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Complete Guide: Human Muscle Groups and Movements

Explore the comprehensive overview of skeletal muscle groups in the head, neck, upper extremities, torso, and lower body, including descriptions of key muscles and their functions. Learn about various types of movements, such as flexion, extension, abduction, adduction, rotation, supination, and pronation. Enhance your understanding of the human body's muscular system.

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Complete Guide: Human Muscle Groups and Movements

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  1. Skeletal Muscle Groups

  2. Head and Neck • Facial muscles • Orbicularis oculi= circular muscle around the eye • Orbicularis oris= circular muscle around the mouth • Zygomaticus=smiling muscles • Masseter=mastication • Temporal= mastication

  3. Head and Neck • Sternocleidomastoid: flexes head • Trapezius: shrugs shoulders, extends head

  4. Upper Extremities • Pectoralis major: flexes upper arm (chest muscle) • Latissimus Dorsi: extends upper arm (on back) • Deltoid: abducts upper arm • Biceps Brachii: flexes forearm • Triceps Brachii: extends forearm

  5. Trunk/Torso • Abdominals: • Rectus Abdominus (6 pack) • External Oblique (R & L flank) • Internal Oblique • Transverse Abdominus

  6. Respiratory Muscles • Intercostals (between each rib) • Diaphragm

  7. Muscles that move lower extremities • Gluteus Maximus: extends thigh • Adductor Muscles: adducts thighs • Hamstring Muscles: • Semimembraneous • Semitendinosus Flexes Lower Leg • Biceps Femoris

  8. Quadriceps femoris • Extends lower leg • Rectus femoris • Vastus Lateralis • Vastus intermedius • Vastus medialis

  9. Muscles of lower leg • Tibialis anterior: dorsiflexes foot • Gastrocnemius: plantar flexes foot • Peroneus Group: flexes foot

  10. Types of Movements • Flexion: decreases the angle between 2 bones at the joint.. (Bending) • Extension: increases the angle between 2 bones at the joint…(straightening) • Abduction: movement away from the midline • Adduction: Movement toward the midline

  11. Types of Movement Rotation: movement around a longitudinal axis Hand positions that results from rotation of the forearm. Supination Pronation

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