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(Epicranius) Frontalis
- Body Region: Face
- Origin: Occipital bone
- Insertion: Skin and muscles around the eye
- Action: Raises eyebrows (surprise)
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(Epicranius) Occipitalis
- Body Region: Face
- Origin: Occipital bone
- Insertion: Skin and muscles around eye
- Action: Raises eyebrows (surprise)
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Orbicularis oculi
- Body Region: Face
- Origin: Maxillary and frontal bones
- Insertion: Skin around eye
- Action: Closes eye (blinking)
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Orbicularis oris
- Body Region: Face
- Origin: Muscles near the mouth
- Insertion: Skin of central lip
- Action: Closes lips (kissing)
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Buccinator
- Body Region: Face
- Origin: Outer surfaces of maxilla and mandible (wall of cheeks)
- Insertion: Orbicularis oris
- Action: Compresses cheeks (blowing)
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Zygomaticus
- Body Region: Face
- Origin: Zygomatic bone
- Insertion: Corner of mouth
- Action: Raises corner of mouth (smiling)
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Platysma
- Body Region: Face
- Origin: Fascia in upper chest
- Insertion: Lower border of mandible
- Action: Draws corner of mouth down (frowning)
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Masseter
- Body Region: Mastication
- Origin: Lower border of zygomatic arch
- Insertion: Lateral surface of mandible
- Action: Elevates mandible
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Temporalis
- Body Region: Mastication
- Origin: Temporal bone
- Insertion: Coronoid process and anterior ramus of mandible
- Action: Elevates mandible
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Medial Pterygoid
- Body Region: Mastication
- Origin: Sphenoid, palatine, and maxillary bones
- Insertion: Medial surface of mandible
- Action: Elevates mandible (closes the jaw) and moves side to side
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Lateral Pterygoid
- Body Region: Mastication
- Origin: Sphenoid bone
- Insertion: Anterior surface of Mandibular condyle
- Action: Depresses and protracts mandible (opens the mouth), moves side to side
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Sternocledomastoid
- Body Region: Neck & Vertebral Column
- Origin: Sternum & clavicle
- Insertion: Temporal
- Action: Flexes head, raises sternum, pulls head to one side (head bends toward the chest)
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Splenius capitis
- Body Region: Neck & Vertebral Column
- Origin: Cervical & thoracic vertebrae
- Insertion: Occipital
- Action: Extends neck, rotates head, bends head to one side (bring head into upright position)
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Semispinalis capitis
- Body Region: Neck & Vertebral Column
- Origin: Cervical & thoracic vertebrae
- Insertion: Occipital
- Action: Extends head, rotates head, bends head to one side
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External oblique
- Body Region: Abdominal Wall
- Origin: Lower ribs
- Insertion: Ilium & linea alba
- Action: Tenses abdominal wall & compresses contents
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Rectus abdominis
- Body Region: Abdominal Wall
- Origin: Pubis
- Insertion: Xiphoid
- Action: Tenses abdominal wall & flexes vertebrae
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Trapezius
- Body Region: Pectoral girdle
- Origin: Occipital bone & vertebrae, thoracic and cervical
- Insertion: Clavicle & scapula
- Action: Rotate, raises & pulls scapula medially, or pull scapula and shoulder downward (with other muscles, can pull the head backward or to one side)
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Rhomboideus major
- Body Region: Pectoral girdle
- Origin: thoracic vertebrae
- Insertion: Scapula
- Action: Raises (elevates) and adducts (retracts) and rotates scapula
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Levator scapulae
- Body Region: Pectoral girdle
- Origin: Cervical vertebrae
- Insertion: Scapula
- Action: Elevates scapula
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Serratus anterior
- Body Region: Pectoral girdle
- Origin: Ribs
- Insertion: Scapula
- Action: Pulls scapula anteriorly & downward
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Pectoralis
minor
- Body Region: Pectoral girdle
- Origin: Ribs
- Insertion: Scapula
- Action: Pulls scapula anteriorly (upward) & downward or raises ribs
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Pectoralis major
- Body Region: Arm
- Origin: Clavicle, sternum & ribs
