Human Systems PDF

What is the main function of the circulatory system? The circulatory system transports oxygen, nutrients, and waste products throughout the body. What are the three main parts of the circulatory system? The three main parts are the heart, blood vessels, and blood. What is the role of the...

What is the main function of the circulatory system? The circulatory system transports oxygen, nutrients, and waste products throughout the body. What are the three main parts of the circulatory system? The three main parts are the heart, blood vessels, and blood. What is the role of the heart in the circulatory system? The heart pumps blood to circulate it throughout the body. What are the two types of blood vessels and their functions? Arteries carry oxygen-rich blood away from the heart to the body, while veins carry oxygen-poor blood back to the heart. What is the function of red blood cells? Red blood cells carry oxygen from the lungs to the rest of the body and bring carbon dioxide back to the lungs. What is the role of white blood cells? White blood cells help fight infections and protect the body from diseases. What is the function of platelets? Platelets help in blood clotting to prevent excessive bleeding. What is the respiratory system responsible for? The respiratory system is responsible for breathing and gas exchange, taking in oxygen and expelling carbon dioxide. What are the main organs of the respiratory system? The main organs are the lungs, trachea, and diaphragm. How does the digestive system work?