Question

1. How do the heart, lungs, and red blood cells work together to give the muscles what they need?

2. What does your body do in order to help you get more oxygen when you're exercising?

3. What do you think happens to athletes (like the Denver Broncos) that train in areas with "thin" air that has less oxygen? What happens to their lungs, hearts, and red blood cells over time?​

Answer 1

Step-by-step explanation:

One

The heart is like a functioning pump. It moves the blood around the body.

The red blood cells carry oxygen which is delivered to the vital organs of the body. Muscles need oxygen to function properly.

The lungs are like a giant sieve. They separate the oxygen and carbon dioxide.

Two

One of the things the body does is increase your heart rate while exercising. That means that the body receives more oxygen from the seive action of the lungs. In other words, your heart rate increases and red cell blood flow consequently increases.

Three

Interesting application. The heart rate will have to increase to get the same amount of oxygen as the heart rate would be at lower altitutes. There is less oxygen in the thin air in Denver Colorado than say Los Angeles California.