Which is not part of the muscular system? a. heart muscle b. biceps c. deltoid d. liver Which of these activities is not related to the muscular system? a. the secretion of hormones from glands b. running up a hill. c. lifting a heavy box up on the table. d. the mechanical grinding of the stomach as it digests food.
Cardio and smooth muscle types are involuntary. Skeletal muscle types are? A. mandatory B. voluntary C. volunteerism D. necssary