- Insertion: Humerus
- Action: Flexes, adducts & rotates arm medially
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Teres major
- Body Region: Arm
- Origin: Scapula
- Insertion: Humerus
- Action: Extends, adducts & rotates arm medially
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Teres minor
- Body Region: Arm
- Origin: Scapula
- Insertion: Humerus
- Action: Rotates arm laterally
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Supraspinatus
- Body Region: Arm
- Origin: Scapula
- Insertion: Humerus
- Action: Abducts the arm
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Infraspinatus
- Body Region: Arm
- Origin: Scapula
- Insertion: Humerus
- Action: Rotates arm laterally
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Deltoid
- Body Region: Arm
- Origin: Scapula and clavicle
- Insertion: Humerus
- Action: Abducts, extends & flexes arm
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Biceps brachii
- Body Region: Forearm & Hand
- Origin: Scapula
- Insertion: Radius
- Action: Flexes forearm at elbow and rotates hand laterally
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Brachialis
- Body Region: Forearm & Hand
- Origin: Humerus
- Insertion: Ulna
- Action: Flexes forearm at elbow
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Brachioradialis
- Body Region: Forearm & Hand
- Origin: Humerus
- Insertion: Radius
- Action: Flexes forearm at elbow
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Triceps brachii
- Body Region: Forearm & Hand
- Origin: Scapula & Humerus
- Insertion: Ulna
- Action: Extends forearm at elbow (extends elbow)
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Flexor digitorum superficialis
- Body Region: Forearm & Hand
- Origin: Humerus, radius & ulna
- Insertion: Tendons of fingers
- Action: Flexes fingers & hand (wrist)
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Extensor digitorum
- Body Region: Forearm & Hand
- Origin: Humerus
- Insertion: Phalanges
- Action: Extends fingers
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Gluteus maximums
- Body Region: Leg
- Origin: Sacrum, coccyx & ilium
- Insertion: Femur
- Action: Extends thigh at hip
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Gluteus medius
- Body Region: Leg
- Origin: Ilium
- Insertion: Femur
- Action: Abducts & rotates thigh medially
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Tensor fasciae latae
- Body Region: Leg
- Origin: Ilium
- Insertion: Fascia of thigh
- Action: Abducts, flexes & rotates thigh medially
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Gracilis
- Body Region: Leg
- Origin: Pubis
- Insertion: Tibia
- Action: Adducts thigh & flexes leg at the knee
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Biceps femoris
- Body Region: Leg
- Origin: Femur & ischium
- Insertion: Fibula & tibia
- Action: Flexes & rotates leg laterally, extends thigh
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Semitendinosus
- Body Region: Leg
- Origin: Ischium
- Insertion: Tibia
- Action: Flexes & rotates leg medially, extends thigh
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Semimembranosus
- Body Region: Leg
- Origin: Ischium
- Insertion: Tibia
- Action: Flexes & rotates leg medially, extends thigh
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Sartorius
- Body Region: Leg
- Origin: Ilium
- Insertion: Tibia
- Action: Flexes, abducts & rotates thigh laterally
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Rectus femoris
- Body Region: Leg
- Origin: Ilium
- Insertion: Patella
- Action: Extends leg at knee
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Vastus lateralis
- Body Region: Leg
- Origin: Femur
- Insertion: Patella
- Action: Extends leg at knee
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Vastus medialis
- Body Region: Leg
- Origin: Femur
- Insertion: Patella
- Action: Extends leg at knee
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Gastrocnemius
- Body Region: Foot
- Origin: Femur
- Insertion: Calcaneous
- Action: Plantar flexion & flexion of leg at knee
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Soleus
- Body Region: Foot
- Origin: Fibula & tibia
- Insertion: Calcaneous
- Action: Planter flexion
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Tibialis anterior
- Body Region: Foot
- Origin: Tibia
- Insertion: Tarsals
- Action: Dorsiflexion & inversion of foot
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Fibalaris longus
- Body Region: Foot
- Origin: Fibula & tibia
- Insertion: Tarsals
- Action: Plantar flexion & eversion of foot
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Body Region: Origin:Insertion: Action:
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