Select your answer:
Topics:
Year 7 Nutrition Careers in Health Care Enzymes Vascular Surgery Body Fluids CNA Introduction Blood Groups Infection Control Skeletal Muscle Anatomy Hazards & Risks Weight Management Orthopedics Brain and Nervous System Gaseous Exchange in Humans The Digestive SystemOther quiz:
Anatomy & Physiology › View40 to 50 percent of the body’s weight is contributed by ____.
A. bones
B. water
C. muscles
D. blood
Respiration, Immune System, Blood Cells › View
Why is the left wall of the heart have a thicker layer of muscle than the right side?
A. To stop the blood flowing backwards
B. To push the blood with more force at high pressure so it goes to all body cells.
C. To push the blood at high pressure to the lungs.