What are the functions of the circulatory system?
blood is transported through the blood vessels delivering nutrients and oxygen to all body cells.
What are the functions of the respitory system?
group of organs that takes in oxygen from air then transfers the oxygen to the blood and all body cells. removes waste
How to the lungs asnd heart work together to provide oxygen to cells?
the heart works as a pump allowing air into the lungs and releasing waste from the body.
What are the major organs of the respitory system?
mouth, nostrils, pharynx, larnynx, traachea, bronchi, lungs, avelov, diagphram.
What are the functions of arteries and veins?
arteries are blood vessels that carry blood away from heart and veins carry blood to the heart.
What is the purpose of valves in veins and in the heart?
valves keep the blood flowing in one direction so as not to go backwords .
what is systemic circulation?
largest part of circulatory system where oxygen where oxygen rich blood to the organs and body tissue, except the heart and lungs
what is the role of hemoglobin?
hemoglobinin real blood cells carry oxygenfrom lungs to body cells and carries some carbon dioxide from body cells back to lungs.
whay is blood leaving the body bright red and blood entering the the lungs is dark red?
bright red oxygen is rich in oxygen when leaving the lungs, and dark red blood contains carbon dioxide and is oxygen deprived