| Term | Definition |
| Latissimus Dorsi | Flat, triangular; covers the lumbar (lower back) region and lower half of the thoracic region. Aids in swinging of the arms |
| Deltoid | Triangle-shaped; covers the shoulder and lifts the arm or turns it |
| Flexor | Mid-forearm, on the inside of the arm. Bends wrist and closes the fingers |
| Peroneus Brevis | Originates in the lower third of the fibula and bends the foot down and out |
| Risorius | Corner of the mouth. Draws the mouth up and out, as in grinning |
| Corrugator | Between the eyebrows controls the eyebrows drawing them in and downward |
| Extensor Digitorum Longus | Outside of the lower leg and bends the foot up and extends the toes |
| Quadratus Labii Superioris | Consists of 3 parts located above the upper lip. Raises both the nostrils and the upper lip as in expressing distaste |
| Peroneus Longus | Originates in the upper two-thirds of the outer fibula and causes the foot to invert and turn outward |
| Quadratus Labii Inferioris | Below the lower lip. Pulls the lower lip down or to the side, as in expressing sarcasm |
| Inferioris | Located below or is smaller |
| Adductor | stretches over fingers and draws the fingers together |
| Gastrocnemius | Back of the leg attached to the lower rear surface of the heel and pulls the foot down |
| Auricularis Anterior | In front of the ear |
| Extensor | Mid-forearm, on the outside of the arm. Straightens the fingers and wrist |
| Procerus | between the eyebrows Across the bridge of the nose and draws brows down wrinkles the area across the bridge of the nose |
| Frontalis Muscle | Do it muscle that extends from the forehead to the Top of the skull it raises eyebrows or draws the scalp forward |
| Abductor | Stretches over fingers and separates the fingers |
| Flexor Digitorum Brevis | Across the ball of the foot between the toes and flexes the toes |
| Bicep | Primary muscle in the front of the upper arm. Raises the forearm, bends the elbow and turns the palm of the hand down |
| Occipitalis Muscle | At the nape of the neck. Draws the scalp back |
| Flexor Digiti Minimi Brevis | Along the base of the small toe and flexes the joint of the small toe |
| Platysma | Extends from the tip of the chin to the shoulder and chest. Draws the lower lip and corner of the mouth sideways and down, partially opening the mouth, as in surprise or fright |
| Aponeurosis | a tendon that connects the frontalis and the occipitalis muscles in the epicranium |
| Abductor Digiti Minimi | Runs along the outside border of the foot and connects to the heel and moves the smallest toe away from the other toes |
| Abductor Hallucis | Runs along the interior border of the foot and moves the big toe away from the other toes |
| Serratus Anterior | Under the arm. Helps in lifting the arm and in breathing |
| Epicranium | Consists of all the structures above the cranium including muscle skin |
| Orbicularis Oculi | Circles the eye socket and closes the eyelid |
| Belly | The term applied to the mid-section of the muscle between the two attached sections |
| Opponens | Causes the thumb to move toward the fingers giving the ability to grasp or make a fist |
| Auricularis Superior | above the ear |
| Depressor | draws down or depresses |
| Sternocleidomastoideus | Extends along the side of the neck from the ear to the collarbone. Causes the head to move from side to side and up and down, as in nodding yes or no. |
| Levator Palpebrae Superioris | Above the eyelids raises the eyelid |
| Triangularis | Below the corners of the mouth. Draws the corners of the mouth down as in expressing sadness |
| Temporalis | Above and in front of the ear. Opening and closing the jaw, as in chewing (mastication) |
| Origin | Non-moving fixed portion of the muscle attached to bones or other fixed muscles |
| Occipitofrontalis | Broad muscle formed by two muscles joined by the aponeurosis tendon |
| Tricep | Extends the length of the upper arm to the forearm. Controls forward movement of the forearm |
| Trapezius | Flat, triangular; cover the upper and back part of the neck and shoulders. Aids in drawing the head back and elevating the shoulder blades |
| Striated Muscle | Muscles that respond to commands regulated by will |
| Posterior | Behind or in back of |
| Mentalis | Tip of the chin. Pushes lower lip up and/or wrinkles the chin, as in expressing doubt |
| Zygomaticus | Major and minor; outside the corners of the mouth. Draws he mouth up and back, as in laughing |
| Insertion | The portion of the muscle joint to movable attachments bones movable muscles or skin |
| Superioris | located above or is larger |
| Myology | The study of structure function and diseases of the muscles |
| Auricularis Posterior | behind the ear |
| Epicranius | broad muscle covering the scalp |
| Non-Striated Muscle | Muscles that respond automatically to control various body functions including the functions of internal organs |
| Orbicularis Oris | Circles the mouth. Contract, puckers and wrinkles the lips in kissing or whistling |
| Soleus | Originates in the upper portion of the fibula from just below the knee to the heel and bends the foot down |
| Buccinator | Between the jaws and cheek. Compressing the cheek to release air outwardly as in blowing |
| Extensor Hallucis Longus | Between the tibialis interior and extensor digitorum longus. Extends the big toe and flexes the foot |
| Dilator | Opens enlarges or expands |
| Caninus | Above the corners of the mouth. Raises the angle of the mouth, as in snarling |
| Pronator | Runs across the front of the lower part of the radius and the ulna. Turns the palm of the hand downward and inward |
| Anterior | In front of |
| Levator | Lifts up |
| Tibialis Anterior | Covers the front of the shin and bends the foot upward & inward |
| Supinator | Runs parallel to the ulna. Turns the palm of the hand up. |
| Pectoralis Major and Minor | Extend across the front of the chest and assist in swinging the arms |
| Masseter | Covers the hinge of the jaw. Aids in closing the jaw, as in chewing (mastication) |
