Muscular system

• • Frontalist The frontalis muscle is responsible for raising the eyebrows and wrinkling the skin on the forehead
• • Temporalis The main function of the temporalis muscle is to move the mandible or lower jaw.
• • Occipital The occipitalis muscle functions to move the eyebrows and scalp up and back and wrinkle the forehead.
• • Orbicularis Oculi The orbicularis oculi muscle closes the eyelids and assists in pumping the tears from the eye into the nasolacrimal duct system. 
• •  Orbicularis Oris The function of orbicularis oris is to control the shape and movements of the lips. It closes, protrudes and compresses the lips.
• • Masseter the Masseter supports the arterial structures that move blood through the muscles of the jaw.
• • Buccinator The buccinator muscle plays a role in stabilizing the denture by gripping the polished surface of the denture.
• • Pectoralis Major: The pectoralis major is the large, fan-shaped muscle covering the upper chest. It is responsible for the movement of the shoulder joint, specifically flexion, adduction (bringing the arm toward the body), and medial rotation.
• • Pectoralis Minor:  Located beneath the pectoralis major, the pectoralis minor assists in stabilizing the scapula (shoulder blade) and is involved in movements such as scapular protraction and depression.
• • Serratus Anterior:This muscle runs along the lateral aspect of the rib cage. It helps in scapular protraction (reaching forward) and plays a role in stabilizing the shoulder blades.
• • Sternocleidomastoid: Rotation of the head to the opposite side or obliquely rotate the head. It also flexes the neck. When acting together it flexes the neck and extends the head.
• • Posterior(lateral)Triangle Of Neck: Strap-like muscles in the back of your neck that help you extend and rotate your head.
• • Trapezius: The trapezius is a large muscle that extends from the base of the skull down to the middle of the back. It is involved in various movements, including elevation, depression, retraction, and rotation of the scapula.
• • Our infraspinatus muscle is a thick triangular muscle located at the back of your shoulder. It’s attached to the top of your upper arm bone (humerus) and your shoulder blade (scapula).
• • Teres Minor: Stabilizes the ball-and-socket glenohumeral joint by helping hold the humeral head (ball) into the shallow glenoid cavity of the scapula (socket). 
• • Teres Major: It functions synergistically with the latissimus dorsi to extend, adduct, and internally rotate the humerus.
• • Latissimus Dorsi:  Commonly known as the "lats," the latissimus dorsi is a large muscle that extends from the mid to lower back to the upper arm. It is responsible for shoulder extension, adduction, and medial rotation.
• • Gluteal Aponeurosis: Fascia arises from the posterior and lateral iliac crest and extends distally covering the gluteus medius muscle and inserts on the ITB and the gluteal tuberosity of the femur.
• • Semispinalis Capitis: Include the lateral rotation of the neck, the lateral flexion of the neck, and the extension of the neck, such as when bending the neck backward to look up at the ceiling. The semispinalis capitis also helps to maintain the correct posture of the neck and head region.
• • Splenius Capitis: Assists in supporting the head in the erect position. Acting unilaterally: lateral flexion of the head and neck and rotation the head to the same side (when working synergistically with sternocleidomastoid).
• •  Splenius Cervicis Muscle: To coordinate the position of the head and neck during various body movements, such as standing up from a sitting position. It does so by producing the lateral flexion, rotation and extension of the neck.
• • Levator Scapulae: To elevate the scapula and tilt the glenoid cavity inferiorly by rotating the scapula downward.
• • Rhomboid Major and Rhomboid Minor: These muscles are located between the shoulder blades and help retract the scapula, pulling it toward the spine.
• • Supraspinatus Muscle: To initiate abduction and depress the humeral head against the upward pull of the deltoid.
• • Serratus Anterior Muscle: Is a fan-shaped muscle that originates on the superolateral surfaces of the first to eighth or ninth ribs at the lateral wall of the thorax and inserts along the superior angle, medial border, and inferior angle of the scapula.
• • Erector spinae: The two major functions of the erector spinae muscle group are to extend and laterally flex the spine. These muscles work on different parts of the back to allow for aerobic movements like backbends.
• • Serratus posterior superior and serratus posterior inferior: The main function of these muscles is to facilitate the act of respiration; the serratus posterior superior muscle elevates the ribs, while the serratus posterior inferior muscle depresses the ribs. These actions are particularly important in forced respiration.
• • 12th rub: Its position is important to our posture and muscle balance. It is extremely easy to locate and work with. Many times when the twelfth rib is released the muscles attaching to the twelfth rib will instantly ease.
• • Deltoid: The Deltoid muscle is a large triangular-shaped muscle that lies over the glenohumeral joint and which gives the shoulder its rounded form.
• • Long head of biceps brachii: Stabilize the humeral head in the glenoid during powerful elbow flexion and forearm supination by the main muscle. 
• • Short head of biceps brachii: The short head attaches to a bump on the shoulder blade called the coracoid process.
• • Brachialis:The brachialis provides flexion of the elbow at all physiologic positions and is considered a "pure flexor" of the forearm at the elbow.
• • Brachioradialis:The brachioradialis primarily acts as a flexor of the elbow also to stabilize the forearm during elbow flexion.
• • Pronator teres: Pronation of the forearm or the muscle pulls the radius medially, causing its head to rotate.
• • Flexor carpi radialis:The main function of (FCR) is providing flexion of the wrist and assisting in abduction of the hand and wrist.
• • Flexor carpi ulnaris:The main function of (FCU) It can adduct and flex the wrist at the same time.
• • Lumbricalis:The lumbrical muscles are unique in having their origin and insertion on tendons. The lumbricals assist in metacarpophalangeal joint flexion.
• • Abductor pollicis brevis: The main function of abductor pollicis brevis is the abduction of the thumb at the carpometacarpal joint.
• • Triceps:The triceps brachii is a large, thick muscle on the dorsal part of the upper arm and the primary function of the triceps is the extension of the elbow joint.
• • Extensor carpi radialis longus: Produce wrist extension and abduction in addition extensor carpi radialis longus may help to flex the elbow joint.