Which statement best summarize the relationship between the muscular system and the cardiovascular system? A. The heart is protected from injury by the breastbone. B. Nutrients are carried to the heart through arteries and veins C. Messages are carried by nerves between the brain and the heart. D. The heart contract and expands as it pumps blood through the body And how do I explain that I know the answer???
Chemistry · Middle School · Thu Feb 04 2021
Answered on
D. The heart contracts and expands as it pumps blood through the body.
This statement is the best summary of the relationship between the muscular system and the cardiovascular system because the heart, which is a muscular organ, works by contracting and relaxing to pump blood through the body. The contraction and relaxation of the heart muscle (myocardium) are crucial for maintaining blood circulation, which delivers oxygen and nutrients to the body's tissues and removes carbon dioxide and waste products.