What is the scientific name for the windpipe?
Where does gas exchange happen in the lungs?
What are the alveoli attached to?
Inhalation occurs when the diaphragm contracts and flattens while external intercostals contract and raise the ribs up and out
Exhalation occurs when the diaphragm relaxes and moves up while internal intercostals contract and pull the ribs down and in
What does the trachea divide into?
Diffusion occurs when molecules move from an area of low concentration to an area of high concentration
Blood that has been delivered to the lungs via the pulmonary artery is:
High in oxygen and carbon dioxide
High in oxygen and low in carbon dioxide
Low in oxygen and carbon dioxide
Low in oxygen and high in carbon dioxide
Blood that has been delivered to the muscles via the aorta is:
Blood that has left the muscles and is making its way to the heart via the superior vena cava is: