Lungs contain millions of _____. alveoli - villi - projections - capillaries

What process is made possible by the arrangement of capillaries surrounding alveoli?

What role does blood have in breathing?

How do animals breathe?

Which of the parts of the circulatory system brings blood from a part of the body to the heart? arteriesa - capillaries - arterioles - veins

Oxygen moves between the respiratory system and the circulatory system when it transfers from ____ to _____. alveoli, capillaries bronchi, trachea capillaries, veins bronchi, capillaries

What role does the trachea play in respiration?

During gas exchange, oxygen moves into the blood, and carbon dioxide moves into the alveoli. (True/False)

Where are the alveoli located in the respiratory system?

Describe the function of a diaphragm?

Name the three main types of blood vessels

Which of the following is NOT part of the respiratory system? pharynx - ventricle - trachea - bronchus