the cardio-respiratory system

the lungs:

the purpose of the lungs are for respiration and expelling carbon dioxide

the lungs are in the thorax

alveolis are little air sacs in the lungs

alveolis are surrounded by capillaries

gas exchange occurs at capillaries

oxygen diffuses out of the alveoli into the blood and carbon dioxide reverse to be breathed out

the heart:

the circulatory system's function is:

-getting nutrients/oxygen to every cell in body

-controlling body temperature

-blood clotting

the circulatory's system includes the heart,blood vessels and blood

has 2 circuits

the blood's route:

1. deoxygenated blood from the body go through the vena cava into the right atrium

2. the blood flows through the tricuspid valve into the right ventricle

3. the blood flows from the right ventricle and through the pulmonary artery to the lungs

4. oxygenated blood from the lungs go through the…