Use a mirror to frown or wrinkle your forehead to observe the epicranius muscle . Observe the orbicularis oculi (closes the eye) and orbicularis oris (closes the mouth). 2. Muscles of the Neck
Locate this muscle on the front surface of the neck. Use a mirror to frown or wrinkle your
Locate the sartorius muscle (the longest in the body), quadriceps (extensor of the leg), and gastrocnemius (on the back of the lower leg, used for walking and standing on toes). Summary Table: Muscle Functions Muscle Group Example Muscle Primary Function Head (Masticatory) Temporal, Masseter Raising the lower jaw Head (Mimic) Orbicularis oculi/oris Closing eyes and mouth; facial expressions Neck Sternocleidomastoid Tilting and rotating the head Trunk Pectoralis major, Abdominals Arm movement; torso rotation and stability Limbs Biceps, Triceps Flexing and extending the arm Muscles of the Neck Locate this muscle on
This laboratory work, based on the , focuses on identifying the location and functions of major muscle groups in the human body through observation and simple physical exercises. Laboratory Work: Muscles of the Human Body Laboratory Work: Muscles of the Human Body Conclusion:
Conclusion: These muscles act as because they work together to perform the same movement (closing the mouth).