Can someone help me with these answers? I am having a tough time. 1. Oxygen and

Question

Can someone help me with these answers? I am having a tough time.

1. Oxygen and carbon dioxide exchange takes place between blood and air in the lungs across the

a. alveoli

b. alveoli, bronchioles

c. alveoli, bronchioles, bronchi

d. alveoli, bronchioles, bronchi, and trachea

2. Gravity can cause a decline in blood pressure

a. True

b. False

3. Changing the subject from a upright to a prone postition caused

a. an increase in tidal volume

b. a decrease in tidal volume

c. no change in tidal volume

4. When you breathe in

a. all the air enters the alveoli

b. only some of the fresh air enters the alveoli - the rest remains in the airways

c. none of the fresh air enters the alveoli - all of it remains in the airways

5. When the subject breathes through the tube (check all that apply)

the airway volume increases

the airway volume decreases

the tidal volume increases

the tidal volume decreases

a. alveoli

b. alveoli, bronchioles

c. alveoli, bronchioles, bronchi

d. alveoli, bronchioles, bronchi, and trachea

Explanation / Answer

Oxygen and carbon dioxide exchange takes place between blood and air in the lungs across the alveoli. Gravity can cause a decline in blood pressure :-True Changing the subject from a upright to a prone position caused a decrease in tidal volume. When you breathe in only some of the fresh air enters the alveoli - the rest remains in the airways. When the subject breathes through the tube the airway volume decreases and the tidal volume increases.

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