There are hundreds of skeletal muscles in the human body from the head up to the legs down back and front.

A. The Muscles of the head Scalp/Eyelid muscles Raises the eyebrows, wrinkles eyebrow, closes eyelids, wrinkles forehead, depression of eyebrow. Extraocular muscles Retracts//elevates eyelid, raise the upper eyelid, elevates, adducts, and rotates medially the eye, depression and adduction, adducts the eyeball, depress the eyeball, extorsion, elevation, abduction. Intraocular muscles Accommodation, pupil dilation, constricts pupil. Ear muscles Wiggle ears; control the amplitude of sound waves to the inner ear, tensing the tympanic membrane Nose muscles Draws down the medial angle of the eyebrow giving expressions of frowning, Compresses Bridge, depresses tip of nose, elevates corners of nostrils. Buccal branch of the facial nerve, Depression of nasal septum, dilates the nostril; elevates the upper lip and wing of the nose. Mouth muscles Smile (elevates angle of mouth), depresses angle of mouth, Elevates the upper lip, depress the lower lip. Draws angle of mouth upward and laterally, elevates and wrinkles skin of chin, protrudes lower lip, compress the cheeks against the teeth (blowing), mastication, pucker the lips, draw back angle of mouth Mastication muscles elevation (as in closing of the mouth) and retraction of mandible, elevation and retraction of mandible, depresses mandible, elevates mandible, closes jaw, helps lateral pterygoids in moving the jaw from side to side Tongue muscles Complex - Inferior fibers protrude the tongue, middle fibers depress the tongue, and their superior fiber draw the tip back and down, depresses tongue, elevates and retracts tongue Soft palate muscles Elevates soft palate, tension of the soft palate, raising the back part of the tongue, pulls pharynx and larynx Pharynx muscles Swallowing, elevate the larynx, elevate the pharynx, raise the nasopharynx Larynx muscles Tension and elongation of the vocal folds (has minor adductory effect), approximate the arytenoid cartilages, thickens the vocal folds and decreases length; also helps helps to adduct the vocal folds during speech

B. The Muscles of the neck Cervical muscles Draws the corners of the mouth inferiorly and widens it (as in expressions of sadness and fright). Also draws the skin of the neck superiorly when teeth are clenched Acting alone tilts head to its own side and rotates it so the face is turned towards the opposite side. Acting together, flexes the neck, raises the sternum and assists in forced inspiration Suprahyoid muscles Open the jaw when the masseter and the temporalis are relaxed. Elevate the hyoid during swallowing Raises oral cavity floor, elevates hyoid, depresses mandible Carry hyoid bone and the tongue upward during deglutition Infrahyoid/Strap muscles Depress hyoid bone, Elevates larynx, may slightly depress hyoid bone, depress hyoid bone, Depresses the larynx and hyoid bone. Carries hyoid bone backward and to the side Vertebral muscles Flexes the neck and head, Elevate 1st rib, rotate the neck to the opposite side Elevate 2nd rib; tilt the neck to the same side

C. The Muscles of torso Back muscles Extend, rotate, and laterally flex the head, pulls the forelimb dorsally and caudally, Extend the head, Stabilizes vertebrae in local movements of vertebral column Suboccipital muscles Extends the head at the neck, but is now considered to be more of a sensory organ than a muscle Chest muscles Hold ribs steady, depresses ribs, Assists in elevation of the thoracic rib cage Abdomen muscles Rotates torso, Compresses abdomen and rotates vertebral column. Pelvis muscles Supports the viscera in pelvic cavity, controls urine flow and contracts during orgasm, inhibit defecation, closing in the back part of the outlet of the pelvis Perineum muscles Keep the anal canal and anus closed, aids in the expulsion of the feces

D. The Muscles of upper limbs Vertebral column muscles Descending and ascending parts act together to rotate glenoid cavity superiorly, pulls the forelimb dorsally and caudally, retracts the scapula and rotates it to depress the glenoid cavity. Fix the scapula to the thoracic wall. Thoracic walls muscles Flexes the humerus, extends the humerus. As a whole, adducts and medially rotates the humerus. It also draws the scapula anteriorly and inferiorly. Stabilizes the scapula by drawing it inferiorly and anteriorly against the thoracic wall Shoulder muscles Shoulder abduction, flexion and extension Arm muscles Flexes & adducts humerus, flexes elbow and supinates forearm, flexion at elbow joint, extends forearm, caput longum adducts shoulder Forearm muscles Pronation of forearm, flexes elbow, flexion and abduction at wrist, wrist flexor, pronates the forearm, flex hand, interphalangeal joints, Flexion of the thumb, Flexion of forearm, extension of hand and fingers, abduction, extension of thumb, extends index finger, wrist Hand muscles Opposition of the thumb, Flexion of thumb, Abduction of thumb E. The Muscles of lower limb lliac region muscles Flexion of hip (psoas major/minor, iliacus), spine rotation (psoas major/minor) Buttocks muscles External rotation and extension of the hip joint, supports the extended knee through the iliotibial tract, chief antigravity muscle in sitting Thigh muscles Flexion, lateral rotation and abduction of thigh; flexion and medial rotation of leg Leg muscles dorsiflex and invert the foot, Extends the big toe and assists in dorsiflexion of the foot at the ankle. Also is a weak invertor, plantarflexion, flexion of knee Foot muscles Flexor digitorum longus, Flexor digitorum brevis, flexes lateral four toes, abduct toes