ical cal d 1. List four functions of the muscular system. 2. Muscles always __ and never __

1. Four functions of the muscular system are: - **Movement**: Muscles are responsible for all voluntary and involuntary movements in the body, including walking, running, and even the beating of the heart. - **Posture Maintenance**: Muscles help maintain posture by stabilizing joints and holding the body in position. - **Heat Production**: Muscle activity generates heat as a byproduct, which helps to maintain body temperature. - **Joint Stabilization**: Muscles help stabilize joints, providing support and preventing dislocations.2. Muscles always **pull** and never **push**.