias muscle

gluteal compartment

<p>gluteal compartment</p>
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piriformis muscle

gluteal compartment

<p>gluteal compartment</p>
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superior gemellus muscle

gluteal compartment

<p>gluteal compartment</p>
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inferior gemellus muscle

gluteal compartment

<p>gluteal compartment</p>
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obturator internus muscle

gluteal compartment

<p>gluteal compartment</p>
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quadratus femoris muscle

gluteal compartment

<p>gluteal compartment</p>
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tibialis anterior muscle

anterior compartment

<p>anterior compartment</p>
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extensor digitorum longus muscle

anterior compartment

<p>anterior compartment</p>
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extensor hallucis longus muscle

anterior compartment

<p>anterior compartment</p>
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fibularis longus muscle

lateral compartment

<p>lateral compartment</p>
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fibularis brevis muscle

lateral compartment

<p>lateral compartment</p>
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plantaris muscle

superficial posterior compartment

<p>superficial posterior compartment</p>
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gastrocnemius

superficial posterior compartment

<p>superficial posterior compartment</p>
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calcaneal tendon

superficial posterior compartment

achilles tendon

<p>superficial posterior compartment</p><p>achilles tendon</p>
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plantaris tendon

superficial posterior compartment

<p>superficial posterior compartment</p>
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soleus

superficial posterior compartment

underneath calcaneal tendon

<p>superficial posterior compartment</p><p>underneath calcaneal tendon</p>
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tibialis posterior muscle

deep posterior compartment

<p>deep posterior compartment</p>
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flexor digitorum longus muscle

deep posterior compartment

<p>deep posterior compartment</p>
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flexor hallucis longus muscle

deep posterior compartment

<p>deep posterior compartment</p>
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popliteus muscle

deep posterior compartmetn

<p>deep posterior compartmetn</p>
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extensor digitorum brevis muscle

dorsal compartment

<p>dorsal compartment</p>
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extensor hallucis brevis muscle

dorsal compartment

<p>dorsal compartment</p>
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plantar aponeurosis

plantar compartment

<p>plantar compartment</p>
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flexor digitorum brevis muscle

plantar compartment

<p>plantar compartment</p>
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Frontalis

Location: Under the frontal bone, forehead

Muscle Action: Elevate the eyebrows

<p>Location: Under the frontal bone, forehead</p><p>Muscle Action: Elevate the eyebrows</p>
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Temporalis

Location: On top of the temporal bone

Muscle Action: Elevate the mandible

<p>Location: On top of the temporal bone</p><p>Muscle Action: Elevate the mandible</p>
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Orbicularis Oculi

Location:circular muscle around the eye

Muscle actions: Closes the eyes

<p>Location:circular muscle around the eye</p><p>Muscle actions: Closes the eyes</p>
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Orbicularis Oris

Location: Round muscle around the mouth

Muscle actions: Closes the mouth

<p>Location: Round muscle around the mouth</p><p>Muscle actions: Closes the mouth</p>
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Masseter

Location: On the sides of the mandible

Muscle actions: Elevate the mandible, biting and chewing muscle

<p>Location: On the sides of the mandible</p><p>Muscle actions: Elevate the mandible, biting and chewing muscle</p>
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Sternocleidomastoid

Location: From ear to clavicle to sternum

Muscle actions: Used in active breathing, rotate the head, flex the head

<p>Location: From ear to clavicle to sternum</p><p>Muscle actions: Used in active breathing, rotate the head, flex the head</p>
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Rectus Abdominis

Cadaver/Supine

Location: Front abs "6-pack abs" , has the lines through them

Muscle actions: flex the vertebral column (spine), compress the abdomen

<p>Cadaver/Supine</p><p>Location: Front abs "6-pack abs" , has the lines through them</p><p>Muscle actions: flex the vertebral column (spine), compress the abdomen</p>
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Rectus Sheath

Cadaver/Supine

Location:Light/white sheath on top of the rectus abdominis. Top layer on top of the abs

<p>Cadaver/Supine</p><p>Location:Light/white sheath on top of the rectus abdominis. Top layer on top of the abs</p>
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Linea Alba

Cadaver/Supine

Location: the line down the middle of the abs

<p>Cadaver/Supine</p><p>Location: the line down the middle of the abs</p>
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External Obliques

Cadaver/Supine

Location: Outside/side of ab muscles, striations are at an angle

Muscle Actions: Flex the vertebral column, rotate the vertebral column, laterally flex the vertebral column, compress the abdomen

<p>Cadaver/Supine</p><p>Location: Outside/side of ab muscles, striations are at an angle</p><p>Muscle Actions: Flex the vertebral column, rotate the vertebral column, laterally flex the vertebral column, compress the abdomen</p>
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Internal Abdominal Oblique

Cadaver/Supine

Location: Under the external oblique. Striations are at an angle.

Muscle actions: Flex vertebral column, rotate the vertebral column, laterally flex the vertebral column, compress the abdomen

<p>Cadaver/Supine</p><p>Location: Under the external oblique. Striations are at an angle.</p><p>Muscle actions: Flex vertebral column, rotate the vertebral column, laterally flex the vertebral column, compress the abdomen</p>
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Transversus Abdominis

Cadaver/Supine

Location: Deepest of all of the ab muscles

Muscle actions: compress the abdomen, core muscle

<p>Cadaver/Supine</p><p>Location: Deepest of all of the ab muscles</p><p>Muscle actions: compress the abdomen, core muscle</p>
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Serratus anterior

Location: Under the arm on the side

Muscle actions: protract the scapula

<p>Location: Under the arm on the side</p><p>Muscle actions: protract the scapula</p>
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Pectoralis major

