1. What coordinated functions are carried by the respiratory system and
circulatory system?
I. Respiratory system breaks down food into smaller units
II. Respiratory system provides oxygen to the blood and removes gaseous
wastes
III. Circulatory system distributes oxygen and nutrients to the different parts
of the body
IV. Circulatory system provides support and framework

A. I and II C. I and IV
B. III and IV D. II and III

2. What happens to the gases when the blood enters the lungs?
I. Blood leave the lungs
II. Oxygen enters the bloodstream
III. Carbon dioxide leave the bloodstream

A. I only C. III only
B. II only D. II and III

3. Complete the pathway taken by air during inhalation.
Nostrils----Pharynx-----Larynx-----____________-----Bronchioles-----Alveoli

A. artery C. capillary
B. bronchi D. neurons



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