Muscles

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51 Terms

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Epicranius
Head, Neck, Face

Origin: Occipital bone

Insertion: Skin and muscle around the eye

Action: Raise eyebrow
2
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Orbicularis Oris
Head, Neck, Face

Origin: Muscles near the mouth

Insertion: Skin of the lips

Action: Pucker lips
3
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Orbicularis Oculi
Head, Neck, Face

Origin: Frontal bone and maxilla

Insertion: Skin around the eye

Action: Close eye
4
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Buccinator
Head, Neck, Face

Origin: Maxilla and mandible

Insertion: Orbicularis oris

Action: Compress cheek (blowing)
5
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Zygomaticus
Head, Neck, Face

Origin: Zygomatic bone

Insertion: Orbicularis oris

Action: Smiling
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Platysma
Head, Neck, Face

Origin: Chest-fascia

Insertion: Mandible

Action: Drooping face, frowning
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Masseter
Head, Neck, Face

Origin: Zygomatic arch

Insertion: Mandible

Action: Chewing, closing jaw
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Temporalis
Head, Neck, Face

Origin: Temporal bone

Insertion: Mandible

Action: Close mouth
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Sternocleidomastoid
Head, Neck, Face

Origin: Sternum and clavicle

Insertion: Temporal bone

Action: Pull head to the side
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Splenius Capitis
Head, Neck, Face

Origin: Cervical and thoracic

Insertion: Temporal bone

Action: Turn head, look left and right
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Trapezius
Pectoral Girdle

Origin: Cervical and thoracic vertebrae

Insertion: Clavicle

Action: Rotation, elevation, and depression
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Levator scapulae
Pectoral Girdle

Origin: Cervical vertebrae

Insertion: Scapula

Action: Raising and lowering shoulder
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Rhomboid Minor
Pectoral Girdle

Origin: Cervical and thoracic vertebrae

Insertion: Scapula

Action: Retracts and rotates scapula
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Rhomboid Major
Pectoral Girdle

Origin: Thoracic vertebrae

Insertion: Scapula

Action: Retraction
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Serratus Anterior
Pectoral Girdle

Origin: Ribs

Insertion: Scapula

Action: Protraction, rotation, and depression
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Pectoralis Minor
Pectoral Girdle

Origin: Ribs

Insertion: Coracoid Process

Action: Moves shoulder forward and downward
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Teres Major
Arm

Origin: Scapula

Insertion: Humerus

Action: Extends, adducts, rotate medially
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Supraspinatus
Arm

Origin: Scapula

Insertion: Humerus

Action: Abducts the arm
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Deltoid
Arm

Origin: Scapula and clavicle

Insertion: Humerus

Action: Abducts, extends, flexes the arm
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Subscapularis
Arm

Origin: Scapula

Insertion: Humerus

Action: Rotates arm medially
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Infraspinatus
Arm

Origin: Scapula

Insertion: Humerus

Action: Rotates arm laterally
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Teres Minor
Arm

Origin: Scapula

Insertion: Humerus

Action: Rotates arm laterally
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Biceps Brachii
Forearm

Origin: Scapula

Insertion: Radius

Action: Flexion and supination
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Brachialis
Forearm

Origin: Humerus

Insertion: Ulna

Action: Flexion
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Brachioradialis
Forearm

Origin: Humerus

Insertion: Radius

Action: Flexion
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Triceps Brachii
Forearm

Origin: Scapula & Humerus

Insertion: Ulna

Action: Extension
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Flexors
Forearm

Origin: Humerus

Insertion: Carpals, metacarpals, phalanges

Action: Wrist Flexion
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Extensors
Forearm

Origin: Humerus

Insertion: Phalange

Action: Extends fingers
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Gluteus Maximus
Thigh

Origin: Ilium and sacrum

Insertion: Pelvis and femur

Action: Extend the hip (ex. walking up stairs, rising from sitting)
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Gluteus Medius
Thigh

Origin: Ilium

Insertion: Femur

Action: Rotates thigh, abducts the whole thigh
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Adductor brevis
Thigh

Origin: Pubis

Insertion: Femur

Action: Flexion and extension of the hip
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Adductor longus
Thigh

Origin: Pubis

Insertion: Femur

Action: Flexion of hip joint, adduction of thigh
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Adductor magnus
Thigh

Origin: Pubis and Ischium

Insertion: Femur

Action: Thigh flexion, adduction, external rotation
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Gracilis
Thigh

Origin: Pubis

Insertion: Tibia

Action: Adduction and flexion of the thigh
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Biceps femoris
Leg

Origin: Ischium and Femur

Insertion: Fibula and Tibia

Action: Flexes and rotates leg laterally
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Semitendinosus
Leg

Origin: Ischium

Insertion: Tibia

Action: Flexes and rotates leg medially
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Semimembranosus
Leg

Origin: Ischium

Insertion: Tibia

Action: Flexes and rotates leg medially
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Rectus femoris
Leg

Origin: Ilium

Insertion: Patella

Action: Extends leg at knee
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Vastus lateralis
Leg

Origin: Femur

Insertion: Patella

Action: Extends leg at knee
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Vastus medialis
Leg

Origin: Femur

Insertion: Patella

Action: Extends leg at knee
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Vastus intermedius
Leg

Origin: Femur

Insertion: Patella

Action: Extends leg at knee
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Tibialis Anterior
Feet

Origin: Tibia

Insertion: Tarsal & Metacarpal

Action: Dorsiflexion and inversion of foot (running/kicking a ball)
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Extensor Digitorum Longus
Feet

Origin: Tibia/Fibula

Insertion: Phalange

Action: Dorsiflexion and eversion of foot
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Gastrocnemius
Feet

Origin: Femur

Insertion: Calcaneus

Action: Plantar flexion
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Soleus
Feet

Origin: Tibia/Fibula

Insertion: Calcaneus

Action: Plantar flexion
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Plantaris
Feet

Origin: Femur

Insertion: Calcaneus

Action: Plantar flexion
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Tibialis Posterior
Feet

Origin: Tibia/Fibula

Insertion: Tarsal & Metacarpal

Action: Plantar flexion
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External Oblique
Abdominal Wall

Origin: Lower ribs

Insertion: Iliac crest

Action: Tense the ab wall, compress ab contents
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Internal Oblique
Abdominal Wall

Origin: Ilium

Insertion: Lower ribs, pubic bone

Action: Tense the ab wall, compress ab contents
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Transverse Abdominis
Abdominal Wall

Origin: Coastal cartilage, lumbar vertebrae, iliac crest

Insertion: Pubic bone

Action: Tense the ab wall, compress ab contents
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Rectus Abdominis
Abdominal Wall

Origin: Pubic bone, pubic symphisis

Insertion: Sternum, coastal cartilage

Action: Tense the ab wall, compress ab contents, flex vertebral column