Cadaver/Supine

Location: Upper chest muscle

Muscle actions: flex and extend the arm, adduct the arm

<p>Cadaver/Supine</p><p>Location: Upper chest muscle</p><p>Muscle actions: flex and extend the arm, adduct the arm</p>
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Pectoralis Minor

Cadaver/Supine

Location: Under the pectoralis major

Muscle actions: Depress the scapula, protract the scapula

<p>Cadaver/Supine</p><p>Location: Under the pectoralis major</p><p>Muscle actions: Depress the scapula, protract the scapula</p>
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External Intercostal

Cadaver/Supine

Location: Shiny stuff, between the ribs on the side. Under the pec minor

Muscle actions: Elevate the ribs, increase thoracic volume

<p>Cadaver/Supine</p><p>Location: Shiny stuff, between the ribs on the side. Under the pec minor</p><p>Muscle actions: Elevate the ribs, increase thoracic volume</p>
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Internal Intercostal

Cadaver/Supine

Location: Medial to the External intercostal

Muscle actions: depress the ribs

<p>Cadaver/Supine</p><p>Location: Medial to the External intercostal</p><p>Muscle actions: depress the ribs</p>
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Diaphragm

Cadaver/Supine

Location: Under the torso/chest, flappy piece after the torso is lifted

Muscle actions: elevate the ribs, increase the thoracic volume

<p>Cadaver/Supine</p><p>Location: Under the torso/chest, flappy piece after the torso is lifted</p><p>Muscle actions: elevate the ribs, increase the thoracic volume</p>
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Trapezius

Cadaver/Prone

Location: Diamond shaped, from head to shoulders down to T12, most superficial

Muscle actions: Elevate and depress the scapula, retract the scapula

<p>Cadaver/Prone</p><p>Location: Diamond shaped, from head to shoulders down to T12, most superficial</p><p>Muscle actions: Elevate and depress the scapula, retract the scapula</p>
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Rhomboideus Major

Cadaver/Prone

Location: under the trapezius, under the rhomboideus minor

Muscle Actions: Retract the scapula

<p>Cadaver/Prone</p><p>Location: under the trapezius, under the rhomboideus minor</p><p>Muscle Actions: Retract the scapula</p>
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Rhomboideus Minor

Cadaver/Prone

Location: Under the trapezius/ Above the rhomboideus major

Muscle actions: retract the scapula

<p>Cadaver/Prone</p><p>Location: Under the trapezius/ Above the rhomboideus major</p><p>Muscle actions: retract the scapula</p>
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Levator Scapulae

Cadaver/Prone

Location: Dangling strip from under the ear to the scapula

Muscle actions: elevate the scapula

<p>Cadaver/Prone</p><p>Location: Dangling strip from under the ear to the scapula</p><p>Muscle actions: elevate the scapula</p>
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Teres Minor

Cadaver/Prone

Location: from scapula to under the deltoid, Minor is above the teres major

Muscle actions: laterally rotate the arm

<p>Cadaver/Prone</p><p>Location: from scapula to under the deltoid, Minor is above the teres major</p><p>Muscle actions: laterally rotate the arm</p>
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Teres Major

Cadaver/Prone

Location: from scapula to under the deltoid, wraps around, Under the teres minor

Muscle actions: Extend the arm, adduct the arm

<p>Cadaver/Prone</p><p>Location: from scapula to under the deltoid, wraps around, Under the teres minor</p><p>Muscle actions: Extend the arm, adduct the arm</p>
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Latissimus Dorsi

Cadaver/Prone

Location: Under the teres major, back side muscle that wraps around to under arm

Muscle actions: Extend the arm, adduct the arm

<p>Cadaver/Prone</p><p>Location: Under the teres major, back side muscle that wraps around to under arm</p><p>Muscle actions: Extend the arm, adduct the arm</p>
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Erector Spinae

Cadaver/Prone

Location: surrounds the spine

Muscle actions: Extend the vertebral column, rotate the vertebral column, laterally flex the vertebral column

<p>Cadaver/Prone</p><p>Location: surrounds the spine</p><p>Muscle actions: Extend the vertebral column, rotate the vertebral column, laterally flex the vertebral column</p>
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Deltoid

Cadaver/Supine

Location: Triangle shaped, top of shoulder muscle

Muscle actions: Flex and extend the arm, abduct the arm

<p>Cadaver/Supine</p><p>Location: Triangle shaped, top of shoulder muscle</p><p>Muscle actions: Flex and extend the arm, abduct the arm</p>
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Supraspinatus

Cadaver/Prone

Location: between the deltoid and the neck, top of the scapula

Muscle actions: abduct the arm

<p>Cadaver/Prone</p><p>Location: between the deltoid and the neck, top of the scapula</p><p>Muscle actions: abduct the arm</p>
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Infraspinatus

Cadaver/Prone

Location: below the supraspinatus, lower part of the scapula, under or medial to the deltoid muscle

Muscle actions: Laterally rotate the arm

<p>Cadaver/Prone</p><p>Location: below the supraspinatus, lower part of the scapula, under or medial to the deltoid muscle</p><p>Muscle actions: Laterally rotate the arm</p>
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Subscapularis

Location: anterior side of the scapular

Muscle action: Medially rotate the arm

<p>Location: anterior side of the scapular</p><p>Muscle action: Medially rotate the arm</p>
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buccinator

inner cheek muscle, runs laterally from mouth to ear

<p>inner cheek muscle, runs laterally from mouth to ear</p>
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Platysma

chin to clavicle. runs vertically.

<p>chin to clavicle. runs vertically.</p>
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zygomaticus major

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zygomaticus minor

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Nasalis

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Occipitofrontalis

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Depressor anguli oris

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omohyoid

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sternohyoid

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tensor fasciae latae

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iliacus

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psoas major

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Gracilis

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patella

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tibia

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