Answer the following questions about circulation of baby after birth.
1. how are gases exchanged?
2. how are wastes removed?
3. how does blood flow through the heart and lungs?
4. what main structures are involved?

1. Gases are exchanged inside the lungs through the surfaces of thousands of alveoli to allow the diffusion of carbon dioxide and oxygen
2. Wastes are removed through the excretory system after passing through either the kidneys urine or the digestive tract feces
3.Blood is redirected after a change in blood pressure after birth. Blood now flows through the pulmonary artery to the lungs to receive oxygen
4. The lungs alveoli, the intestines, the pulmonary artery, and the excretory system
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