Laboratornaia Rabota Myshtsy Chelovecheskogo Tela 8 Klass Kolesov Apr 2026

Identify the deltoid (raises the arm), biceps (flexor of the arm at the elbow), and triceps (extensor).

Conclusion: These muscles act as because they work together to perform the same movement (closing the mouth). Identify the deltoid (raises the arm), biceps (flexor

Observation: When turning the head, the left and right muscles act as . However, when they contract simultaneously, they act as synergists to pull the head forward or downward. 3. Muscles of the Trunk Identify the deltoid (raises the arm)

Locate this muscle on the front surface of the neck. when they contract simultaneously

Human skeletal muscles are organized into groups that often work in pairs (antagonists) or together (synergists) to provide a wide range of motion and maintain body posture.