Question

1. label the drawing below and explain how oxygen enters the bloodstream and carbon dioxide exits the body. (be sure to include the following terms in your explanation - alveoli, capillary, diffusion, oxygen (o₂), carbon dioxide (co₂)). bolded terms will be used in the diagram

angelicas doctor has diagnosed her with pneumonia, a lung infection that causes the air sacs (alveoli) in the lungs to become inflamed, filling with fluid or pus, and is often accompanied by symptoms like a cough, fever, and difficulty breathing. he decides to keep her at the hospital for a few days. angelica is given antibiotics to fight the infection. she also uses oxygen therapy (through a mask) to bring her oxygen levels back up while her lungs heal.

table 2

Explanation:

Oxygen enters the bloodstream and carbon dioxide exits the body through a process called gas exchange in the alveoli. Alveoli are tiny air - sacs in the lungs. When we breathe in, oxygen (\(O_2\)) enters the alveoli. The alveoli are surrounded by capillaries (tiny blood vessels). Because there is a higher concentration of oxygen in the alveoli than in the blood in the capillaries, oxygen diffuses (moves from an area of high concentration to an area of low concentration) across the thin walls of the alveoli and capillaries into the bloodstream.

At the same time, carbon dioxide (\(CO_2\)) is a waste product in the blood. There is a higher concentration of carbon dioxide in the blood than in the alveoli. So, carbon dioxide diffuses from the blood in the capillaries across the alveolar and capillary walls into the alveoli. Then, when we breathe out, the carbon dioxide is expelled from the body.

Answer:

Oxygen (\(O_2\)) enters the bloodstream and carbon dioxide (\(CO_2\)) exits the body through gas exchange in the alveoli. Oxygen diffuses from the alveoli (where its concentration is high) into the capillaries (where its concentration is low) and then into the bloodstream. Carbon dioxide diffuses from the blood in the capillaries (where its concentration is high) into the alveoli (where its concentration is low) and is then exhaled.